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	SECTION 07540
	PVC THERMOPLASTIC SINGLE-PLY ROOFING
	Copyright 2004 - 2013 ARCAT, Inc. - All rights reserved
	** NOTE TO SPECIFIER ** GAFMC Materials Corporation; conventional built-up roofing (BUR) Modified bitumen roofing, GAFMC CompositeRoof and single-ply roofing. . This section is based on the products of GAF Materials Corporation, which is located at:
	1361 Alps Rd. Wayne, NJ 07470 Toll Free Tel: (800) ROOF-411 Tel: (973)628-3000 Fax: (973)628-3451 Email: cfontenot@gaf.com Web: http:// www.gaf.com [ Click Here ] for additional information.
	Founded in 1886, GAFMC Materials Corporation is one of the oldest manufacturers of commercial and residential roofing materials in the United States, and its proud tradition of innovation and excellence has made it one of the most respected. GAFMC Materials Corporation offers the most comprehensive line of quality roofing systems in the industry. Whether your design calls for an asphalt fiberglass shingle, a conventional built-up roof, modified bitumen, single-ply or composite system, GAFMC's superior products and roofing specifications will meet your needs for a complete single source installation. Today, GAFMC Materials Corporation employs over 3,300 people in 26 plants throughout the United States, and GAFMC products are available across the country and through select distribution centers worldwide. GAFMC Materials Corporation manufactures and supplies a complete line of products for single-ply roofing systems most commonly used in commercial applications: Thermoplastic Polyolefin (TPO), Poly Vinyl Chloride (PVC), and Ethylene Propylene Diene Monomer (EPDM).Each system offers specific advantages in terms of economy, strength, construction, fire resistance and overall durability.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Delete items below not required for project.
		A.	Poly Vinyl Chloride Roofing Membrane.
		B.	Roof Insulation.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
		A.	Section 06100: Rough Carpentry: Roof blocking installation and requirements.
		B.	Section 07620: Sheet Metal Flashing and Trim: Metal flashing and counter flashing installation and requirements.
		C.	Section 15430: Plumbing Specialties: roof drains, scuppers, gutters and downspout installation and requirements.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
		A.	Factory Mutual (FM Global) - Approval Guide.
			1.	Factory Mutual Standard 4470 - Approval Standard for Class 1 Roof Covers.
		B.	Underwriters Laboratories (UL) - Roofing Systems and Materials Guide (TGFU R1306).
		C.	American Society for Testing and Materials (ASTM) - Annual Book of ASTM Standards.
			1.	ASTM C 208 - Standard Specification for Cellulosic Fiber Insulating Board.
			2.	ASTM C 578 - Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation.
			3.	ASTM C 728 - Standard Specification for Perlite Thermal Insulation Board.
			4.	ASTM C 1289 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board.
			5.	ASTM D 41 - Standard Specification for Asphalt Primer Used in Roofing, Dampproofing, and Waterproofing.
			6.	ASTM D 312 - Standard Specification for Asphalt Used in Roofing.
			7.	ASTM D 1079 - Standard Terminology Relating to Roofing, Waterproofing, and Bituminous Materials.
			8.	ASTM D 4263 - Standard Test Method for Indicating Moisture in Concrete by the Plastic Sheet Method.
			9.	ASTM D 4434 - Standard Specification for Poly(Vinyl Chloride) Sheet Roofing.
			10.	ASTM C-1549 - Standard Test Method for Determination of Solar Reflectance Near Ambient Temperature Using a Portable Solar Reflectometer
			11.	ASTM C-1371 - Standard Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable Emissometers
	** NOTE TO SPECIFIER ** The next paragraph is for ENERGYSTAR Rated Systems only. Delete if not required.
			12.	ASTM E 903 – Standard Test Method for Solar Absorptance, Reflectance, and Transmission of Materials Using Integrating Spheres
		D.	Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA)
		E.	National Roofing Contractors Association (NRCA).
		F.	American Society of Civil Engineers (ASCE).
			1.	ASCE 7 - Minimum Design Loads for Buildings and Other Structures.
		G.	Underwriters Laboratories (UL) - Roofing Systems and Materials Guide (TGFU R1306)
		H.	California Title 24 Energy Efficient Standards
		I.	ENERGY STAR
		J.	Cool Roof Rating Council (CRRC)
		K.	Miami Dade County
	1.4	DEFINITIONS
		A.	Roofing Terminology: Refer to ASTM D1079 and the glossary of the National Roofing Contractors Association (NRCA) Roofing and Waterproofing Manual for definitions of roofing terms related to this section.
	1.5	LEED CERTIFICATION
		A.	Provide a roofing system that will achieve or aid in the qualification of points satisfying
			1.	Sustainable Site credit 7.2 - Heat Island Effect - Roof.
			2.	Materials & Resource credit 3 - Material Reuse
			3.	Materials & Resource credit 4 - Recycled Content.
			4.	Materials & Resource credit 5 - Local and Regional Materials.
	1.6	PERFORMANCE REQUIREMENTS
		A.	Provide an installed roofing membrane and base flashing system that does not permit the passage of water, and will withstand the design pressures calculated in accordance with the most current revision of ASCE 7.
		B.	GAFMC shall provide all primary roofing materials that are physically and chemically compatible when installed in accordance with manufacturers current application requirements.
	1.7	SUBMITTALS
		A.	Submit under provisions of Section 01300.
		B.	[ Product Data ]: Provide [ Product Data ] sheets for each type of product indicated in this section.
		C.	Shop Drawings: Provide manufacturers standard details and approved shop drawings for the roof system specified.
		D.	Samples: Provide samples of insulations, fasteners, membrane materials and accessories for verification of quality.
	1.8	QUALITY ASSURANCE
		A.	Manufacturer Qualifications: GAFMC shall provide a roofing system that meets or exceeds all criteria listed in this section.
		B.	Installer Minimum Qualifications:
	** NOTE TO SPECIFIER ** Delete installer classification not required.
			1.	Installer shall be classified as a Master Select contractor as defined and certified by GAFMC.
			2.	Installer shall be classified as a Master contractor as defined and certified by GAFMC.
			3.	Installer shall be classified as an Approved contractor as defined and certified by GAFMC.
		C.	Source Limitations: Components listed shall be provided by a single manufacturer or approved by the primary roofing manufacturer.
	** NOTE TO SPECIFIER ** Only Diamond Pledge system. Delete if not required.
		D.	Final Inspection: Manufacturer's representative shall provide a comprehensive final inspection after completion of the roof system. All application errors shall be addressed and final punch list completed.
	1.9	PRE-INSTALLATION CONFERENCE
		A.	Prior to scheduled commencement of the roofing installation and associated work, conduct a meeting at the project site with the installer, architect, owner, GAFMC representative and any other persons directly involved with the performance of the work. The installer shall record conference discussions to include decisions, agreements, and open issues and furnish copies of recorded discussions to each attending party. The primary purpose of the meeting is to review foreseeable methods and procedures related to roofing work.
	1.10	REGULATORY REQUIREMENTS
		A.	Work shall be performed in a safe, professional manner, conforming to federal, state and local codes.
		B.	Exterior Fire Test Exposure: Provide a roofing system achieving a UL Class rating for roof slopes indicated.
	** NOTE TO SPECIFIER ** Delete roof class rating not required.
			1.	UL Class A rating.
			2.	UL Class B rating.
			3.	UL Class C rating.
		C.	Windstorm Classification: Provide a roofing system which will achieve the following Factory Mutual wind uplift rating, as listed in the current FM Approval Guide.
	** NOTE TO SPECIFIER ** Delete roof wind uplift rating not required.
			1.	Factory Mutual 1-60.
			2.	Factory Mutual 1-75.
			3.	Factory Mutual 1-90.
			4.	Factory Mutual 1-120
			5.	Factory Mutual 1-135
			6.	Factory Mutual 1-150
	1.11	DELIVERY, STORAGE, AND HANDLING
		A.	Deliver roofing materials to the site in original containers, with factory seals intact. Products must carry either a GAF or GAFMC label.
		B.	Store pail goods in their original undamaged containers in a clean, dry location within their specified temperature range.
		C.	Do not expose materials to moisture in any form before, during, or after delivery to the site. Reject delivery of materials that show evidence of contact with moisture.
		D.	Remove manufacturer supplied plastic covers from materials provided with such. Use "breathable" type covers such as canvas tarpaulins to allow venting and protection from weather and moisture. Cover and protect materials at the end of each work day. Do not remove any protective tarpaulins until immediately before the material will be installed.
		E.	Materials shall be stored above 55 degrees F (12.6 degrees C) a minimum of 24 hours prior to application.
		F.	Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
	1.12	PROJECT CONDITIONS
		A.	Weather:
			1.	Proceed with roofing only when existing and forecasted weather conditions permit.
			2.	Ambient temperatures shall be above 45 degrees F (7.2 degrees C) when applying hot asphalt or water based adhesives.
	1.13	WARRANTY
	** NOTE TO SPECIFIER ** Delete warranty not required.
		A.	Provide manufacturer's standard WeatherStopper Diamond Pledge Guarantee with single source coverage and no monetary limitation where the manufacturer agrees to repair or replace components in the roofing system, which cause a leak due to a failure in materials or workmanship.
	** NOTE TO SPECIFIER ** Delete warranty years not required.
			1.	Duration: Five (5) years from the date of completion.
			2.	Duration: Ten (10) years from the date of completion.
			3.	Duration: Fifteen (15) years from the date of completion.
			4.	Duration: Twenty (20) years from the date of completion.
		B.	Provide manufacturer's standard WeatherStopper Diamond Pledge Guarantee with single source Edge to Edge coverage and no monetary limitation where the manufacturer agrees to repair or replace components in the roofing system, which cause a leak due to a failure in materials or workmanship.
	** NOTE TO SPECIFIER ** Delete warranty years not required.
			1.	Duration: Five (5) years from the date of completion.
			2.	Duration: Ten (10) years from the date of completion.
			3.	Duration: Fifteen (15) years from the date of completion.
			4.	Duration: Twenty (20) years from the date of completion.
	** NOTE TO SPECIFIER ** Retain the next paragraph only if a Diamond Pledge Warranty is specified.
		C.	WELL ROOF Advantage. Provides single source coverage* and no monetary limitation, where the manufacturer agrees to repair or replace components in the roofing system, which cause a leak due to a failure in materials or workmanship.
	** NOTE TO SPECIFIER ** Delete warranty years not required.
			1.	Duration: Five (5) years from the date of completion.
			2.	Duration: Ten (10) years from the date of completion.
			3.	Duration: Twelve (12) years from the date of completion.
			4.	Duration: Fifteen (15) years from the date of completion.
			5.	Duration: Twenty (20) years from the date of completion.
			6.	Duration: Twenty-Five (25) years from the date of completion.
			7.	Extension: GAFMC also guarantees to the original or first subsequent owner that coverage shall be extended by 25% of the original guarantee length, provided that the roof in inspected and maintained in accordance with the MAINTAINENCE section of this specification.
		D.	Provide manufacturer's standard WeatherStopper System Pledge Guarantee with single source coverage and a monetary limitation of one (1) dollar per square foot where the manufacturer agrees to repair or replace components in the roof system, which cause a leak due to failure in materials or workmanship
	** NOTE TO SPECIFIER ** Delete warranty years not required.
			1.	Duration: Five (5) years from the date of completion.
			2.	Duration: Ten (10) years from the date of completion.
			3.	Duration: Fifteen (15) years from the date of completion.
			4.	Duration: Twenty (20) years from the date of completion.
		E.	Provide manufacturer's standard WeatherStopper Integrated Roofing System Guarantee where the manufacturer agrees to repair or replace the portion of the roofing materials, which have resulted in a leak due to a manufacturing defect or defects caused by ordinary wear and tear.
	** NOTE TO SPECIFIER ** Delete warranty years not required.
			1.	Duration: Five (5) years from the date of completion.
			2.	Duration: Ten (10) years from the date of completion.
			3.	Duration: Fifteen (15) years from the date of completion.
			4.	Duration: Twenty (20) years from the date of completion.
		F.	Provide manufacturer's standard prorated material warranty where the manufacturer agrees to repair or replace to portion of the roofing materials that have resulted in a leak due to a manufacturing defect or defects caused by ordinary wear and tear.
	** NOTE TO SPECIFIER ** Verify warranty term with manufacturer.
			1.	Duration:
	PART 2	PRODUCTS
	2.1	MANUFACTURERS
		A.	Acceptable Manufacturer: GAF Materials Corporation, Commercial Roofing Products Division, which is located at: 1361 Alps Rd. ; Wayne, NJ 07470; Toll Free Tel: 800-ROOF-411; Tel: 973-628-3000; Fax: 973-628-3451; Email: cfontenot@gaf.com; Web: www.gaf.com
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
		B.	Substitutions: Not permitted.
		C.	Requests for substitutions will be considered in accordance with provisions of Section 01600.
	** NOTE TO SPECIFIER ** Delete insulation if not required.
	2.2	INSULATION
	** NOTE TO SPECIFIER ** Delete insulation types not required.
		A.	Rigid polyisocyanurate board, with a strong white or black fibrous glass facer conforming to or exceeding the requirements of ASTM C 1289 / FS HH-I-1972, EnergyGuard Polyiso, with the following characteristics:
	** NOTE TO SPECIFIER ** Provide project specific information.
			1.	Board Thickness: ______
			2.	Thermal Resistance (LTTR value): ______
		B.	Rigid tapered polyisocyanurate board, with a strong white or black fibrous glass facer conforming to or exceeding the requirements of ASTM C 1289 / FS HH-I-1972, EnergyGuard Tapered Polyiso, with the following characteristics:
	** NOTE TO SPECIFIER ** Provide project specific information.
			1.	Board Thickness: ______
			2.	Thermal Resistance (LTTR value): ______
		C.	Rigid polyisocyanurate foam insulation with 1/2 inch (13 mm) perlite roof insulation laminated to one side and a strong fibrous glass facer on the other; conforms to or exceeds the requirements of ASTM C 1289 / FS HH-I, EnergyGuard Composite, with the following characteristics:
	** NOTE TO SPECIFIER ** Provide project specific information.
			1.	Board Thickness: ______
			2.	Thermal Resistance (LTTR value): ______
		D.	Rigid polyisocyanurate foam insulation with 1/2 inch (13 mm) gypsum board laminated to one side and a strong fibrous glass facer on the other; conforms to or exceeds the requirements of ASTM C 1289 / FS HH-I, EnergyGuard Composite, with the following characteristics:
	** NOTE TO SPECIFIER ** Provide project specific information.
			1.	Board Thickness: ______
			2.	Thermal Resistance (LTTR value): ______
		E.	Rigid polyisocyanurate foam insulation with 1/2 inch (13 mm) cellulose fiber board laminated to one side and a strong fibrous glass facer on the other; conforms to or exceeds the requirements of ASTM C 1289 / FS HH-I, EnergyGuard Composite, with the following characteristics:
	** NOTE TO SPECIFIER ** Provide project specific information.
			1.	Board Thickness: ______
			2.	Thermal Resistance (LTTR value): ______
		F.	Expanded perlite mineral aggregate board conforming to or exceeding the requirements of FS HH-I-529b, ANSI/ASTM C 728, EnergyGuard Perlite, with the following characteristics:
			1.	Board Density: 9 lb/cf (144 kg/cm) minimum.
	** NOTE TO SPECIFIER ** Provide project specific information.
			2.	Board Thickness: ______
			3.	Thermal Resistance (R value): ______
		G.	Expanded perlite mineral aggregate board conforming to or exceeding the requirements of FS HH-I-529b, ANSI/ASTM C 728, EnergyGuard Tapered Perlite, with the following characteristics:
			1.	Board Density: 9 lb/cf (144 kg/cm) minimum.
	** NOTE TO SPECIFIER ** Provide project specific information.
			2.	Board Thickness: ______
			3.	Thermal Resistance (R value): ______
		H.	Overlayment board made of cellulose fiber conforming to or exceeding the requirements of FS LLL-I-535, Class C, ANSI/ASTM C 208, EnergyGuard Fiberboard, with the following characteristics:
			1.	Board Thickness: 1/2 inch (13 mm).
			2.	Thermal Resistance: 1.32 (2.5 C/W).
		I.	ASTM C-578 Type II, expanded polystyrene recover board (EPS), with the following characteristics:
			1.	Compressive Strength: 15 psi (0.1 MPa) minimum.
			2.	Board Density: 1.35 lb per cubic foot (21.6 kg/cm) minimum.
	** NOTE TO SPECIFIER ** Provide project specific information.
			3.	Board Thickness: ______
			4.	Thermal Resistance: ______
	** NOTE TO SPECIFIER ** A separation mat or cover board must be installed over this insulation prior to installing the EverGuard PVC roof membrane.
		J.	ASTM C-578 Type IX, High density expanded polystyrene board (EPS), with the following characteristics:
			1.	Compressive Strength: 25 psi (0.17 MPa) nominal.
			2.	Board Density: 1.8 lb per cubic foot (28.8 kg/cm) minimum.
	** NOTE TO SPECIFIER ** Provide project specific information.
			3.	Board Thickness: ______
			4.	Thermal Resistance (R value): ______
	** NOTE TO SPECIFIER ** A separation mat or cover board must be installed over this insulation prior to installing the EverGuard PVC roof membrane.
		K.	ASTM C-578 Type X, extruded polystyrene board (XPS), with the following characteristics:
			1.	Compressive Strength: 15 psi (0.1 MPa) minimum.
			2.	Board Density: 1.3 lb per cubic foot (20.8 kg/cm) minimum.
	** NOTE TO SPECIFIER ** Provide project specific information.
			3.	Board Thickness: ______
			4.	Thermal Resistance (R value): ______
	** NOTE TO SPECIFIER ** A separation mat or cover board must be installed over this insulation prior to installing the EverGuard PVC roof membrane.
		L.	ASTM C-578 Type X, 3/8 inch (9.5 mm) extruded polystyrene fan-fold board (XPS), with the following characteristics:
			1.	Compressive Strength: 15 psi (0.1 MPa) minimum.
			2.	Board Density: 1.3 lb per cubic foot (20.8 kg/cm) minimum.
			3.	Board Thickness: 3/8 inch (5mm).
			4.	Thermal Resistance (R value): 1.5.
	** NOTE TO SPECIFIER ** Delete roof board if not required.
	2.3	ROOF BOARD
	** NOTE TO SPECIFIER ** Delete roof board types not required.
		A.	Underlayment or overlayment board with a water-resistant and silicone treated gypsum core with glass fiber facers embedded on both sides, and pre-primed on one side. GP Dens-Deck Prime Roof Board, distributed by GAFMC.
	** NOTE TO SPECIFIER ** Provide project specific information.
			1.	Board Thickness: ______
			2.	Thermal Resistance (R value): ______
		B.	Underlayment or overlayment board with a water-resistant and silicone treated gypsum core with glass fiber facers embedded on both sides and a factory-applied low perm, integrated, durable coating that enhances bond strength of the membrane system. GP Dens-Deck DuraGuard Roof Board, distributed by GAFMC
	** NOTE TO SPECIFIER ** Provide project specific information.
			1.	Board Thickness: ______
			2.	Thermal Resistance (R value): ______
		C.	Underlayment or overlayment board with a water-resistant and silicone treated gypsum core with glass fiber facers embedded on both sides. GP Dens-Deck Roof Board, distributed by GAFMC
	** NOTE TO SPECIFIER ** Provide project specific information.
			1.	Board Thickness: ______
			2.	Thermal Resistance (R value): ______
		D.	Fiber-reinforced gypsum panel with an integral water-resistant core. Securock Roof Board by US Gypsum.
	** NOTE TO SPECIFIER ** Provide project specific information.
			1.	Board Thickness: ¼”
			2.	Thermal Resistance (R value) of: .20
	** NOTE TO SPECIFIER ** Delete if not required.
	2.4	INSULATION ACCESSORIES
		A.	Tapered Edge Strip: Factory fabricated rigid perlite strip cut at angles to provide a smooth transition between differences in elevation. EnergyGuard Tapered Edge Strip, by GAFMC.
	** NOTE TO SPECIFIER ** Delete if not required.
	2.5	SEPARATION SHEETS
		A.	Fire resistant glass fiber mat used as a separation sheet over polystyrene foam insulation or beneath insulation over wood substrates. Each roll contains ten (10) squares (90 sm) of material, 4 feet by 250 feet (1.20 m by 76.90 m), 80 lb (36400 g), Fiberglass Fire Sheet 10.
		B.	Fire resistant glass fiber mat used as a separation sheet over polystyrene foam insulation or beneath insulation over wood substrates. Each roll contains four (4) squares (38 sm) of material, 4 feet by 105 feet (1.20 m by 32.30 m), 79 lbs. (35900 g), Fiberglass Fire Sheet 50.
		C.	Non-woven polyester UV-stabilized mat, 3 oz/sy (112.5 g/m2) used as a separation sheet beneath membranes as a protection layer and used over membranes in ballast applied assemblies. Each roll contains thirty (30) squares (279 sm) of material, 10 feet by 300 feet (3.07 m by 92.30 m), 75 lb (34100 g), Poly Separation Layer 3 oz.
		D.	Non-woven polyester UV-stabilized mat, 6 oz/sy (225 g/ m2) used as a separation sheet beneath membranes as a protection layer and used over membranes in ballast or paver applied assemblies. Each roll contains thirty (30) squares (279 sm) of material, 10 feet by 300 feet (3.07 m by 92.30 m), 125 lbs. (56800 kg), Poly Cushioning Layer 6 oz.
	** NOTE TO SPECIFIER ** Below for use in mechanically attached systems only.
		E.	Fire Resistant non woven fiberglass slip sheet used as a separation sheet over polystyrene foam insulation or beneath insulation over wood substrates providing a UL class A fire rating. Each roll contains ten (10) squares (1,000 sq. ft.) of material, 6’ x 166.7’ (1.83m x 50.8m), 110 lbs nominal weight, VersaShield Solo Fire Resistant Slip Sheet by GAFMC.
	2.6	MEMBRANE MATERIALS
	** NOTE TO SPECIFIER ** Delete membrane materials not required.
		A.	A smooth type, polyester scrim reinforced PVC membrane with a nominal 0.050 inch (50 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 675 sq ft of roofing material, 81” X 100’, weighing 222 lbs. Each half sheet roll contains approximately 337 sq.ft. of roofing material, 40.5’ X 100’, weighing 110 lbs. EverGuard PVC 50 single-ply roofing membrane by GAFMC.
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
		B.	A smooth type, polyester scrim reinforced PVC membrane with a nominal 0.060 inch (60 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 540 sq ft of roofing material, 76” X 90’, weighing 207 lbs. Each half sheet roll contains approximately 270 sq.ft. of roofing material, 40.5’ X 80’, weighing 103 lbs. EverGuard PVC 60 single-ply roofing membrane by GAFMC.
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
		C.	A smooth type, polyester scrim reinforced PVC membrane with a nominal 0.080 inch (80 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 438 sq ft of roofing material, 76” X 60’, weighing 243 lbs. Each half sheet roll contains approximately 219 sq.ft. of roofing material, 40.5’ X 65’, weighing 118 lbs. EverGuard PVC 80 single-ply roofing membrane by GAFMC.
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
		D.	A fleece-backed, polyester scrim reinforced PVC membrane with a nominal 0.060 inch (60 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 475 sq ft of roofing material, 76”X 75’, weighing 258 lbs. EverGuard PVC 60 mil Fleece-Back Membrane by GAFMC.
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
		E.	A fleece-backed, polyester scrim reinforced PVC membrane with a nominal 0.080 inch (80 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 380 sq ft of roofing material, 76”X60’, weighing 225 lbs. EverGuard PVC 80 mil Fleece-Back Membrane by GAFMC.
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
	2.7	FLASHING MATERIALS
	** NOTE TO SPECIFIER ** Delete flashing materials not required.
		A.	A smooth type, polyester scrim reinforced PVC membrane with a nominal 0.050 inch (50 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 675 sq ft of roofing material, 81” X 100’, weighing 222 lbs. Each half sheet roll contains approximately 337 sq.ft. of roofing material, 40.5’ X 100’, weighing 110 lbs. EverGuard PVC 50 single-ply roofing membrane by GAFMC.
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
		B.	A smooth type, polyester scrim reinforced PVC membrane with a nominal 0.060 inch (60 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 540 sq ft of roofing material, 76” X 90’, weighing 207 lbs. Each half sheet roll contains approximately 270 sq.ft. of roofing material, 40.5’ X 80’, weighing 103 lbs. EverGuard PVC 60 single-ply roofing membrane by GAFMC.
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
		C.	A smooth type, polyester scrim reinforced PVC membrane with a nominal 0.080 inch (80 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 438 sq ft of roofing material, 76” X 60’, weighing 243 lbs. Each half sheet roll contains approximately 219 sq.ft. of roofing material, 40.5’ X 65’, weighing 118 lbs. EverGuard PVC 80 single-ply roofing membrane by GAFMC.
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
		D.	A fleece-backed, polyester scrim reinforced PVC membrane with a nominal 0.060 inch (60 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 475 sq ft of roofing material, 76”X 75’, weighing 258 lbs. EverGuard PVC 60 mil Fleece-Back Membrane by GAFMC.
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
		E.	A fleece-backed, polyester scrim reinforced PVC membrane with a nominal 0.080 inch (80 mils) thickness, for use as a single ply roofing membrane. Meets or exceeds the minimum requirements of ASTM D-4434. Each full roll contains approximately 380 sq ft of roofing material, 76”X60’, weighing 225 lbs. EverGuard PVC 80 mil Fleece-Back Membrane by GAFMC
	** NOTE TO SPECIFIER ** Delete membrane color not required.
			1.	Color: White.
			2.	Color: Gray.
			3.	Color: Tan.
	** NOTE TO SPECIFIER ** Bitumen for insulation installation. Delete if not required.
	2.8	BITUMEN
		A.	Asphalt bitumen: ASTM D 312 Type III & IV.
		B.	Asphalt primer: ASTM D 41 Leak Buster Matrix 307 PremiumAsphalt Primer, by GAFMC.
	2.9	ADHESIVES, SEALANTS AND PRIMERS
	** NOTE TO SPECIFIER ** Delete materials not required.
		A.	Solvent-based Bonding Adhesive: Solvent based adhesive for use with EverGuard PVC membranes, EverGuard 2331 Bonding Adhesive, by GAFMC.
		B.	Solvent based liquid, required to protect field cut edges of EverGuard PVC membranes. Applied directly from a squeeze bottle, EverGuard PVC Cut Edge Sealant, by GAFMC
		C.	Solvent based, trowel grade synthetic elastomeric sealant. Durable and UV resistant suitable for use where caulk is typically used. Available in 10 oz. tubes, FlexSeal Caulk Grade by GAFMC.
		D.	One part butyl based high viscosity sealant suitable for sealing between flashing membrane and substrate surface behind exposed termination bars and for sealing between roofing membrane and drain flange. EverGuard Water Block, by GAFMC.
		E.	100 percent solids epoxy based two-part sealant suitable for filling sealant pans at irregularly-shaped penetrations. Epoxy is part A. Polyamide is part B. EverGuard 2-Part Pourable Sealer, by GAFMC.
		F.	Asphalt primer: ASTM D 41 Matrix™ 307 Standard Asphalt Primer, by GAFMC.
		G.	Insulation Adhesive: Oly-Bond 500 distributed by GAFMC.
		H.	Insulation Adhesive: Oly-Bond 500 Spot Shot distributed by GAFMC.
		I.	Insulation Adhesive: Oly-Bond 500 Green distributed by GAFMC.
		J.	Insulation Adhesive: Oly-Bond 500 Spot Shot Green distributed by GAFMC.
	** NOTE TO SPECIFIER ** It is the responsibility of those involved with the design of the building to obtain indemnification for the attachment and integrity of the Insta-Stik Product. GAFMC assumes no responsibility for the Insta-Stik product or its performance within the system.
		K.	Insulation Adhesive: Insta-Stik by Dow Chemical.
	** NOTE TO SPECIFIER ** Delete rock ballast if not required.
	2.10	STONE BALLAST
		A.	Stone ballast shall be smooth, water worn gravel with rounded edges and corners, relatively free of sand, loam, and other foreign substances, and contain less than 4 percent fines.
	** NOTE TO SPECIFIER ** Delete paver ballast if not required.
	2.11	PAVER BALLAST
		A.	Non-Interlocking Pavers: Commodity precast pavers engineered and fabricated for roof ballast application with drainage channel bottom and shiplap edges.
		B.	Interlocking Pavers: Extruded polystyrene insulation panels with integral latex-modified mortar top face, 2 inches (51 mm) thick. Insulated pavers to be provided with tongue and groove interlocking edges, natural gray color.
	2.12	ACCESSORIES
	** NOTE TO SPECIFIER ** Delete mechanical fasteners not required.
		A.	Plates and Fasteners:
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			1.	DrillTec Standard Screws: Alloy steel fastener with CR-10 coating with a .215 inch (5 mm) diameter thread: Factory Mutual Standard 4470 Approved, #3 Phillips truss head or hex head.
			2.	DrillTec ASAP 3P Fastener: Assembled screw and 3 inches (76 mm) locking plastic plate. Alloy steel fastener with CR-10 coating with a .215 inch (5 mm) diameter thread: Factory Mutual Standard 4470 Approved, #3 Phillips truss head.
			3.	DrillTec ASAP 3S Fastener: Assembled screw and 3 inches (76 mm) steel plate. Alloy steel fastener with CR-10 coating with a .215 inch (5 mm) diameter thread: Factory Mutual Standard 4470 Approved, #3 Phillips truss head.
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			4.	DrillTec HD Screws: Heavy duty gauge alloy steel fastener with CR-10 coating with a .245 inch (6.2 mm) diameter thread: Factory Mutual Standard 4470 Approved, #3 Phillips truss head for use on heavy steel decks.
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			5.	DrillTec XHD Screws: Heavy duty gauge alloy steel fastener with CR-10 coating with a .275 inch (6.9mm) diameter thread: Factory Mutual Standard 4470 Approved, #3 Phillips truss head for use on heavy steel decks.
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			6.	DrillTec SXHD Screws: Heavy duty gauge alloy steel fastener with CR-10 coating with a .320 inch (8.1 mm) diameter thread: Factory Mutual Standard 4470 Approved, #3 Phillips truss head for use on specific FM assemblies on heavy steel decks.
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			7.	DrillTec Polymer Screws: A large diameter glass fiber filled nylon auger with a 1 inch (25 mm) head and with locking wire barbs. Major thread diameter of .750 inch (19 mm). To be used with 3 inches (76 mm) Steel Round Plate or 2 inches (51 mm) barbed steel plate.
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			8.	Drill-Tec Spikes: Hammer-in, non-threaded fastener designed to secure insulation and membrane to structural concrete. Alloy steel fastener with a CR-10 coating and a .250 inch (6.3 mm) shank diameter.
			9.	DrillTec Lite-Deck Fastener: A large diameter reinforced nylon screw with a #3 square drive flat head. Thread diameter of .375 inch (9.5 mm) and shank diameter of .312 inch (7.9 mm). Uses a 3 inches (76 mm) Metal Round Plate fastening system.
			10.	DrillTec CR Base Sheet Fastener: G-90 galvanized, CR-10 Corrosion resistant coating with 1.125 inches (28.6 mm) by1 inch (25 mm) head and 1 3/4 inches (44 mm) leg length. Uses 2 3/4 inches (19 mm) diameter Galvalume steel roof disc.
			11.	DrillTec CR 1.2 Base Sheet Fastener: G-90 galvanized, CR-10 Corrosion resistant coating with 1.125 inches (28.6 mm) by1 inch (25 mm) head and 1.2 inches (30 mm) leg length. Uses 2 3/4 inches (70 mm) diameter Galvalume steel roof disc.
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			12.	DrillTec Insulation Plates: Galvalume, 3 inches (76 mm) diameter, suitable for use with DrillTec Standard and HD screws, and DrillTec Spikes. Special design available for use with DrillTec Polymer Screws.
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			13.	DrillTec XHD Plates: Galvalume, 2 3/8 inches (60 mm) diameter, with a barbed underside. suitable for use with DrillTec Standard, HD, and XHD Screws, and DrillTec Spikes.
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			14.	DrillTec SXHD Plates: Galvalume, 2 3/4 inches (70 mm) diameter, with a double barbed underside. Required for use with DrillTec SXHD Screws, HD Screws and DrillTec Spikes for specific FM assemblies.
	** NOTE TO SPECIFIER ** E.G. Fastener. Delete if not required.
			15.	DrillTec SHD Plates: Galvalume, 2 inches (51 mm) diameter, with a double barbed underside. Suitable for use with DrillTec Standard, HD, XHD, and SXHD Screws, and DrillTec Spikes.
			16.	DrillTec Lite-Deck Plate: Galvalume, plate with extra wide diameter designed specifically for Lite-Deck Fastener.
			17.	Drill Tec Locking Impact Nail: Factory assembled, G-90 Galvalume coated fastener designed to install base sheets or insulation to gypsum or cementitious wood fiber. 1.8 inches to 4.8 inches (46 mm to 122 mm) lengths available with a 2.7 inches (69 mm) diameter plate.
			18.	Drill•Tec Purlin Fastener: Alloy steel fastener with CR-10 coating with a .210” diameter thread. Factory Mutual Standard 4470 Approved, ¼” hex head. For use when mechanically fastening single-ply membranes in metal-retrofit applications.
			19.	Threaded Cap Nail: Annular-threaded electro-galvanized with yellow di-chromate coating, with 1 inch (25 mm) round or square cap, as manufactured by the Simplex Nail Corporation.
			20.	Two-Piece Tube Nail: 1 inch (25 mm) diameter cap; when the nail is driven down through the tube of first part that was installed, the nail hooks up to provide backout resistance, as manufactured by The Simplex Corporation.
			21.	Nail-Tite Type-R Fasteners: Self-locking one-piece fastener for securing base ply when roofing over existing poured gypsum roof decks. Shank: 1 inch (25 mm) tapered cone precision formed from corrosion resistant galvanized (G-90) steel. Cap: 1-1/4 inches (32 mm) round cap formed from corrosion resistant Galvalume (AZ-55) steel, reinforced to resist cupping during driving. The shank is securely wedged to cap forming rigid one-piece fastener, by E. S. Products.
		B.	Flashing Accessories:
			1.	A smooth type, unreinforced polyvinyl chloride based membrane for use as an alternative flashing/reinforcing material for penetrations and corners. Required whenever preformed vent boots cannot be used, available in White/Gray and White/Tan, 0.080 inches (80 mils) nominal thickness and sheet size: 24in x 50ft. EverGuard PVC UN-80 Detailing Membrane, by GAFMC.
			2.	A smooth type, unreinforced polyvinyl chloride based membrane for use as an alternative flashing/reinforcing material for penetrations and corners. Required whenever preformed vent boots cannot be used, available in White/Gray and White/Tan, 0.080 inches (80 mils) nominal thickness and sheet size: 6in x 50ft. EverGuard PVC UN-80 Detailing Membrane, by GAFMC.
			3.	A smooth type, unreinforced polyvinyl chloride based membrane for use as an alternative flashing/reinforcing material for penetrations and corners. Required whenever preformed vent boot A smooth type, unreinforced polyvinyl chloride based membrane for use as an alternative flashing/reinforcing material for penetrations and corners. Required whenever preformed vent boots cannot be used, available in White/Gray and White/Tan, 0.080 inches (80 mils) nominal thickness and sheet size: 12in x 50ft. EverGuard PVC UN-80 Detailing Membrane, by GAFMC.
			4.	An 8 inch (20 cm) wide smooth type, polyester scrim reinforced thermoplastic polyolefin membrane strip for use as a cover strip over coated metal and stripping-in coated metal flanges and general repairs: 0.045 inches (45 mils) nominal thickness with 100 foot length, available in White, Tan, Gray, EverGuard PVC Flashing Membrane, by GAFMC.
			5.	Extruded aluminum termination bar with angled lip caulk receiver and lower leg bulb stiffener. Pre-punched slotted holes at 6” on center or 8” on center. ¾” x 10’ with 0.090” cross section, EverGuard Lip Termination Bar, by GAFMC.
			6.	24 gauge steel with 0.040” thick PVC based film as required for fabrication into metal gravel stop and drip edge profiles, metal base and curb flashings, sealant pans, and scupper sleeves. Standard sheet size 4’ x 10’, sheet weight 47 lbs. Custom sizes available, EverGuard PVC Coated Metal, by GAFMC.
		C.	Wall and Curb Accessories:
			1.	0.075” thick molded PVC membrane designed to accommodate both inside and outside corners of base and curb flashing. Hot-air welds directly to EverGuard PVC membrane. Size 4” x 4” with 4” flange, EverGuard PVC Preformed Outside Corners by GAFMC
			2.	0.055” molded TPO membrane inside corners of base and curb flashing. Hot-air welds directly to Everguard TPO membrane. Size 6” x 6” x 5.5” high EverGuard PVC Preformed Inside Corners by GAFMC.
		D.	Penetration Accessories:
			1.	0.075” thick molded PVC membrane sized to accommodate most common pipe and conduits, (1” to 6” diameter pipes), including square tube. Hot-air welded directly to EverGuard PVC membrane, supplied with stainless steel clamping rings, EverGuard PVC Preformed Vent Boots by GAFMC.
		E.	Field of Roof Accessories:
			1.	Factory fabricated assemblies used to accommodate three-dimensional joints in a roof structure. Two standard sizes to accommodate most common joint widths. Standard 50 foot continuous length minimizes joints, universal style suitable for both field and wall expansion joint in both flat-mounted and curb-mounted styles. Made of 0.060” thick reinforced membrane with foam supported bellows, heat welds directly to roofing membrane. Equipped with metal nailing flanges and membrane welding flaps, Metalastic Prefabricated Expansion Joint Covers by GAFMC.
			2.	.080” thick smooth type, unreinforced thermoplastic polyolefin membrane designed for use as a conforming membrane seal over T-joints in 80 mil membrane applications. EverGuard UN-80 T-Joint Patches, by GAFMC.
			3.	1/8” thick extruded and embossed PVC roll 30” x 50’, heat welds directly to roofing membrane. Unique herringbone traction surface. Gray in color, EverGuard PVC Walkway Rolls, by GAFMC.
			4.	Low VOC, water based coating system that provides outstanding flame spread and penetration protection to combustible roof decks in the event of fire. Using patent pending FireShield technology, to provide UL Class A performance with mechanically attached PVC roof systems FireOut Fire Barrier Coating by GAFMC.
	PART 3	EXECUTION
	3.1	EXAMINATION
		A.	Verify that the surfaces and site conditions are ready to receive work.
		B.	Verify that the deck is supported and secured.
		C.	Verify that the deck is clean and smooth, free of depressions, waves, or projections, and properly sloped to drains, valleys, eaves, scuppers or gutters.
		D.	Verify that the deck surfaces are dry and free of ice or snow.
		E.	Verify that all roof openings or penetrations through the roof are solidly set, and that all flashings are tapered.
	3.2	SUBSTRATE PREPARATION
	** NOTE TO SPECIFIER ** Delete roof deck not required.
		A.	Steel Deck:
	** NOTE TO SPECIFIER ** FM requirements may supercede those set forth in this section. Consult the current FM Guide for more information.
			1.	Metal decks shall be a minimum uncoated thickness of 22 gauge (0.8 mm) and shall have a G-90 galvanized finish on all panels.
			2.	Decks shall comply with the gauge and span requirements in the current Factory Mutual FM Approval Guide and be installed in accordance with Loss Prevention Data Sheet 1-28 or specific FM approval.
	** NOTE TO SPECIFIER ** Delete if re-roofing not required.
			3.	When re-roofing over steel decks, surface corrosion shall be removed, and repairs to severely corroded areas made. Loose or inadequately secured decking shall be fastened, and irreparable or otherwise defective decking shall be replaced.
		B.	Structural Concrete Deck:
			1.	Minimum deck thickness for structural concrete is 4 inches (102 mm).
	** NOTE TO SPECIFIER ** Concrete decks that are poured over non-vented metal decks or pans that remain in place may trap moisture in the deck beneath the roof system and are not acceptable.
			2.	Only poured in place concrete decks that provide bottom side drying are acceptable.
			3.	The roof deck shall be properly cured prior to application of the roofing system. Curing agents shall be checked for compatibility with roofing materials. Prior to the installation of the roof assemblies, evaluation of the surface moisture and deck's dryness by the use of ASTM D 4263 or hot bitumen test procedures shall be conducted.
			4.	The deck shall be smooth, level and cannot be wet or frozen.
			5.	Treat cracks greater than 1/8 inch (3 mm) in width in accordance with the deck manufacturer's recommendations.
			6.	Sumps for the roof drains shall be provided in the casting of the deck.
			7.	When insulation or roofing is to be adhered with hot asphalt, prime the deck with asphalt/concrete primer, ASTM D 41 at the rate of one gallon per 100 square feet (0.4 l/sm). Allow the primer to dry prior to the application of the roofing system.
	** NOTE TO SPECIFIER ** Delete if re-roofing not required.
			8.	With retrofit roof applications, it is required that the deck be inspected for defects. Defects are to be corrected per the deck manufacturer's recommendations prior to the roofing application.
		C.	Wood Deck (Plank / Heavy Timber):
	** NOTE TO SPECIFIER ** Tongue and groove or shiplap lumber is preferred to square edge material since subsequent shrinkage or warping of square edge planks may cause ridging of the roof system above adjacent boards.
			1.	Wood boards shall be at least 1 inch (25 mm) nominal thickness and have a nominal width of 4 feet-6 inches (1.37 m).
			2.	All boards shall have a bearing on rafters at each end and be securely nailed.
			3.	Lumber shall be kiln dried.
			4.	Preservatives or fire retardants used to treat decking shall be compatible with roofing materials.
			5.	Decking shall be kept dry and roofed promptly after installation.
			6.	Knotholes or large cracks in excess of 1/4 inch (6 mm) shall be covered with securely nailed sheet metal.
	** NOTE TO SPECIFIER ** Delete if re-roofing not required.
			7.	In all retrofit roof applications, it is required that deck be inspected for defects. Any defects are to be corrected per the deck manufacturer's recommendations and standards of the APA/Engineered Wood Association prior to new roof application.
		D.	Plywood Deck:
			1.	Plywood sheathing shall be exterior grade, minimum 4 ply, and not less than 15/32 inch (12 mm) thick.
			2.	Preservatives or fire retardants used to treat the decking shall be compatible with roofing materials.
			3.	The deck shall be installed over joists that are spaced 24 inches (610 mm) o.c. or less.
			4.	The deck shall be installed so that all four sides of each panel bear on and are secured to joist and cross blocking. "H" clips are not acceptable.
			5.	Panels shall be installed with a 1/8 inch to 1/4 inch (3mm to 6mm) gap between panels and shall match vertically at joints to within 1/8 inch (3mm).
			6.	Decking shall be kept dry and roofed promptly after installation.
		E.	Oriented Strand Board (OSB) Deck:
			1.	Oriented Strand Board shall carry a Structural 1 rating when used as a decking material.
			2.	Preservatives or fire retardants used to treat decking shall be compatible with roofing materials.
			3.	The deck shall be installed over joists that are spaced 24 inches (610 mm) o.c. or less.
			4.	The deck shall be installed so that all four sides of each panel bear on and are secured to joist and cross blocking; the APA/Engineered Wood Association (APA) recommendations. "H" clips are not acceptable.
			5.	Panels shall be installed with a 1/8 inch to 1/4 inch (3mm to 6mm) gap between panels and shall match vertically at joints to within 1/8 inch (3mm).
			6.	Decking shall be kept dry and roofed promptly after installation.
			7.	Tape and staple fastening systems may be used on wood decks when they comply with local building codes.
		F.	Lightweight Insulating Concrete Deck:
	** NOTE TO SPECIFIER ** Individual deck manufacturer's standards apply when their specifications exceed the minimum thickness, compressive strength, or density requirements.
			1.	Lightweight insulating concrete decks are required to have a minimum thickness of 2 inches (51 mm), a minimum compressive strength of 125 psi (0.86 MPa) and a minimum density of 22 pcf (352 kg/sm).
			2.	The lightweight insulating deck/fill shall be installed by an applicator approved by the deck manufacturer.
			3.	The roof system shall be installed immediately following deck curing to prevent damage from exposure to precipitation. The deck manufacturer determines the minimum curing time and maximum exposure limitations.
			4.	LWIC shall not be poured during rainy periods. Deck areas that have frozen before they have cured shall be removed and replaced. Decks which receive precipitation prior to installation of the roof membrane shall be checked for moisture content and dryness.
			5.	The moisture content of existing LWIC shall be under 20 percent when insulation is to be fastened directly to it. Where moisture content exceeds 20 percent, a layer of Stratavent Eliminator Venting Base Sheet shall be installed prior to the insulation.
			6.	Where the mean January temperature (Reference current ASHRAE Fundamentals Handbook) is below 40 degrees F (4.4 degrees C), lightweight insulating concrete decks shall be poured and roofed between April 1 and October 31. This type of deck is unacceptable in Alaska.
			7.	Lightweight insulating concrete decks are acceptable only on slopes up to 1 inch per foot (83 mm/m).
		G.	Cementitious Wood Fiber:
			1.	Decks shall be protected from the weather during storage and application; any wet or deformed decking shall be removed and replaced.
			2.	Cementitious wood fiber decks shall not be installed over high humidity occupancies.
			3.	Cementitious wood fiber decks shall have a minimum design load as recommended by the manufacturer.
			4.	All cementitious wood fiber deck panels shall be anchored against uplift and lateral movement.
			5.	The deck shall be installed level. Any deflection, irregularities, or otherwise damaged panels shall be corrected or replaced.
		H.	Gypsum:
			1.	Gypsum decks shall be smooth and free from deflections or ridges.
			2.	When installing base sheet fasteners, an average fastener withdrawal resistance as recommended by the fastener manufacturer shall be obtained; however, at no time shall it be less than 40 lb (178 N) per fastener.
			3.	Wet or frozen poured gypsum decks are not suitable to receive a roof.
			4.	Poured-in-place gypsum roof decks contain a large percentage of moisture. All necessary precautions shall be taken to avoid the entrapment of moisture under the roofing system. In addition to ventilation of the underside to allow for proper curing, topside and perimeter venting shall be implemented.
		I.	Recover:
			1.	Suitable roofs for recover shall be free of dust, dirt, debris, and any contaminants that may adversely affect the performance of the new roof. Areas of substantial deck deflection or membrane imperfections shall be corrected prior to installing any new roofing.
			2.	For recover installations over single-ply, fluid applied, coal tar and metal roofs, contact GAFMC Contractor Services for prior approval and technical requirements.
			3.	Taking test cuts to verify the existing roof construction and condition. Three test cuts shall be made for roofs under 100 squares (930 sm) and one test cut per 100 squares (930 sm) above the minimum amount.
			4.	Existing substrates and insulation (if applicable) shall be dry over the majority of the roof area. Wet or deteriorated areas of insulation and substrate shall be removed and replaced with new materials. When adhering insulation or new roofing directly to the existing roof surface, the existing roof system components shall be well attached to each other and their substrate.
			5.	All applicable code requirements shall be met for recover over an existing roofing system.
	** NOTE TO SPECIFIER ** It is highly recommended and in certain circumstances, required, that a moisture survey be made to determine the extent of wet insulation and moisture entrapment. Contact GAFMC Contractor Services for more information on moisture surveys. ** NOTE TO SPECIFIER ** GAFMC does not recommend partial recover or re-roofing of a single roof area due to the potential for defects in the portion of the roof system not replaced or negatively affecting the performance of the new membrane. When required by project conditions or budget considerations, GAFMC requires full separation of the old and new roof areas by means of a full curb mounted expansion joint or area divider installed to provide a complete watertight seal or break between areas. Tie-in constructions, in which the old and new membranes are adhered directly to each other and stripped in are not acceptable for coverage under certain guarantees.
	3.3	INSTALLATION - GENERAL
		A.	Install GAFMC's EverGuard PVC roofing system according to all current application requirements in addition to those listed in this section.
	** NOTE TO SPECIFIER ** Provide selected specification number if required. Delete if provision not used.
		B.	GAFMC EverGuard Specification #: __________________.
		C.	Start the application of membrane plies at the low point of the roof or at the drains, so that the flow of water is over or parallel to, but never against the laps.
	** NOTE TO SPECIFIER ** Insulation bitumen. Delete if not required.
	3.4	BITUMEN HANDLING
		A.	Do not mix different types of asphalt.
		B.	Do not heat the asphalt to or above its flash point or hold the asphalt at temperatures above the finished blowing temperature for more than 4 hours.
		C.	Do not keep heated tankers above 325 degrees F (163 degrees C) overnight.
	** NOTE TO SPECIFIER ** Permate vapor retarder Delete if not required.
	3.5	VAPOR RETARDER
		A.	Apply compatible adhesive to the substrate at the rate of 1/2 gallon per 100 square feet (2 l/10 sm), applied in approximate 1/2 inch (13 mm) wide ribbons.
		B.	Install sheet into the adhesive applied to the substrate so that wrinkles and buckles are not formed. Broom sheet to ensure full embedment into the adhesive.
		C.	Lap sheet a minimum of 6 inches (150 mm) for side and end laps. Adhere laps together with compatible adhesive.
		D.	Seal perimeter and penetration areas with foam sealant.
	** NOTE TO SPECIFIER ** Insulation. Delete if not required.
	3.6	INSULATION - GENERAL
		A.	Do not apply roof insulation or roofing until all other work trades have completed jobs that require them to traverse the deck on foot or with equipment. A vapor retarder coated lightly with asphalt may be applied to protect the inside of the structure prior to the insulation and final roofing installation. Before the application of the insulation, any damage or deterioration to the vapor retarder shall be repaired.
		B.	Do not install wet, damaged or warped insulation boards.
		C.	Install insulation boards with staggered board joints in one direction (unless taping joint).
		D.	Install insulation boards snug. Gaps between board joints shall not exceed 1/4 inch (6 mm). All gaps in excess of 1/4 inch (6 mm) shall be filled with like insulation material.
		E.	Wood nailers shall be 3-1/2 inches (89 mm) minimum width or 1 inch (25 mm) wider than metal flange. They shall be of equal thickness as the insulation with a minimum 1 inch (25 mm) thickness. All nailers shall be securely fastened to the deck.
		F.	Do not kick insulation boards into place.
		G.	Miter and fill the edges of the insulation boards at ridges, valleys and other changes in plane to prevent open joints or irregular surfaces. Avoid breaking or crushing of the insulation at the corners.
		H.	Insulation shall not be installed over new lightweight insulating concrete.
		I.	Roof tape, if required over insulation joints, shall be laid evenly, smoothly and embedded in a uniform coating of hot steep asphalt with 4 inches (102 mm) end laps. Care shall be taken to assure smooth application of tape, and full embedment of the tape in the asphalt.
		J.	Do not install any more insulation than will be completely waterproofed each day.
	3.7	INSULATION - BASE LAYER
	** NOTE TO SPECIFIER ** Mechanically fastened. Delete if not required.
		A.	The insulation shall be securely attached to the roof deck. A minimum FMRC 1-60 attachment is recommended. Refer to FMRC Approval Guide for FM fastening patterns. Factory Mutual requires fastener density increased in corner areas for FM 1-60 and perimeter, and corner area fastener density increases for FM 1-90 or greater. Refer to FM Loss Prevention Data Sheets 1-7, 1-28, and 1-49.
		B.	Use only fasteners with a minimum 3 inch (76 mm) stress plate when mechanically attaching insulation. Do not attach insulation with nails.
	** NOTE TO SPECIFIER ** Asphalt Adhered. Delete if not required.
		C.	Install insulation layers, maximum 4 feet by 4 feet (1.22 m by 1.22 m) board size, in a full and uniform mopping of hot asphalt applied at the rate of 25 lb/square (1.2 kg/sm) +/- 20 percent. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6 inches (152 mm) to eliminate continuous vertical gaps.
	** NOTE TO SPECIFIER ** Monster Grip. Delete if not required.
		D.	The substrate shall be free of debris, dust, dirt, oil, grease, and standing water before applying the adhesive.
		E.	Install insulation layers applied with 1/4 inch (6 mm) beads of Matrix 157 spaced 6 inches (152 mm) O.C. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6 inches (152 mm) to eliminate continuous vertical gaps.
	** NOTE TO SPECIFIER ** Oly Bond. Delete if not required.
		F.	The substrate shall be free of debris, dust, dirt, oil, grease, and standing water before applying the adhesive.
		G.	Install insulation layers applied with beads of Oly Bond 500 spaced 12 inches (305 mm) O.C. Approximate coverage rate is one (1) gallon per 100 square feet (0.42 l/sm), depending on the substrate. Allow the foam to rise 1/2 inch to 3/4 inch (13 mm to 19 mm). Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6 inches (152 mm) to eliminate continuous vertical gaps.
	** NOTE TO SPECIFIER ** Insta-Stik. Delete if not required.
		H.	The substrate shall be free of debris, dust, dirt, oil, grease, and standing water before applying the adhesive.
		I.	Install insulation layers applied with 3/4 inch (19 mm) beads of Insta-Stik spaced 12 inches (305 mm) O.C. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6 inches (152 mm) to eliminate continuous vertical gaps.
	** NOTE TO SPECIFIER ** Loose Laid. Delete if not required.
		J.	Loose lay the base layer of insulation for subsequent layers to be simultaneously attached. Minimal fastening shall be performed to avoid movement of the boards.
	3.8	INSULATION - SUBSEQUENT LAYERS
	** NOTE TO SPECIFIER ** Simultaneous Attachment. Delete if not required.
		A.	The insulation shall be securely attached to the roof deck. A minimum FMRC 1-60 attachment is recommended. Refer to FMRC Approval Guide for FM fastening patterns. Factory Mutual requires fastener density increased in corner areas for FM 1-60 and perimeter, and corner area fastener density increases for FM 1-90 or greater. Refer to FM Loss Prevention Data Sheets 1-7, 1-28, and 1-49.
		B.	Multiple layers of insulation of the same, non-tapered insulation material may be simultaneously mechanically fastened with approved fasteners and plates through the top layer of insulation to the structural deck. Individual layers of insulation shall not exceed 3 inches (7.6 mm) in thickness nor total thickness of all layers shall not exceed 5 inches (127 mm) without written approval of GAFMC Contractor Services.
		C.	Use only fasteners with a minimum 3 inch (76 mm) stress plate when mechanically attaching insulation. Do not attach insulation with nails.
	** NOTE TO SPECIFIER ** Asphalt Adhered. Delete if not required.
		D.	Install insulation layers, maximum 4 feet by 4 feet (1.22 m by 1.22 m) board size, in a full and uniform mopping of hot asphalt applied at the rate of 25 lb/square (1.2 kg/sm) 20 percent. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6 inches (152 mm) to eliminate continuous vertical gaps.
	** NOTE TO SPECIFIER ** Monster Grip. Delete if not required.
		E.	The substrate shall be free of debris, dust, dirt, oil, grease, and standing water before applying the adhesive.
		F.	Install insulation layers applied with 1/4 inch beads of Matrix 157 spaced 6 inches (152 mm) O.C. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6 inches (152 mm) to eliminate continuous vertical gaps.
	** NOTE TO SPECIFIER ** Oly Bond. Delete if not required.
		G.	The substrate shall be free of debris, dust, dirt, oil, grease, and standing water before applying the adhesive.
		H.	Install insulation layers applied with beads of Oly Bond 500 spaced 12 inches (305 mm) O.C. Approximate coverage rate is one (1) gallon per 100 square feet (0.42l/sm), depending on the substrate. Allow the foam to rise 1/2 inch to 3/4 inch (13 mm to 19 mm). Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6 inches (152 mm) to eliminate continuous vertical gaps.
	** NOTE TO SPECIFIER ** Insta-Stik. Delete if not required.
		I.	The substrate shall be free of debris, dust, dirt, oil, grease, and standing water before applying the adhesive.
		J.	Install insulation layers applied with 3/4 inch (19 mm) beads of Insta-Stik spaced 12 inches (305 mm) O.C. Press each board firmly into place. Stagger the joints of additional layers in relation to the insulation joints in the layer(s) below by a minimum of 6 inches (152 mm) to eliminate continuous vertical gaps.
		K.	Do not install any more insulation than will be completely waterproofed each day.
	3.9	PROTECTION LAYER
		A.	Polymat protection layer shall be installed between the roofing membrane and the substrate.
		B.	Fire sheet 50 or 10 fiberglass sheet protection layer shall typically be installed when required by design professionals or code authority to address code or approval requirements or as a separator layer.
		C.	Install fiberglass sheet or polymat protection layer loose-applied over substrate surface so that wrinkles and buckles are not formed.
		D.	Overlap sheets a minimum of 6" for side and end laps.
	** NOTE TO SPECIFIER ** Available For Mechanically Attached Systems Only. Delete if not Required.
	3.10	VERSASHIELD SOLO
		A.	Install VersaShield Solo loose-applied over substrate surface so that wrinkles and buckles are not formed perpendicular to the direction of the PVC membrane.
		B.	Overlap membrane a minimum 2 " at the side laps and minimum 4" at the end laps.
		C.	Use corrosive resistant nails with 1" diameter metal head or plastic caps to fasten in place.
		D.	Only use enough fasteners to hold in place until primary roof covering is in place.
		E.	Do not install more VersaShield Solo than can be covered in one day.
	3.11	MEMBRANE APPLICATION
	** NOTE TO SPECIFIER ** Fully Adhered. Delete if not required.
		A.	Fully Adhered:
			1.	Place membrane so that wrinkles and buckles are not formed. Any wrinkles or buckles shall be removed from the sheet prior to permanent attachment. Roof membrane shall be fully adhered immediately after it is rolled out, followed by welding to adjacent sheets.
			2.	Overlap roof membrane a minimum of 3 inches (150 mm) for side laps and 3 inches (150 mm) for end laps.
			3.	Install membrane so that the side laps run across the roof slope lapped towards drainage points.
			4.	All exposed sheet corners shall be rounded a minimum of 1 inch (25 mm).
			5.	Use full width rolls in the field and perimeter region of roof.
			6.	Use appropriate bonding adhesive for substrate surface, applied with a solvent-resistant roller, brush or squeegee.
			7.	Fully adhere membrane sheets with bonding adhesive at a rate resulting in 60 square feet/gallon (1.4 sqm/l) of finished roofing material for solvent-based bonding adhesives, and at a rate of 125 square feet/gallon (3 m2/l) of finished roofing material for water-borne bonding adhesive. Apply bonding adhesive to both the underside of the membrane and the substrate surface at 120 square feet per gallon (2.8 sqm/l) (Solvent Based) and 250 square feet per gallon (6 m2/l) (Water Based). A greater quantity of bonding adhesive may be required based upon the substrate surface condition.
			8.	Prevent seam contamination by keeping the adhesive application 2 inches (51 mm) back from the seam area.
			9.	Adhere approximately one half of the membrane sheet at a time. One half of the sheet's length shall be folded back in turn to allow for adhesive application. Lay membrane into adhesive once the bonding adhesive is tacky to the touch.
			10.	Roll membrane with a weighted roller to ensure complete bonding between adhesive and membrane.
			11.	Membrane laps shall be heat-welded together. All welds shall be continuous, without voids or partial welds. Welds shall be free of burns and scorch marks.
			12.	Weld shall be a minimum of 1-1/2 inches (38 mm) in width for automatic machine welding and a minimum 2 inches (51 mm) in width for hand welding.
			13.	Supplemental membrane attachment is required at the base of all walls and curbs, and where the angle of the substrate changes by more than ten (10) degrees (2 inches in 12 inches) (150 mm in 1000 mm). Roofing membrane shall be secured to the structural deck with appropriate Drill-Tec screws and plates spaced every 12 inches (305 mm) o.c. The screws and plates shall be installed no less than 1/2 inch (13 mm) from the membrane edge. Alternatively, the roofing membrane may be turned up the vertical plane a minimum of 3 inches (76 mm) and secured with screws and termination bar fastener spacing is the same as is used for in-lap attachment. The termination bar shall be installed within 1-1/2 inches (38 mm) to 2 inches (51 mm) of the plane of the roof membrane, with a minimum of 1 inch (25 mm) of membrane extending above the termination bar.
			14.	Supplemental membrane attachment to the structural deck is required at all penetrations unless the insulation substrate is fully adhered to the deck. Roofing membrane shall be secured to the deck with appropriate Drill-Tec screws and plates.
			15.	Fasteners shall be installed to achieve the proper embedment depth. Install fasteners without lean or tilt.
			16.	Install fasteners so that the plate or termination bar is drawn down tightly to the membrane surface. Properly installed fasteners will not allow the plate or termination bar to move (underdriving), but will not cause wrinkling of the membrane (overdriving).
	** NOTE TO SPECIFIER ** Mechanically Attached. Delete if not required.
		B.	Mechanically Attached:
			1.	Place membrane so that wrinkles and buckles are not formed. Any wrinkles or buckles shall be removed from the sheet prior to permanent attachment. Roof membrane shall be mechanically fastened immediately after it is rolled out, followed by welding to adjacent sheets.
			2.	Overlap roof membrane a minimum of 5 inches (127 mm) for side laps and 3 inches (76 mm) for end laps.
			3.	Install membrane so that the side laps run across the roof slope lapped towards drainage points.
			4.	All exposed sheet corners shall be rounded a minimum of 1 inch (25 mm).
			5.	Use full width rolls in the field of roof and half width rolls in the perimeter and corner region of the roof and mechanically fastened in the side lap area to the roof deck.
			6.	Membrane laps shall be heat-welded together. All welds shall be continuous, without voids or partial welds. Welds shall be free of burns and scorch marks.
			7.	Weld shall be a minimum of 1-1/2 inches (38 mm) in width for automatic machine welding and a minimum 2 inches (51 mm) in width for hand welding.
			8.	The membrane shall be mechanically fastened in the side lap area to the roof deck with appropriate Drill-Tec fasteners and plates as required by roof system specification and/or Factory Mutual classification requirements.
			9.	The metal plates shall be placed within 1/4 inch (6 mm) to 1/2 inch (13 mm) of the membrane edge. Plates shall not be placed less than 1/4 inch (6 mm) from the membrane edge.
			10.	In the corner regions, additional fasteners shall be installed through the perimeter membrane to form a grid pattern, with a 8 inches (405 mm) wide EverGuard PVC reinforced membrane flashing-strip welded over the additional fasteners. Corners include both outside and inside corners that measure 75 - 105 angle degrees.
			11.	Membrane attachment to the roof deck is required at locations of deck angle changes in excess of five (5) angle degrees (1 inch (25 mm) in 12 inches (305 mm)).
			12.	Supplemental membrane attachment is required at the base of all walls and curbs, and where the angle of the substrate changes by more than five (5) degrees (1 inch (25 mm) in 12 inches (305 mm)). Roofing membrane shall be secured to the structural deck with screws and plates of the same type and spacing used for in-lap attachment. The screws and plates shall be installed no less than 1/2 inch (13 mm)from the membrane edge. Alternatively, the roofing membrane may be turned up the vertical plane a minimum of 3 inches (76 mm) and secured with screws and termination bar fastener spacing is the same as is used for in-lap attachment. The termination bar shall be installed within 1-1/2 inches (38 mm) to 2 inches (51 mm) of the plane of the roof membrane, with a minimum of 1 inch (25 mm) of membrane extending above the termination bar.
			13.	Supplemental membrane attachment to the structural deck is required at all penetrations. Roofing membrane shall be secured to the deck with appropriate Drill-Tec screws and plates.
			14.	Fasteners shall be installed to achieve the proper embedment depth. Install fasteners without lean or tilt.
			15.	Install fasteners so that the plate or termination bar is drawn down tightly to the membrane surface. Properly installed fasteners will not allow the plate or termination bar to move (underdriving), but will not cause wrinkling of the membrane (overdriving).
	** NOTE TO SPECIFIER ** Ballast application. Delete if not required.
		C.	Ballast Applied:
			1.	Place membrane so that wrinkles and buckles are not formed. Any wrinkles or buckles shall be removed from the sheet prior to permanent attachment. Roof membrane shall be mechanically fastened immediately after it is rolled out, followed by welding to adjacent sheets.
			2.	Overlap roof membrane a minimum of 3 inches (76 mm) for side laps and 3 inches (76 mm) for end laps.
			3.	Install membrane so that the side laps run across the roof slope lapped towards drainage points.
			4.	All exposed sheet corners shall be rounded a minimum of 1 inch (25 mm).
			5.	Use full width rolls in the field of roof and perimeter of the roof.
			6.	Membrane laps shall be heat-welded together. All welds shall be continuous, without voids or partial welds. Welds shall be free of burns and scorch marks.
			7.	Weld width shall be a minimum of 1-1/2 inches (38 mm) in width for automatic machine welding. Weld width shall be a minimum 2 inches (51 mm) in width for hand welding.
			8.	Supplemental membrane attachment is required at the base of all walls and curbs, and where the angle of the substrate changes by more than ten (10) degrees (2 inches (51 mm) in 12 inches (305 mm)). Roofing membrane shall be secured to the structural deck with appropriate Drill-Tec screws and plates spaced every 12 inches (305 mm) o.c. The screws and plates shall be installed no less than 1/2 inch (13 mm) from the membrane edge. Alternatively, the roofing membrane may be turned up the vertical plane a minimum of 3 inches (76 mm) and secured with screws and termination bar fastener spacing is the same as is used for in-lap attachment. The termination bar shall be installed within 1-1/2 inches (38 mm) to 2 inches (51 mm) of the plane of the roof membrane, with a minimum of 1 inch (25 mm) of membrane extending above the termination bar.
			9.	Supplemental membrane attachment to the structural deck is required at all penetrations. Roofing membrane shall be secured to the deck with appropriate Drill-Tec screws and membrane plates.
			10.	Fasteners shall be installed to achieve the proper embedment depth. Install fasteners without lean or tilt.
			11.	Install fasteners so that the plate or termination bar is drawn down tightly to the membrane surface. Properly installed fasteners will not allow the plate or termination bar to move (underdriving), but will not cause wrinkling of the membrane (overdriving).
	** NOTE TO SPECIFIER ** OPTION 1 ~ GENERAL - ARCHITECT. Delete if not required.
	3.12	FLASHINGS
		A.	All penetrations shall be at least 2 feet (610 mm) from the curbs, walls, and edges to provide adequate space for proper flashing.
		B.	Flash all perimeter, curb, and penetration conditions with coated metal, membrane flashing, and flashing accessories as appropriate to the site condition.
		C.	All coated metal and membrane flashing corners shall be reinforced with preformed corners or non-reinforced membrane.
		D.	Hot-air weld all flashing membranes, accessories, and coated metal. A minimum 2” wide hand weld or minimum 1 - 1/2" automatic machine weld is required.
		E.	Non-coated metal edge details shall be installed in accordance with current EverGuard construction details and requirements.
	** NOTE TO SPECIFIER ** Delete if 20 year warranty not required. Consult the EverGuard Application and Specifications Manual or GAFMC Contractor Services for more information on specific construction details.
		F.	Twenty (20) year EverGuard systems require the use of coated metal edges where applicable. Bonding adhesive and/or cover tape is not acceptable.
		G.	All cut edges of reinforced membrane shall be sealed with EverGuard PVC Cut Edge Sealant.
	** NOTE TO SPECIFIER ** OPTION 2 ~ DETAILED - CONTRACTOR. Delete if not required.
	3.13	FLASHINGS
		A.	General:
			1.	All penetrations shall be at least 24 inches (610 mm) from curbs, walls, and edges to provide adequate space for proper flashing.
			2.	Flash all perimeter, curb, and penetration conditions with coated metal, membrane flashing, and flashing accessories as appropriate to the site condition.
			3.	All coated metal and membrane flashing corners shall be reinforced with preformed corners or non-reinforced membrane.
			4.	Hot-air weld all flashing membranes, accessories, and coated metal. A minimum 2 inches (51 mm) wide (hand welder) weld is required.
	** NOTE TO SPECIFIER ** Delete if not required.
		B.	Coated Metal Flashings:
			1.	Coated metal flashings shall be formed in accordance with current EverGuard construction details and SMACNA guidelines.
			2.	Coated metal sections used for roof edging, base flashing and coping shall be butted together with a 1/4 inch (6 mm) gap to allow for expansion and contraction. Hot-air weld a 6 inches (152 mm) wide reinforced membrane flashing strip to both sides of the joint, with approximately 1 inch (25 mm) on either side of the joint left un-welded to allow for expansion and contraction. 2 inches (51 mm) wide aluminum tape can be installed over the joint as a bond-breaker, to prevent welding in this area.
			3.	Coated metal used for sealant pans, scupper inserts, corners of roof edging, base flashing and coping shall be overlapped or provided with separate metal pieces to create a continuous flange condition, and pop-riveted securely. Hot-air weld a 6 inch (152 mm) wide reinforced membrane flashing strip over all seams that will not be sealed during subsequent flashing installation.
			4.	Provide a 1/2 inch (13 mm) hem for all exposed metal edges to provide corrosion protection and edge reinforcement for improved durability.
			5.	Provide a 1/2 inch (13 mm) hem for all metal flange edges whenever possible to prevent wearing of the roofing and flashing membranes at the flange edge.
			6.	Coated metal flashings shall be nailed to treated wood nailers or otherwise mechanically attached to the roof deck, wall or curb substrates, in accordance with construction detail requirements.
	** NOTE TO SPECIFIER ** Delete if not required.
		C.	Reinforced Membrane Flashings:
			1.	The thickness of the flashing membrane shall be the same as the thickness of the roofing membrane.
			2.	Membrane flashing may either be installed loose or fully adhered to the substrate surface in accordance with "Construction Detail Requirements".
			3.	Apply bonding adhesive at a rate resulting in 60 square feet/gallon (1.4 sqm/l) of finished roofing material for solvent-based bonding adhesives, and at a rate of 125 square feet/gallon (3 sqm/l) of finished roofing material for water-borne bonding adhesive. Apply bonding adhesive to both the underside of the membrane and the substrate surface at 120 square feet per gallon (2.8 sqm/l) (Solvent Based) and 250 square feet per gallon (6 sqm/l) (Water Based). A greater quantity of bonding adhesive may be required based upon the substrate surface condition. The bonding adhesive shall be allowed to dry until tacky to the touch before flashing membrane application.
			4.	Apply the adhesive only when outside temperature is above 40 degree F (4.4 degree C). Recommended minimum application temperature is 50 degree F (10 degree C) to allow for easier adhesive application.
			5.	The membrane flashing shall be carefully positioned prior to application to avoid wrinkles and buckles.
	** NOTE TO SPECIFIER ** Delete if not required.
		D.	Un-reinforced Membrane Flashings:
			1.	Un-reinforced membrane is used to field-fabricate penetration or reinforcement flashings in locations where preformed corners and pipe boots cannot be properly installed.
			2.	Penetration flashings constructed of un-reinforced membrane are typically installed in two sections, a horizontal piece that extends onto the roofing membrane and a vertical piece that extends up the penetration. The two pieces are overlapped and hot-air welded together.
			3.	The un-reinforced membrane flashing shall be adhered to the penetration surface. Apply bonding adhesive at a rate resulting in 60 square feet/gallon (1.4 sqm/l) of finished roofing material for solvent-based bonding adhesives, and at a rate of 125 square feet/gallon (3 sqm/l) of finished roofing material for water-borne bonding adhesive. Apply bonding adhesive to both the underside of the membrane and the substrate surface at 120 square feet per gallon (2.8 sqm/l) (Solvent Based) and 250 square feet per gallon (6 sqm/l) (Water Based). The bonding adhesive shall be allowed to dry until tacky to the touch before flashing membrane application.
	** NOTE TO SPECIFIER ** Delete if not required.
		E.	Self-Adhered Membrane Flashings:
			1.	Install self-adhering membrane flashings according to all applicable GAFMC construction details.
			2.	Apply flashing membrane only when outside temperature is above 40 degrees F. Recommended minimum application temperature is 50 degrees F to allow for improved adhesive performance.
			3.	The membrane flashing shall be carefully positioned prior to removal of release film to avoid wrinkles and buckles.
			4.	Adhere flashing membrane to the walls by removing the release film. Broom or roll all walls. All seams shall be rolled-in with a silicone roller.
	** NOTE TO SPECIFIER ** Delete if not required.
		F.	Roof Edges:
			1.	Roof edge flashings are applicable for gravel stop and drip edge conditions as well as for exterior edges of parapet walls.
			2.	Flash roof edges with coated metal flanges nailed 4 inches (101 mm) o.c. to pressure-treated wood nailers. Hot-air weld roof membrane to metal flanges.
			3.	When the fascia width exceeds 4 inches (101 mm), coated metal roof edging shall be attached with a continuous cleat to secure the lower fascia edge. The cleat shall be secured to the building no less than 12 inches (305 mm) o.c.
			4.	Alternatively, roof edges may be flashed with a 2-piece snap on fascia system, adhering the roof membrane to a metal cant with bonding adhesive and face nailing the membrane 8 inches (203 mm) on center prior to installing a snap-on fascia (MA-206, 207).
			5.	Flash roof edge scuppers with a coated metal insert that is mechanically attached to the roof edge and integrated as a part of the metal edging.
	** NOTE TO SPECIFIER ** Delete if not required.
		G.	Parapet and Building Walls:
			1.	Flash walls with EverGuard PVC membrane adhered to the substrate with bonding adhesive, loose applied (Less than 18 inches (457 mm) in height) or with coated metal flashing nailed 4 inches (101 mm) on center to pressure-treated wood nailers.
			2.	Secure membrane flashing at the top edge with a termination bar. Water Block shall be applied between the wall surface and membrane flashing underneath all exposed termination bars. Exposed termination bars shall be mechanically fastened 8 inches (203 mm) on center; termination bars that are counter flashed shall be fastened 12 inches (305 mm) on center.
			3.	Roof membrane shall be mechanically attached along the base of walls with screws and plates (deck securement) or screws and inverted termination bar (wall securement) at the following rate:
				a.	Mechanically Attached Systems:Per in-lap on center spacing, with a 12 inches (305 mm) maximum.
				b.	Fully Adhered Systems:12 inches (305 mm) on center.
				c.	Ballast Applied Systems:8 inches (203 mm) on center.
			4.	All coated metal wall flashings and loose applied membrane flashings shall be provided with separate metal counterflashings, or metal copings.
			5.	Metal counterflashings may be optional with fully adhered flashings depending on guarantee requirements. Exposed termination bars shall be sealed with EverGuard caulking.
			6.	Flash wall scuppers with a coated metal insert that is mechanically attached to the wall and integrated as part of the wall flashing.
	** NOTE TO SPECIFIER ** Delete if not required.
		H.	Curbs and Ducts:
			1.	Flash curbs and ducts with EverGuard PVC membrane adhered to the curb substrate with bonding adhesive, loose applied (Less than 18 inches (457 mm) in height) or with coated metal flashing nailed 4 inches (101 mm) on center to pressure-treated wood nailers.
			2.	Secure membrane flashing at the top edge with a termination bar. Water Block shall be applied between the curb/duct surface and membrane flashing underneath all termination bars. Exposed termination bars shall be mechanically fastened every 8 inches (203 mm) o.c.; termination bars that are counter flashed shall be fastened 12 inches (305 mm) on center.
			3.	Roof membrane shall be mechanically attached along the base of walls with screws and plates (deck securement) or screws and inverted termination bar (wall securement) at the following rate:
				a.	Mechanically Attached Systems:Per in-lap on center spacing, with a 12 inches (305 mm) maximum.
				b.	Fully Adhered Systems:12 inches (305 mm) on center.
				c.	Ballast Applied Systems:8 inches (203 mm) on center.
			4.	All coated metal curb flashings and loose applied membrane flashings shall be provided with separate metal counterflashings, or metal copings.
			5.	Metal counterflashings may be optional with fully adhered flashings depending on guarantee requirements. Exposed termination bars shall be sealed with EverGuard caulking.
	** NOTE TO SPECIFIER ** Delete if not required.
		I.	Roof Drains:
			1.	Roof drains shall be fitted with compression type clamping rings and strainer baskets. Original-type cast iron and aluminum drains, as well as retrofit-type cast iron, aluminum or molded plastic drains are acceptable.
			2.	Roof drains shall be provided with a minimum 36 inches (914 mm) by 36 inches (914 mm) sump. Slope of tapered insulation within the sump shall not exceed 4 inches (102 mm) in 12 inches (305 mm).
			3.	Extend the roofing membrane over the drain opening. Locate the drain and cut a hole in the roofing membrane directly over the drain opening. Provide a 1/2 inch (13 mm) of membrane flap extending past the drain flange into the drain opening. Punch holes through the roofing membrane at drain bolt locations.
			4.	For cast iron and aluminum drains, the roofing membrane shall be set in a full bed of water block on the drain flange prior to securement with the compression clamping ring. Typical water block application is one 10.5 ounce (315 g) cartridge per drain.
			5.	Lap seams shall not be located within the sump area. Where lap seams will be located within the sump area, a separate roof membrane drain flashing a minimum of 12 inches (305 mm) larger than the sump area shall be installed. The roof membrane shall be mechanically attached 12 inches (305 mm) on center around the drain with screws and plates. The separate roof drain flashing shall be heat welded to the roof membrane beyond the screws and plates, extended over the drain flange, and secured as above.
			6.	Tighten the drain compression ring in place.
	** NOTE TO SPECIFIER ** Delete if not required.
		J.	Expansion Joints
			1.	The membrane shall be mechanically fastened (or fully adhered based on system) along edge of expansion joint opening with appropriate Drill-Tec? fasteners and plates within ¼” to ½” of the membrane edge 12” O.C
			2.	When expansion joint is on curbs, the reinforced flashing must be bonded to curb face with Everguard Bonding Adhesive and membrane on top of curb face must be nailed 12” O.C. with deformed shank roofing nail with 3/8” wide head..
			3.	The expansion joint cover bellows shall be at least 1.5 times the expansion joint opening.
			4.	Alternately, expansion joints may be field fabricated
	** NOTE TO SPECIFIER ** SEPARATION MAT. Delete if ballast application not required.
	3.14	SEPARATION MAT
		A.	Apply a 3 oz poly separation slip-sheet above the roofing membrane under all ballasted installations where existing stone ballast is reused or where the underside of the paver is smooth and regular, and has integral drainage channels.
		B.	Apply a 6 oz poly cushioning slip-sheet above the roofing membrane under all paver applications where pavers are used as walkways, work surfaces, or as heavyweight perimeter ballast.
		C.	Loose-lay separation mat over the membrane so that wrinkles and buckles are not formed. Overlap separation mat a minimum of 6 inches (153 mm) for side and end laps, and immediately install ballast or pavers over the loose laid separation mat.
	** NOTE TO SPECIFIER ** INTERLOCKING PAVERS. Delete if not required.
	3.15	INTERLOCKING PAVERS
		A.	Install interlocking concrete pavers in accordance with requirements determined by the most current revision of ASCE 7, and the paver manufacturer's recommendations for stagger and interlock.
		B.	Utilize perimeter securement of interlocking pavers and/or paver clips in accordance with the paver manufacturer's requirements.
	** NOTE TO SPECIFIER ** NON-INTERLOCKING PAVERS. Delete if not required.
	3.16	NON-INTERLOCKING PAVERS
		A.	Install non-interlocking concrete pavers in accordance with requirements determined by the most current revision of ASCE 7 and the paver manufacturer's requirements.
		B.	Utilize perimeter securement of non-interlocking pavers in accordance with the paver manufacturer's requirements.
	** NOTE TO SPECIFIER ** STONE BALLAST. Delete if not required.
	3.17	STONE BALLAST
		A.	Install stone ballast in accordance with requirements determined by the most current revision of ANSI RP-4.
			1.	Minimum ballast application rate for #4 nominal 1-1/2 inches (38 mm) ballast is 10 lb per sf (50 kg/sm).
			2.	Minimum ballast application rate for #2 nominal 2-1/2 inches (63 mm) ballast is 13 lb per sf (65 kg/sm).
	** NOTE TO SPECIFIER ** TRAFFIC PROTECTION. Delete if not required.
	3.18	TRAFFIC PROTECTION
		A.	Install walkway pads/rolls at all roof access locations and other designated locations including roof-mounted equipment work locations and areas of repeated rooftop traffic.
		B.	Walkway pads shall be spaced 2 inches (51 mm) apart to allow for drainage between the pads.
	** NOTE TO SPECIFIER ** Delete application method not required.
		C.	Fully adhere walkway pads/rolls to the roof membrane with solvent-based bonding adhesive, applied at the rate of 1 gal per 100 sf (0.42 l/sm) to both the walkway and roof membrane surfaces. Press walkway in position once adhesive is tacky to the touch.
		D.	Hot-air-weld walkway pads/rolls to the roof membrane surface continuously around the perimeter of the pad/roll.
	3.19	ROOF PROTECTION
		A.	Protect all partially and fully completed roofing work from other trades until completion.
		B.	Whenever possible, stage materials in such a manner that foot traffic is minimized over completed roof areas.
		C.	When it is not possible to stage materials away from locations where partial or complete installation has taken place, temporary walkways and platforms shall be installed in order to protect all completed roof areas from traffic and point loading during the application process.
		D.	Temporary tie-ins shall be installed at the end of each workday and removed prior to commencement of work the following day.
	3.20	CLEAN-UP
		A.	All work areas are to be kept clean, clear and free of debris at all times.
		B.	Do not allow trash, waste, or debris to collect on the roof. These items shall be removed from the roof on a daily basis.
		C.	All tools and unused materials shall be collected at the end of each workday and stored properly off of the finished roof surface and protected from exposure to the elements.
		D.	Dispose of or recycle all trash and excess material in a manner conforming to current EPA regulations and local laws.
		E.	Properly clean the finished roof surface after completion, and make sure the drains and gutters are not clogged.
		F.	Clean and restore all damaged surfaces to their original condition.
	END OF SECTION