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	SECTION 07570
	FOAMED-IN-PLACE COATED ROOF SYSTEM
	Copyright 2009 - 2011 ARCAT, Inc. - All rights reserved
	** NOTE TO SPECIFIER ** NCFI Polyurethanes; Foamed-In-Place Building Insulating, Roofing Systems and Specialty Insulation products. This section is based on the products of NCFI Polyurethanes, which is located at: Mount Airy Industrial Park P. O. Box 1528 Mount Airy, NC 27030-1528 Toll Free Tel: 800-346-8229 Tel: 336-789-9161 Email: request info Web: www.ncfi.com [ Click Here ] for additional information. NCFI formulates and manufactures foam-in-place polyurethane foam systems. NCFI nationally sells and services foam mixing and dispensing equipment providing end-users with one source for their foam needs. NCFI was organized in 1964 by Dr. H.W. Bradley, a research chemist, and Barnhardt Manufacturing Company, a leading manufacturer of fiber cushioning materials whose founding dates back to 1900. Soon after its organization, NCFI had earned a reputation as a quality manufacturer of flexible polyurethane foam for the bedding and furniture industry. In 1967, NCFI began formulating foam-in-place systems for insulating cold storage buildings. NCFI expanded the product line with development of highly successful systems for roofing applications, multiple types of commercial and residential insulation, taxidermy, specialty moldings, and marine applications. NCFI provides equipment and application training, engineering expertise for specifications and designs, and a professionally trained contractor base for spray foam applications. NCFI's R&D center, with full development and testing capabilities, is unique among spray polyurethane foam systems suppliers in the United States. This specification includes NCFI's EnduraPlus™ Roofing System that provides a durable, weather-resistant solution lightweight roof construction. This seamless spray-in-place rigid Polyurethane Foam (SPF) plus an integrated protective layer of elastomeric coating improves your roof's overall structural integrity and strength. The Spray Polyurethane Foam and coating system weighs less than a pound per square foot, making it an excellent choice for a variety of roof substrates.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Delete items below not required for project.
		A.	Foamed-In-Place Coated Roof System.
		B.	Foamed-In-Place Coated Roof Replacement System.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
		A.	Section 07260 - Vapor Retarders.
		B.	Section 07270 - Air Barriers.
		C.	Section 07212 - Board Insulation: Supplementary rigid insulation boards.]
		D.	Section 07214 - Foamed-In-Place Insulation: Interior applications.
		E.	Section 07620 - Sheet Metal Flashing and Trim: Perimeter flashings; Counterflashings to roof penetrations.
		F.	Section 07710 - Manufactured Roof Specialties: Counterflashings, gravel stops, fascias and expansion joints.
		G.	Section 07900 - Joint Sealers.
	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.	ASTM C 208 - Standard Specification for Cellulosic Fiber Insulating Board.
		B.	ASTM C 518 - Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus.
		C.	ASTM C 1371 - Standard Test Method for Determination of Emittance of Materials Near Room Temperature Using Portable Emissometers
		D.	ASTM C 1549 - Standard Test Method for Determination of Solar Reflectance Near Ambient Temperature Using a Portable Solar Reflectometer
		E.	ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.
		F.	ASTM D 471 - Standard Test Method for Rubber Property-Effect of Liquids.
		G.	ASTM D 522 - Standard Test Methods for Mandrel Bend Test of Attached Organic Coatings.
		H.	ASTM D 603 - Standard Specification for Aluminum Silicate Pigments (Hydrous).
		I.	ASTM D 624 - Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers.
		J.	ASTM D 794 - Practice for Determining Permanent Effect of Heat on Plastics.
		K.	ASTM D 1621 - Standard Test Method for Compressive Properties Of Rigid Cellular Plastics.
		L.	ASTM D 1622 - Standard Test Method for Apparent Density of Rigid Cellular Plastics.
		M.	ASTM D 1653 - Standard Test Methods for Water Vapor Transmission of Organic Coating Films.
		N.	ASTM D 2240 - Standard Test Method for Rubber Property-Durometer Hardness.
		O.	ASTM D 2370 - Standard Practice for Calculating Viscosity Index From Kinematic Viscosity at 40 and 100 degreesC
		P.	ASTM D 4798 - Standard Practice for Accelerated Weathering Test Conditions and Procedures for Bituminous Materials (Xenon-Arc Method).
		Q.	ASTM D 6083 - Standard Specification for Liquid Applied Acrylic Coating Used in Roofing.
		R.	ASTM D 6226 - Standard Test Method for Open Cell Content of Rigid Cellular Plastics.
		S.	UL-580 - Tests for Uplift Resistance of Roof Assemblies.
		T.	UL 790 - Standard Test Methods for Fire Tests of Roof Coverings.
		U.	UL 1256 - Fire Test of Roof Deck Constructions.
		V.	UL-2218 - Impact Resistance of Prepared Roof Covering Materials.
	** NOTE TO SPECIFIER ** Edit the following paragraphs as required to meet local code and insurance underwriters requirements. Contact manufacturer for additional information.
	1.4	DESIGN / PERFORMANCE REQUIREMENTS
		A.	Underwriters Laboratories, Inc. UL 790: Class A Fire Hazard Classification.
		B.	Underwriters Laboratories, Inc., Roofing Materials and System Directory: Wind uplift resistance of spray foam insulation rated at 160-165 psf over approved construction.
		C.	Factory Mutual Approval subject to the conditions of Approval as a spray foam roof insulation system for use in Class 1 roof construction as described in the current edition of the FM Approval Guide. Windstorm rated 1-60 to 1-180 (depending on construction).
	1.5	SUBMITTALS
		A.	Submit under provisions of Section 01300.
		B.	Product Data: Manufacturer's data sheets on each product to be used, including:
			1.	Preparation instructions and recommendations.
			2.	Storage and handling requirements and recommendations.
			3.	Installation methods.
		C.	Manufacturer's Certificates: Certify products meet or exceed specified requirements.
	1.6	QUALITY ASSURANCE
		A.	Manufacturer Qualifications: Company specializing in manufacturing urethane foam products and systems of this section with minimum ten years documented experience.
		B.	Installer Qualifications: Company specializing in performing Work of this section with minimum three years documented experience.
			1.	Installer must be an NCFI Gold Star certified Tier One application contractor or have SPF contractor's accreditation and manufacturer's certification for the application.
			2.	Installer shall provide the equipment required by the manufacturer for proper installation including high pressure plural component proportioning pump, heated hoses of suitable length, spray gun, drum pumps or other material feeding system, and other ancillary equipment required for the Work.
	** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
		C.	Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
			1.	Finish areas designated by Architect.
			2.	Do not proceed with remaining work until workmanship and application methods are approved by Architect.
			3.	Refinish mock-up area as required to produce acceptable work.
			4.	Accepted mock-ups shall be comparison standard for remaining Work.
	1.7	DELIVERY, STORAGE, AND HANDLING
		A.	Store products under cover in manufacturer's unopened and labeled packaging until ready for installation.
		B.	Storage: Store materials between 40 degrees F (4 degrees C) and 100 degrees F (38 degrees C) with careful handling to prevent damage to products. If conditions exceed these ranges, special consideration in storage must be taken. Do not store at high temperatures in direct sunlight.
		C.	Protection: Protect all materials from freezing and other damage during transit, handling, storage, and installation.
		D.	Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
	1.8	PRE-INSTALLATION MEETINGS
		A.	Convene pre-installation meeting a minimum of two weeks prior to commencing work of this section.
		B.	Attendance: Architect, Contractor and roof system applicator.
		C.	Agenda: Review installation sequence and scheduling.
	1.9	COORDINATION
		A.	Ensure that the installation of products of this section are coordinated with affected trades to prevent interruption of construction progress.
	1.10	PROJECT CONDITIONS
		A.	Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.
		B.	Do not install spray polyurethane foam during precipitation or when precipitation is imminent. Do not install when the ambient temperature is less than 50 degrees F (10 degrees C).
		C.	Monitor ambient humidity before and during the application of foam with a psychrometer; wet bulb measurements must not exceed the maximums for a given dry bulb measurement as defined by NCFI's Applicator Bulletin on Wet Bulb/Dry Bulb Thermometer.
		D.	Wind speeds during application shall not exceed 15 mph. Use windscreens to avoid overspray.
	1.11	WARRANTY
	** NOTE TO SPECIFIER ** Select one of the following warrantee paragraphs and delete the one not required. Warrantee required that Installer must be an NCFI Gold Star certified Tier One application contractor.
		A.	Provide manufacturer's labor and materials 5 year limited warranty covering failure to prevent penetration of water due to defective foam and coating material. Warrantee shall be provided with provisions for an optional 5 year warranty extension.
		B.	Provide manufacturer's labor and materials 10 year limited warranty covering failure to prevent penetration of water due to defective foam and coating material. Warrantee shall be provided with provisions for an optional 10 year warranty extension.
	PART 2	PRODUCTS
	2.1	MANUFACTURERS
		A.	Acceptable Manufacturer: NCFI Polyurethanes, which is located at: Mount Airy Industrial Park P. O. Box 1528 ; Mount Airy, NC 27030-1528; Toll Free Tel: 800-346-8229; Tel: 336-789-9161; Email: request info; Web: www.ncfi.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 ** This specification does not extensively outline procedures for preparation and finishing of drains, vents, ducts, flashings, parapet walls, etc. This work should be coordinated by the Architect and specified and indicated properly on the Drawings. In most cases, the self- flashing attributes of the SPF will be utilized without the need for additional flashing materials. In any case, the SPF should never be applied in a manner that traps moisture or forces moisture to migrate underneath the system. Any required sheet metal work shall be in accordance with the latest editions of SMACNA and/or NRCA details.
	2.2	POLYURETHANE FOAM
		A.	Spray polyurethane foam shall be NCFI Polyurethanes system 10-010.
			1.	Physical properties of Cured Foam:
				a.	Polyurethane foam shall contain EPA-approved 245fa blowing agent and meet U.S. non-ozone-depleting requirements of the U.S. EPA mandate and International Montreal Protocol. No polyurethane foam with phased-out HCFC 141b blowing agent is acceptable.
				b.	Minimum in-place density: 2.7 lb/cf when tested in accordance with ASTM D 1622.
				c.	Compressive strength, parallel to rise: Minimum 54 psi when tested in accordance with ASTM D 1621.
				d.	Moisture Vapor Transmission: 1.5 perms per inch thickness when tested in accordance with ASTM D 1653.
				e.	Closed Cell content: Greater than 95 percent when tested in accordance with ASTM D 6226.
				f.	R-Value: 6.3 hr/sf/degrees F/Btu minimum at 1 inch thick when tested in accordance with ASTM C 518.
				g.	Dimensional Stability: 10.5 percent.
				h.	Maximum Service Temperature: 180 degrees F.
				i.	Flame Spread: Less than 75 when tested in accordance with ASTM E 84 for 2 inch (51 mm) thickness.
	2.3	ACRYLIC COATING SYSTEM
	** NOTE TO SPECIFIER ** Select one of the following acrylic or silicone coating paragraphs and delete the ones not required. Contact the manufacturer for recommendations for the selection and application of the finished coating required.
		A.	Standard acrylic coating: EnduraTech R (70-012) 100 percent acrylic elastomeric coating designed specifically for use over new spray polyurethane foam (SPF) roofing systems, or for recoating existing SPF roofing systems. Meets the requirements of ASTM D 6083.
			1.	Properties Typical Values:
				a.	Solids by Volume: 58 percent.
				b.	Recoat Time: 2-8 hours.
				c.	Clean-Up: Water.
				d.	Elongation 210 percent when tested in accordance with ASTM D 2370.
				e.	Tensile Strength 350 psi when tested in accordance with ASTM D 2370.
				f.	Low Temperature Flexibility: Passes 1/2 inch mandrel bend when tested in accordance with ASTM D 522.
				g.	Permeance: 7.03 perms at 20 mils when tested in accordance with ASTM D 1653.
				h.	Tear Resistance: 63 psi when tested in accordance with ASTM D 624.
				i.	Adhesion: 3.4 psi when tested in accordance with ASTM D 794 and ASTM D 603.
				j.	Hardness: 55-65 Shore A when tested in accordance with ASTM D 2240.
				k.	Accelerated Weathering: No cracking, fading, or checking at 1000 hours when tested in accordance with ASTM D 4798.
				l.	Water Swelling: 5.14 percent when tested in accordance with ASTM D 471.
				m.	Solar Reflectance: 85.8 percent when tested in accordance with ASTM C 1549.
				n.	Thermal Emittance: 0.88 when tested in accordance with ASTM C 1371.
			2.	Meets the following:
				a.	UL 790 Class A (NC) (C-15/32)
				b.	UL 790 Class B (C-15/32)
				c.	UL 1256 Class 90
				d.	UL 580 165 psf
				e.	UL 2218 Class 1
				f.	ICC Evaluation Services Legacy Report ER-5979
			3.	Colors:
	** NOTE TO SPECIFIER ** Select one of the following color paragraphs and delete the ones not required.
				a.	White.
				b.	Gray.
				c.	Dark Gray.
				d.	Tan.
				e.	Santa Fe Tan.
		B.	Quickset acrylic coating: EnduraTech Q (70-014) 100 percent acrylic elastomeric coating designed specifically for use over new spray polyurethane foam (SPF) roofing systems, or for recoating existing SPF roofing systems. Meets the requirements of ASTM D 6083
			1.	Properties Typical Values:
				a.	Solids by Volume: 58 percent.
				b.	Recoat Time: 2-8 hours.
				c.	Clean-Up: Water.
				d.	Elongation 210 percent when tested in accordance with ASTM D 2370.
				e.	Tensile Strength 350 psi when tested in accordance with ASTM D 2370.
				f.	Low Temperature Flexibility: Passes 1/2 inch mandrel bend when tested in accordance with ASTM D-522.
				g.	Permeance: 7.03 perms at 20 mils when tested in accordance with ASTM D 1653.
				h.	Tear Resistance: 63 psi when tested in accordance with ASTM D 624.
				i.	Adhesion: 3.4 psi when tested in accordance with ASTM D 794 and ASTM D.603.
				j.	Hardness: 55-65 Shore A when tested in accordance with ASTM D-2240
				k.	Accelerated Weathering: No cracking, fading, or checking at 1000 hours when tested in accordance with ASTM D 4798.
				l.	Water Swelling: 5.14 percent when tested in accordance with ASTM D 471.
			2.	Meets the following:
				a.	UL 790 Class A (NC) (C-15/32)
				b.	UL 790 Class B (C-15/32)
				c.	UL 1256 Class 90
				d.	UL-580 165 psf
				e.	UL-2218 Class 1
				f.	ICC Evaluation Services Legacy Report ER-5979
			3.	Colors:
	** NOTE TO SPECIFIER ** Select one of the following color paragraphs and delete the ones not required.
				a.	White.
				b.	Gray.
				c.	Dark Gray.
				d.	Tan.
				e.	Santa Fe Tan.
		C.	High tensile acrylic coating: EnduraTech HT (70-015) 100 percent acrylic elastomeric coating designed specifically for use over new spray polyurethane foam (SPF) roofing systems, or for recoating existing SPF roofing systems. Meets the requirements of ASTM D 6083
			1.	Properties Typical Values:
				a.	Solids by Volume: 57 percent.
				b.	Recoat Time: 4-8 hours.
				c.	Clean-Up: Water.
				d.	Elongation 450 percent at 75 degrees F and 100 percent at 0 degrees F when tested in accordance with ASTM D 2370.
				e.	Tensile Strength 670 psi at 75 degrees F and 2100 psi at 0 degrees F when tested in accordance with ASTM D 2370.
				f.	Low Temperature Flexibility: Passes 1/8 inch mandrel bend at minus 25 degrees F when tested in accordance with ASTM D-522.
				g.	UV Reflectance: 86 percent when tested in accordance with ASTM E 903.
			2.	Meets the following:
				a.	UL 790 Class A (NC) (C-15/32).
				b.	UL 1256 Class 90.
				c.	UL-580 165 psf.
				d.	UL-2218 Class 1.
			3.	Colors:
	** NOTE TO SPECIFIER ** Select one of the following color paragraphs and delete the ones not required.
				a.	White.
				b.	Gray.
				c.	Dark Gray.
				d.	Tan.
				e.	Santa Fe Tan.
		D.	Silicone Coating: EnduraTech Silicone (70-025) single component moisture-cure elastomeric coating for use over SPF and various substrates. Once cured this liquid applied silicone coating provides a durable, seamless, flexible, waterproof membrane that resists lateral movement, shear and will allow for normal expansion and contraction.
			1.	Properties Typical Values:
				a.	Solids by Volume: 65 plus or minus 2 percent.
				b.	Cure Time: 6 hrs to touch; 2 hrs tack free; 30 minute skin over.
				c.	Flash Point: 104 degrees F.
				d.	Elongation 150 percent plus or minus 50 percent.
				e.	Permeability: 3.9 perms
				f.	Water Absorption: N/A
				g.	Adhesion: Exceeds Tensile
				h.	Hardness 55 Shore A
				i.	Clean-up: Solvent Mineral Spirits
				j.	Service Temp: minus 50 degrees F to 200 degrees F.
				k.	Tensile Strength 500 psi plus or minus 25 psi.
	2.4	ACCESSORIES
	** NOTE TO SPECIFIER ** The following four paragraphs are for use on metal deck surfaces only. Select the paragraphs required. Delete if not required.
		A.	Underlayment: High density fiber board 1/2 inch (12.5 mm) minimum thickness meeting ASTM C 208.
		B.	Mesh: HILCO Fiberglass Fabric, asphalt treated, 20 by 10 count, fiberglass mesh.
		C.	Spray Polyurethane Foam Adhesive: Spray-applied, polyurethane foam adhesives, use the following: NCFI Spray Adhesive 13-003
		D.	Fasteners for use on steel decks will be OMG Roof Insulation Fasteners # 12-11 or equivalent with 3 inch (76 mm) diameter galvanized plates.
		E.	Primers: Provide primers as required for application conditions.
			1.	Primer for Foam-to-Foam NCFI ENDURATECH AP
			2.	Primer for Foam-to-Porous Surfaces NCFI ENDURATECH XP
			3.	Foam to Other Surfaces Contact NCFI for specific recommendations.
	PART 3	EXECUTION
	3.1	EXAMINATION
		A.	Do not begin installation until substrates have been properly prepared.
		B.	If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
	3.2	PREPARATION
		A.	Clean surfaces thoroughly prior to installation.
		B.	Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
	** NOTE TO SPECIFIER ** Select one of the following roof deck paragraphs as required for project conditions. Delete the paragraphs not required.
		C.	Wood Deck:
			1.	Seal joints of plywood with tape.
			2.	Fill knot holes with latex filler.
			3.	Remove materials or substances interfering with total adhesion of foam insulation to substrate.
			4.	Mask off adjacent surfaces not scheduled to receive foam.
		D.	Concrete Deck:
			1.	Concrete deck must be fully cured and primed. Lightweight concrete decks are not approved for direct application of polyurethane foam.
			2.	Fill surface honeycomb and variations with latex filler.
			3.	Remove materials or substances interfering with total adhesion of foam insulation to substrate.
			4.	Mask off adjacent surfaces not scheduled to receive foam.
		E.	Metal Deck:
	** NOTE TO SPECIFIER ** Select one of the following paragraphs to prepare metal deck to achieve a flat, final foam surface. Delete the paragraphs not required.
			1.	Underlayment Board Method
				a.	Secure the underlayment sheets to the steel deck using one of the following techniques:
					1)	Spray apply NCFI Spray Adhesive 13-003 to the metal deck and install the underlayment sheets into the adhesive before it has reached its tack free state.
					2)	Mechanically fasten underlayment sheets to the steel deck using eleven fasteners per 4 by 8 foot sheet per attached Fastener Pattern.
				b.	Spray the foam onto the dry surface of the underlayment.
			2.	Flute Filling Method
				a.	Fill the steel deck flutes with spray-applied polyurethane foam, avoiding spraying onto the deck flanges.
				b.	Remove excessive foam that is higher than the height of the flange.
				c.	Spray foam onto the deck and the filled deck flutes to achieve a relatively flat finished foam surface.
			3.	Mesh Method
				a.	Apply fabric mesh specified. Roll out the fabric across the roof deck, spanning the flutes. Pull taut to the deck surface.
				b.	Secure the mesh in place with small amounts of spray foam or approved fasteners.
				c.	Spray the foam onto the mesh surface.
			4.	Existing Spray Foam Roofs
				a.	Scarf off old coating down to adhered, closed-cell foam.
				b.	Allow exposed foam to dry.
				c.	Apply primer specified to scarfed, dry foam. Follow recommendations of primer manufacturer.
				d.	Apply new foam to the dry, primed foam surface.
	** NOTE TO SPECIFIER ** Select the following paragraph as required for re-roofing projects. Delete if not applicable. The Architect is responsible for determining the physical state of and the load bearing characteristics of the roof deck. The deck must be examined for rot, corrosion, and other deterioration and weak areas repaired prior to starting work. Roofs or roof sections may require tear-offs due to deck deterioration, excessive weight, existing insulation deterioration, or inability to secure loose existing substrates to the deck. Specific treatment of these roofs or roof sections depends on the deck type. Contact manufacturer for additional information.
		F.	Existing Roof System:
			1.	Remove all loose aggregate, dirt, debris, grease, and oil from the existing roof surface by power brooming, hydro-vacuuming or other appropriate means.
			2.	Loose membrane seams and other openings must be mechanically secured but may be left air and water vapor permeable.
			3.	Repair all loose, damaged, and deteriorated flashings, expansion joints, and equipment supports.
			4.	All metal surfaces to be coated or foamed must be degreased and primed.
			5.	Membrane blisters must be split and the membrane secured.
			6.	Loose laid membrane must be removed or secured.
	** NOTE TO SPECIFIER ** Select the following paragraph for application of vapor retarder if required. Existing roof membrane may be considered acceptable vapor retarder or air barrier when membrane is reasonably intact.
		G.	Install vapor retardant to specified in Section 072260.
			1.	Utilize materials or substances not interfering with total adhesion of foam insulation.
			2.	Mask off adjacent surfaces not scheduled to receive foam.
	3.3	FOAM APPLICATION
		A.	Install in accordance with manufacturer's instructions.
		B.	Fill all low areas with SPF as required to achieve proper water drainage. Apply SPF in a manner to compliment existing drainage and to eliminate the accumulation of water. Minimum foam pass thickness shall be 1/2 inch (12.5 mm).
		C.	Apply SPF to all properly prepared surfaces in minimum 1/2 inch (12.5 mm) lifts to reach the required thickness of at least 1 inch (25 mm) minimum thickness with a tolerance of plus 1/4 inch (6 mm). Flash passes of less than 1/2 inch (12.5 mm) are not acceptable.
		D.	Extend foam up walls, around pipes, and other projections a minimum of 4 inches (102 mm). Top edge of the foam shall extend all the way up the parapet wall.
		E.	In areas where obstacles do not permit normal spray techniques and the application tolerance specified above cannot be met, apply the specified minimum thickness of foam required by a method approved by the manufacturer. Completed application of foam shall be monolithic with adjacent areas of normal application.
		F.	Apply foam so that the finished surface is smooth and free of voids, pinholes, and crevices with a maximum allowable roughness defined as "coarse orange peel". Note that "Treebark", or "popcorn" surfaces are not acceptable.
	3.4	COATING SYSTEM APPLICATION
		A.	Install in accordance with manufacturer's instructions.
		B.	Apply coating system base coat only after foam has fully cured and for a minimum of 2 hours.
		C.	Apply the base coat the same day as the SPF application. In no case shall the coating be applied over UV degraded foam.
		D.	Coating system shall be sprayed with airless spray equipment or roller applied with a heavy nap roller. Apply coating in a cross hatch technique without causing runs or puddles.
		E.	Apply coating system evenly in at least 3 separate coats to achieve a minimum dry film thickness of 30 mils to 35 mils. Allow thorough dry time between each coat.
		F.	Note that application rates indicated on package labels are minimum recommendations for material usage in ideal conditions. The number of gallons per 100 square feet may need to increased due to uneven application, rough surface texture, wind conditions while spraying, or other variables.
		G.	Coating shall terminate at least 2 inches (51 mm) above or beyond the edge of applied foam in a neat and uniform manner.
		H.	No coating shall be applied if weather will not allow it to cure prior to exposure to precipitation or freezing temperatures.
	3.5	FIELD QUALITY CONTROL
	** NOTE TO SPECIFIER ** Manufacturer's Field Services for NCFI Polyurethanes warranted projects is mandatory. Delete if warrantee is not required.
		A.	Inspection by NCFI Polyurethanes' representative shall be made to verify the proper installation of the system. Any areas that do not meet the minimum standards for application as specified herein shall be corrected by the applicator. Manufacturer's inspection or verification shall not constitute acceptance of responsibility for any improper application of material.
	3.6	PROTECTION
		A.	Protect installed products until completion of project.
		B.	Touch-up, repair or replace damaged products before Substantial Completion.
	3.7	SCHEDULES
	** NOTE TO SPECIFIER ** Retain Paragraph below if required to suit project requirements. Identify products by name on the Drawings or use this paragraph to define the location of each type of material to be used. The following are some examples of schedule references. Edit as required to suit project or delete and identify products on the Drawings.
	END OF SECTION