Lapolla Industries, Inc. Coated Foamed Roofing Specification

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SECTION 07 57 00

COATED FOAMED ROOFING

** NOTE TO SPECIFIER ** Lapolla Industries, Inc.; coated foamed roofing.
This section is based on the products of Lapolla Industries, Inc., which is located at:
Intercontinental Business Park
15402 Vantage Pkwy E.
Suite 322
Houston, TX 77032
Toll Free: 888-452-7655
Fax: 281-219-4102
Email: info@lapolla.com
Web Site: www.lapolla.com
Lapolla Industries is a reliable partner and manufacturer of spray foam systems and specialty coatings. Our customers are spray applicators that promote and install better building solutions. Solutions that are achieved through the application of spray foam systems that contribute to healthier environments, the reduction of energy consumption, and sustainable buildings. In addition to focusing on our network of great customers, we want you to enjoy a relationship with an industry partner that cares about the success of your next project!

PART 1

GENERAL

1.1

SECTION INCLUDES

Coated form roofing, including primer, liquid-applied acrylic elastomeric coating, and sprayed polyurethane foam insulation.

1.2

RELATED SECTIONS

** NOTE TO SPECIFIER ** Delete sections below not relevant to this project; add others as required.

Section 07 10 00 - Dampproofing and Waterproofing.

Section 07 26 00 - Vapor Retarders.

Section 07 27 26 - Fluid-Applied Membrane Air Barriers .

Section 07 21 26 - Blown Insulation.

Section 07 21 29 - Spray Foam Insulation.

Section 07 62 00 - Sheet Metal Flashing and Trim.

Section 07 71 23 - Manufactured Gutters and Downspouts.

Section 07 90 00 - Joint Protection.

1.3

REFERENCES

** NOTE TO SPECIFIER ** Delete references from list below not required by text of edited section.

ASTM International (ASTM):

ASTM C 518 - Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus.

ASTM C 794 - Standard Test Method for Adhesion-in-Peel of Elastomeric Joint Sealants.

ASTM D 93 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester.

ASTM D 412 - Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers - Tension.

ASTM D 471 - Standard Test Method for Rubber Property - Effect of Liquids.

ASTM D 522 - Standard Test Methods for Mandrel Bend Test of Attached Organic Coatings.

ASTM D 562 - Standard Test Method for Consistency of Paints Measuring Krebs Unit (KU) Viscosity Using a Stormer-Type Viscometer.

ASTM D 624 - Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers.

ATSM D 903 - Standard Test Method for Peel or Stripping Strength of Adhesive Bonds.

10.

ASTM D 1475 - Standard Test Method For Density of Liquid Coatings, Inks, and Related Products.

11.

ASTM D 1310 - Standard Test Method for Flash Point and Fire Point of Liquids by Tag Open-Cup Apparatus.

12.

ASTM D 1621 - Standard Test Method for Compressive Properties Of Rigid Cellular Plastics.

13.

ASTM D 1622 - Standard Test Method for Apparent Density of Rigid Cellular Plastics.

14.

ASTM D 1623 - Standard Test Method for Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics.

15.

ASTM D 1638 - Methods of Testing Urethane Foam Isocyanate Raw Materials.

16.

ASTM D 1644 - Standard Test Methods for Nonvolatile Content of Varnishes.

17.

ASTM D 1653 - Standard Test Methods for Water Vapor Transmission of Organic Coating Films.

18.

ASTM D 2126 - Standard Test Method for Response of Rigid Cellular Plastics to Thermal and Humid Aging.

19.

ASTM D 2240 - Standard Test Method for Rubber Property - Durometer Hardness.

20.

ASTM D 2370 - Standard Test Method for Tensile Properties of Organic Coatings.

21.

ASTM D 2697 - Standard Test Method for Volume Nonvolatile Matter in Clear or Pigmented Coatings.

22.

ASTM D 2842 - Standard Test Method for Water Absorption of Rigid Cellular Plastics.

23.

ASTM D 2856 - Standard Test Method for Open-Cell Content of Rigid Cellular Plastics by the Air Pycnometer.

24.

ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.

25.

ASTM E 96 - Standard Test Methods for Water Vapor Transmission of Materials.

26.

ASTM G 21 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi.

Dade County Approval:

NOA#08-0402.05 - Concrete.

NOA#08-0909.05 - Recover.

NOA#08-0402.07 - Steel.

NOA#08-0402.06 - Wood.

Florida Building Code: Approval #11066.

FM Global:

Class Number 4880 - Approval Standard for Class 1 Fire Rating of Insulated Wall or Wall and Roof/Ceiling Panels, Interior Finish Materials or Coatings and Exterior Wall Systems.

Class Number 4470 - Approval Standard for Single-Ply, Polymer-Modified Bitumen Sheet, Built-Up Roof (BUR) and Liquid Applied Roof Assemblies for use in Class 1 and Noncombustible Roof Deck Construction.

California Bureau Of Home Furnishings and Thermal Insulation: Reg. NO. CA-T444 (TX).

International Code Council (ICC): ICC-ES AC-377 - Acceptance Criteria for Spray-Applied Foam Plastic Insulation.

Steel Structure Painting Council Bulletin: SP63 - Commercial Blast Cleaning.

Spray Polyurethane Foam Alliance (SFPA): SPFA Bulletin AX- 119 - MDI-Based Polyurethane Foam Systems: Guidelines for Safe Handling and Disposal.

Underwriters Laboratories Inc. (UL): File R14353 - Roofing Systems.

1.4

SUBMITTALS

Submit under provisions of Section 01 30 00 - Administrative Requirements.

Product Data: Manufacturer's data sheets on each product to be used, including:

Estimated application rate for the required dry mil thickness.

Preparation instructions and recommendations.

Storage and handling requirements and recommendations.

Application instructions.

Cleaning and maintenance instructions.

Shop Drawings: Provide shop drawings indicating details of construction and installation.

1.5

QUALITY ASSURANCE

Applicator Qualifications: Minimum of two years installing similar systems. Upon request, submit name and location of prior projects.

** 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.

Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.

Finish areas designated by Architect.

Do not proceed with remaining work until workmanship is approved by Architect.

Remodel mock-up area as required to produce acceptable work.

1.6

DELIVERY, STORAGE AND HANDLING

Deliver, store and handle materials and products in strict compliance with manufacturer's instructions and recommendations and industry standards. Store materials within limits for temperature and humidity recommended by the manufacturer. Protect from damage.

Containers shall be stored at 65 degrees F to 85 degrees F (18.5 degrees C to 29 degrees C) in a dry and well-ventilated area out of the weather and direct sunlight.

Materials shall be delivered in sealed containers or unopened packages, clearly labeled with the manufacturer's brand names, product identification, safety information, manufacturing date, and lot numbers.

1.7

PROJECT CONDITIONS

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 limits.

Do not apply elastomeric coatings at temperatures below 50 degrees F (10 degrees C) or when there is a possibility of temperatures falling below 32 degrees F (0 degrees C) within a 24 hour period. Do not apply if weather conditions will not permit complete cure before rain, dew, fog, or freezing temperatures.

Do not apply polyurethane foam at temperatures below 50 degrees F (10 degrees C) or above 120 degrees F (48.5 degrees C), or when wind velocities exceed 12 mph. Do not apply if weather conditions will not permit complete cure before rain, dew, fog, or freezing temperatures.

1.8

WARRANTY

Warranty: Provide manufacturer's standard limited warranty.

** NOTE TO SPECIFIER ** Warranties are available for RCS-5000/RCS-5500 System in 5 and 10 year increments. Contact a Lapolla Industries, Inc. customer service representative for further details.

Warranty Period: 5 Years.

Warranty Period: 10 Years.

PART 2

PRODUCTS

2.1

MANUFACTURERS

Acceptable Manufacturer: Lapolla Industries, Inc., which is located at: Intercontinental Business Park 15402 Vantage Pkwy E. Suite 322; Houston, TX 77032 ; Toll Free Tel: 888-452-7655 ; Email: request info; Web: www.lapolla.com

** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions. Delete if not required.

Substitutions: Not permitted.

Requests for substitutions will be considered in accordance with provisions of Section 01 60 00 - Product Requirements.

2.2

PRIMERS

** NOTE TO SPECIFIER ** Use Thermo-Prime as a bonding primer on properly prepared roof decks to tie-down residual dirt, dust and other small particle foreign debris to the substrate before SPF installations. Also use to prime "scarified" foam prior to new SPF applications. Recommended spreading rate is approximately 400 sq.ft. per gallon, depending on substrate and surface profile. Because of its dark color, Thermo-Prime evaporates dew and water vapor from the surface at a substantially faster rate than lighter colors. Increased solar radiation absorbed from the dark color can also increase SPF yields. The water based formula eliminates odor problems normally associated with solvent borne primers. Delete if not required.

Primer: Thermo-Prime Acrylic Roof Primer as manufactured by Lapolla Industries, Inc.

Description: Single component, water soluble, acrylic primer that promotes adhesion of spray-in-place polyurethane foam to a variety of roofing substrates including BUR, modified bitumen, concrete, masonry, galvanized metal and wood.

Color: Black

Flash Point: Greater than 250 degrees F (121 degrees C) (PMCC).

Solids by Weight: 21.1 percent.

Solids by Volume: 19.4 percent.

VOC Content: 37 g/l.

** NOTE TO SPECIFIER ** RCS-30 DTM Acrylic Primer can be used directly over metal substrates to dramatically improve adhesion of RCS Restoration Coating System. Delete if not required.

Primer: RCS-30 DTM Acrylic Primer as manufactured by Lapolla Industries, Inc.

Application: Direct to metal primer for both construction and industrial maintenance applications; formulated for use over prepared steel, aluminum or galvanized metal to promote adhesion for restoration coating systems.

Description: 100 percent acrylic emulsion, waterborne, corrosion resistant.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: RCS-31 - White.

Color: RCS-32 - Gray.

Color: RCS-33 - Red.

Volume Solids: 37 percent +/- 2 percent

Weight Solids: 50 percent +/- 2 percent

VOC Content: Less than 150 g/L; 1.25 lb/gal.

Flash Point (ASTM D 93) : When properly stored, greater than 200 degrees F (93 degrees C), Pensky-Martens Closed Cup (PMCC) test.

** NOTE TO SPECIFIER ** RCS-40 and RCS-5000 work synergistically with each other. Satisfactory adhesion results are not achieved if EPDM is coated with similar "generic" roof coatings. RCS-40 was developed specifically for use on EPDM rubber membranes. Use on other single ply membranes has not been fully studied and is not currently recommended. This product contains phosphates. Delete if not required.

Primer: RCS-40 Rinseable Primer as manufactured by Lapolla Industries, Inc.

Application: Formulated to prepare new and aged EPDM membranes for coating with the RCS-5000 Restoration Coating System.

Description: 100 percent acrylic, surface treatment solution that chemically alters surface of EPDM membranes to promote adhesion of Lapolla's RCS-5000 Restoration Coating System.

Color: Clear to pink liquid.

VOC Content: None.

Flash Point: Non-combustible.

** NOTE TO SPECIFIER ** Use RCS 4000 to protect and extend the life of new modified bitumen, built-up asphalt, and asphalt emulsion roof membranes. Apply as a stand-alone protective elastomeric roof coating or employ as the basecoat in multiple-membrane elastomeric roof coating applications. RCS 4000 will increase the systems overall mechanical bond to the substrate and provide superior resistance to extended ponded water. Use Lapolla's RCS-5000 100 percent Acrylic Elastomeric Roof Coating as a topcoat to complete the "system" when Miami-Dade County, Florida Power & Light, California Title 24, or CRRC certifications are required. The following products may be beneficial and/or necessary to prepare the substrate properly: RCS-20 Acrylic Primer-Sealer, RCS-90 Acrylic-Elastomeric Patch. RCS-5000 Acrylic Elastomeric Roof Coating, Tietex® Roofing Fabric or equivalent. Refer to "Surface Preparation" and the companion Product Data Sheet for specific recommendations. Delete if not required.

Primer: RCS-4000 Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Roof coating/primer. Repair and reinforce seams, flashings, and transitions with like materials.

Modified-Bitumen Substrate: No weathering or primer is required. Apply RCS-4000 directly to properly prepared substrates.

Built-Up Asphalt / Asphalt Emulsions: Allow to weather 14 days before coating. Apply RCS-4000 directly to properly prepared substrates.

Description: fluid-applied, elastomeric roof coating manufactured using all-acrylic polymer technology.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: RCS 4001 - White.

Color: RCS 4002 - Gray.

Sheen: Flat.

Tensile Strength (ASTM D 2370):

At 75 degrees F (24 degrees C): 100 psi; evaluation based on 20 mil DFT.

At 32 degrees F (0 degrees C): 720 psi; evaluation based on 20 mil DFT.

Elongation (ASTM D 2370):

At 75 degrees F (24 degrees C): 550 percent.

At 32 degrees F (0 degrees C): 130 percent.

Adhesion (ASTM C 794, ASTM D 903):

Dry: 1.0 A.

Wet: 1.2 A.

Permeability (ASTM D 1653): 3 US perms at 20 mils.

10.

Tear Resistance (ASTM D 624): 85 lbs/in (+/-2).

11.

Solids by Weight (ASTM D1644): 62.3 percent (+/-3).

12.

Solids by Volume (ASTM D 2697): 50.2 percent (+/-3).

13.

Flashing Point: None.

14.

VOC Content: 0.22 lbs/gal; 26.4 g/l.

15.

Viscosity (cps) (ASTM D 562): 110 KU +/- 5 KU.

16.

Environmental Statement: Complies with U.S. Federal Regulations concerning use of lead and mercury in paint.

** NOTE TO SPECIFIER ** This reflective system can provide an economical option to roof replacement, provide energy savings and sustainable, monolithic performance. A final basecoat and topcoat using RCS-5000 must then be used to complete the coating system. The average temperature and potentially devastating effects of Ultra Violet Rays and extreme weathering are minimized by the RCS-5000 basecoat and topcoat. Delete if not required.

Primer: RCS-5500 Restoration Coating Primer as manufactured by Lapolla Industries, Inc.

Application: Formulated primer for use on TPO membrane systems that are in need of repair or restoration.

Description: Water-based, non-toxic primer, 100 percent acrylic resins.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: RCS 5501 - White.

Color: RCS 5502 - Gray.

Texture: Smooth.

Grade: Spray or roll.

Base: 100 percent Acrylic.

Solids By Weight (ASTM D 1644): 66 percent (+/- 3 ).

Solids By Volume (ASTM D 2697): 52 percent (+/- 3 ).

10.

Weight Per gallon (ASTM D 1475): 11.80 (+/- .2 ).

11.

Tensile Strength (ASTM D 412): 240 psi (+/- 25 ).

12.

Elongation (ASTM D 412): 180 percent (+/- 25 ).

13.

Tear Resistance (ASTM D 624): 79 lbs/in (+/- 2 ).

14.

Adhesion (ASTM C 794, ASTM D 903)

Aged TPO, Dry: PLI 2.5A.

Aged TPO, Wet: PLI 1.5F.

15.

Permeance (ASTM D 1653): 7 US perms at 20 mils.

16.

Viscosity (cps) (ASTM D 562): 120 K.U. ( +/- 8 ).

2.3

POLYURETHANE FOAM SYSTEM

** NOTE TO SPECIFIER ** LPA 3000 locks in every portion of the roof creating a seamless membrane thus eliminating the need for mechanical fasteners - the number one cause of conventional roof leaks. LPA 3000 is also recommended for tank insulation applications. Delete if not required.

Polyurethane Foam System: Foam-Lok LPA 3000 as manufactured by Lapolla Industries, Inc.

Application: For use over a wide variety of roof deck construction and configurations; can also be applied to vertical surfaces making the seamless coverage self-flashing.

Description: Two-component, closed-cell, polyurethane foam system designed to provide a high performance, light weight roofing system.

Aged R-Value (ASTM C 518): 6.5 per inch.

Compressive Strength (ASTM D 1621): 40 min. 50-65 psi.

Core Density (ASTM D 1622): 2.9-3.2 lbs./ft3.

Closed Cell Content (ASTM D 2856): 90 min. greater than 90 percent.

Tensile Strength (ASTM D 1623): 60 min. 55-65 psi.

Water Absorption (ASTM D 2842): (1.0 max per volume) .30.

Water Vapor Permeability at 74 degrees F (23 degrees C) (ASTM E 96): 1.26 perms at 1 inch (25 mm).

10.

Dimensional Stability, 28 days at 158 degrees F (70 degrees F), 98 percent RH (ASTM D 2126): 1.50-1.80.

11.

Surface Burning Characteristics:

Flame Spread Index (ASTM E 84): Less than 75.

Smoke Development: Greater than 500.

12.

Rating/Approvals:

Underwriters Laboratories Inc. (UL): File R14353.

FM Global: 4880/4470.

Florida Building Code Approval #11066.

Dade County Approval:

NOA#08-0402.05 Concrete.

NOA#08-0909.05 Recover.

NOA#08-0402.07 Steel.

NOA#08-0402.06 Wood.

California State Fire Marshall.

California Bureau Of Home Furnishings and Thermal Insulation: Reg. No. CA-T444 (TX).

** NOTE TO SPECIFIER ** Delete if not required.

Polyurethane Foam System: Foam-Lok LPA 2800 as manufactured by Lapolla Industries, Inc.

Foam Type: Foam-LOK 2.8 lb. Density Roofing Foam.

Aged R-Value (ASTM C 518): 6.5 per inch

Compressive Strength (ASTM D 1621, 40 min.): 45-55 psi.

Core Density (ASTM D 1622): 2.7-2.9 lbs./ft3.

Closed Cell Content (ASTM D 2856): 90 min. greater than 90 percent

Tensile Strength (ASTM D 1623, 60 min.): 75-85 psi

Water Absorption (ASTM D 2842, 1.0 max per volume): 0.44.

Water Vapor Permeability at 74 degrees F (23.3 degrees C), perm inch (ASTM E 96, 2.5 max): 1.14 at 1 inch (25 mm)

Dimensional Stability, 28 days at 158 degrees F(70 degrees C), 98 percent RH (ASTM D 2126): 1.20.

10.

Surface Burning Characteristics:

Flame Spread Index (ASTM E 84): Less than 75.

Smoke Development: Greater than 500.

11.

Rating/Approvals:

Underwriters Laboratories Inc. (UL): File R14353.

FM Global: 4880/4470.

Florida Building Code Approval #11066.

Dade County Approval:

NOA#08-0402.05 Concrete.

NOA#08-0909.05 Recover.

NOA#08-0402.07 Steel.

NOA#08-0402.06 Wood.

California State Fire Marshall.

California Bureau Of Home Furnishings and Thermal Insulation: Reg. No. CA-T444 (TX).

** NOTE TO SPECIFIER ** Delete if not required.

Polyurethane Foam System: Foam-Lok LPA 2500 as manufactured by Lapolla Industries, Inc.

Foam Type: Foam-LOK 2.5 lb. Density Roofing Foam

Aged R-Value (ASTM C 518): 6.5 per inch.

Compressive Strength (ASTM D 1621, 40 min.): 45-55 psi.

Core Density (ASTM D 1622): 2.4-2.6 lbs/ft3.

Closed Cell Content (ASTM D 2856, 90 min.): Greater than 90 percent.

Tensile Strength (ASTM D 1623, 60 min.): 60-65 psi.

Water Absorption (ASTM D 2842) (1.0 max per volume): .44.

Water Vapor Permeability at 74 degrees F (23.3 degrees C), perm inch (ASTM E 96, 2.5 max): 1.82 at 1 inch

Dimensional Stability, 28 days at 158 degrees F (70 degrees C), 98 percent RH (ASTM D 2126): 1.54.

10.

Rating/Approvals:

Underwriters Laboratories Inc. (UL): File R14353.

FM Global: 4880/4470.

Florida Building Code Approval #11066.

Dade County Approval:

NOA#08-0402.05 Concrete.

NOA#08-0909.05 Recover.

NOA#08-0402.07 Steel.

NOA#08-0402.06 Wood.

California State Fire Marshall.

California Bureau Of Home Furnishings and Thermal Insulation: Reg. No. CA-T444 (TX).

** NOTE TO SPECIFIER ** FOAM-LOKTM LPA 100 provides a fast, easy to install, high performance roof system that will withstand high wind and eliminate the thousands of fasteners required to install conventional roofing systems to obtain similar wind uplift performance. The elimination of mechanical fasteners increases the square feet per hour of installed system and reduces the potential for leaks due to fastener penetrations. Another benefit of the FOAM-LOKTM LPA 100 is the elimination of thermal shorting and R-value loss due to conduction and loss of insulation area per fastener. LPA 100 also eliminates the issue of handling hot asphalt and asphalt kettles as well as the odor associated with using either a hot asphaltic solvent based adhesive product. Delete if not required.

Polyurethane Foam System: Foam-Lok LPA 100 as manufactured by Lapolla Industries, Inc.

Application: For attachment of insulation and barrier boards over structural concrete, BUR roofing systems and where mechanical attachment is difficult or undesirable in both new and recover roofing applications

Description: Two component, water-blown, spray and bead applied roofing adhesive designed specifically to provide adhesion of board stock type roofing insulations and cover boards to a multitude of roof deck compositions.

Specific Gravity (ASTM D 1638): 1.080.

Viscosity: 600 cps

2.4

PROTECTIVE COATINGS

** NOTE TO SPECIFIER ** Delete if not required.

Protective Coating: Thermo-Flex 9000 Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Barrier to ignition.

Description: Single component, water based, air dry, fire retardant coating.

Solids Content:

By Weight (ASTM D 1644): 63 percent +/-2 percent.

By Volume (ASTM D 2697): 57 percent +/-2 percent.

Flash Point (ASTM D 1310): None up to 212 degrees F (100 degrees C)

** NOTE TO SPECIFIER ** Testing successfully completed per AC 377 Appendix X. Testing conducted and approved for constructions where FL 500 open cell foam is applied underneath roof deck or overhead in crawl spaces at maximum thickness of 10 inches (254 mm) and in vertical walls in both attics and crawl spaces at maximum thickness of 6.25 inches (158 mm), and then coated with TF 9000 at a rate of 1.4 gallons per 100 square feet or a wet film thickness of 22.7 mils. For use on attic floors, the maximum thickness of the FL 500 is limited to 10 inches (254 mm) and must be coated with TF 9000 at a rate of 1.4 gallons per 100 square feet or a wet film thickness of 22.7 mils.

Compliance: AC 377 Appendix X.

** NOTE TO SPECIFIER ** TF 2500 provides outstanding performance with low temperature flexibility and elongation. Just like the other TF Systems, it provides a seamless and lightweight umbrella of protection with sustained performance you can rely on. Delete if not required.

Protective Coating: Thermo-SIL Foam and Coating System as manufactured by Lapolla Industries, Inc..

Application: Protective coating over polyurethane foam.

Description: Moisture-cured elastomeric silicone roof coating.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: White.

Color: Light gray.

Color: Dark gray.

Color: Tan.

** NOTE TO SPECIFIER ** Thermo-Flex 1500HT is a premium quality, High Tensile formulation that also withstands the damp heat and ultra-violet rays of humid environments. Delete if not required.

Protective Coating: Thermo-Flex 1500HT Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Protective coating over polyurethane foam, in a minimum of 2 coats.

Description: High solids, fire retardant, thixotropic, acrylic elastomeric coating.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: White.

Color: Gray.

Color: Tan.

Tensile Strength (ASTM D 2370): 675 psi (+/-25) at 70 degrees F (21 degrees C).

Elongation (ASTM D 2370): 455 percent (+/-25) at 70 degrees F (21 degrees C).

Adhesion (ASTM C 794, ASTM D 903):

7.0 plf PUF (dry).

3.6 plf PUF (wet).

1.4 plf Galvanized Steel (dry).

3.0 plf Galvanized Steel (wet).

Shore A Hardness (ASTM D 2240): 68-73 (+/-2).

10.

Permeability (ASTM D 1653): 6.0 US perms at 20 mils.

11.

Solids by Weight (ASTM D 1644): 64 percent (+/-3).

12.

Solids by Volume (ASTM D 2697): 54 percent (+/-3).

13.

Viscosity (cps) (ASTM D 562): 110 KU (+/-8).

14.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

15.

Emmisivity: .89.

16.

Rating/Approvals:

UL 790 Rated.

Cool Roof Rating Council (CRRC) Rated.

Energy Star Approved.

** NOTE TO SPECIFIER ** Delete if not required.

Protective Coating: Thermo-Flex 1000 Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Protective coating over polyurethane foam, in a minimum of 2 coats.

Description: High solids, fire retardant, thixotropic, acrylic elastomeric coating, designed to withstand the damp heat and ultra-violet rays of humid environments.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: TF 1001 - White (Cool Roof Rating Council Rated).

Reflectivity: 86 percent.

Emmisivity: .90.

Color: TF 1002 - Gray.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

Emmisivity: .89.

Color: TF 1003 - Tan.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

Emmisivity: .89.

Tensile Strength (ASTM D 2370): 300 psi (+/-25).

Elongation (ASTM D 2370): 260 percent (+/-25).

Adhesion (ASTM C 794, ATSM D 903):

7.0 plf PUF (dry).

3.6 plf PUF (wet).

1.4 plf Galvanized Steel (dry).

3.0 plf Galvanized Steel (wet).

Shore A Hardness (ASTM D 2240): 62 (+/-2).

10.

Permeability (ASTM D 1653): 11 US perms at 20 mils.

11.

Tear Resistance (ASTM D 624): 85 lbs/in. (+/-2).

12.

Solids by Weight (ASTM D 1644): 67 percent (+/-3).

13.

Solids by Volume (ASTM D 2697): 55 percent (+/-3).

14.

Viscocity (cps) (ASTM D 562): 110 K.U. (+/-8).

** NOTE TO SPECIFIER ** Thermo-Flex 750 is designed to withstand the heat and ultra-violet rays of low humidity desert environments. Use Thermo-Flex 1000QS (quick set) formula when humidity before or after a light rain occurs. Delete if not required.

Protective Coating: Thermo-Flex 1000QS Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Protective coating over polyurethane foam, in a minimum of 2 coats.

Description: Quick set formulation, high solids, fire retardant, thixotropic, acrylic elastomeric coating formulated for the protection of polyurethane foam insulation.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: TF 1001QS - White (Cool Roof Rating Council Rated).

Reflectivity: 86 percent.

Emmisivity: .90.

Color: TF 1002QS - Gray.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

Emmisivity: .89.

Color: TF 1003QS - Tan.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

Emmisivity: .89.

Tensile Strength (ASTM D 2370): 300 psi (+/-25).

Elongation (ASTM D 2370): 260 percent (+/-25).

Adhesion (ASTM C 794, ASTM D 903):

7.0 plf PUF (dry).

3.6 plf PUF (wet).

1.4 plf Galvanized Steel (dry).

3.0 plf Galvanized Steel (wet).

Shore A Hardness (ASTM D 2240): 62 (+/-2).

10.

Permeability (ASTM D 1653): 11 US perms at 20 mils.

11.

Tear Resistance (ASTM D 624): 85 lbs/in. (+/-2).

12.

Solids by Weight (ASTM D 1644): 67 percent (+/-3).

13.

Solids by Volume (ASTM D 2697): 55 percent (+/-3).

14.

Viscocity (cps) (ASTM D 562): 110 K.U. (+/-8).

15.

Rating/Approvals:

UL790 Rated.

Cool Roof Rating Council (CRRC) Rated.

Energy Star Approved.

Dade County Approved: NOA 06-0320.02.

** NOTE TO SPECIFIER ** Delete if not required.

Protective Coating: Thermo-Flex 750 Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Protective coating over polyurethane foam, in a minimum of 2 coats.

Description: High solids, fire retardant, thixotropic, acrylic elastomeric coating, designed to withstand the heat and ultra-violet rays of low humidity desert environments.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: TF 751 - White (Cool Roof Rating Council Rated).

Reflectivity: 86 percent.

Emmisivity: .90.

Color: TF 752 - Gray.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

Emmisivity: .89.

Color: TF 753 - Tan.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

Emmisivity: .89.

Tensile Strength (ASTM D 2370): 300 psi (+/-25).

Elongation (ASTM D 2370): 260 percent (+/-25).

Adhesion (ASTM C 794, ASTM D 903):

7.0 plf PUF (dry).

3.6 plf PUF (wet).

1.4 plf Galvanized Steel (dry).

3.0 plf Galvanized Steel (wet).

Shore A Hardness (ASTM D 2240): 62 (+/-2).

10.

Permeability (ASTM D 1653): 11 US perms at 20 mils.

11.

Tear Resistance (ASTM D 624): 85 lbs/in. (+/-2).

12.

Solids by Weight (ASTM D 1644): 67 percent (+/-3).

13.

Solids by Volume (ASTM D 2697): 55 percent (+/-3).

14.

Viscocity (cps) (ASTM D 562): 110 K.U. (+/-8).

** NOTE TO SPECIFIER ** Use Thermo-Flex 750QS (quick set) formula when humidity before or after a light rain occurs. Delete if not required.

Protective Coating: Thermo-Flex 750QS Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Protective coating over polyurethane foam, in a minimum of 2 coats.

Description: High solids, fire retardant, thixotropic, acrylic elastomeric coating designed to withstand the heat and ultra-violet rays of low humidity desert environments.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: TF 751QS - White (Cool Roof Rating Council Rated).

Reflectivity: 86 percent.

Emmisivity: .90.

Color: TF 752QS - Gray.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

Emmisivity: .89.

Color: TF 753QS - Tan.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

Emmisivity: .89.

Tensile Strength (ASTM D 2370): 300 psi (+/-25).

Elongation (ASTM D 2370): 260 percent (+/-25).

Adhesion (ASTM C 794, ASTM D 903):

7.0 plf PUF (dry).

3.6 plf PUF (wet).

1.4 plf Galvanized Steel (dry).

3.0 plf Galvanized Steel (wet).

Shore A Hardness (ASTM D 2240): 62 (+/-2).

10.

Permeability (ASTM D 1653): 11 US perms at 20 mils.

11.

Tear Resistance (ASTM D 624): 85 lbs/in. (+/-2).

12.

Solids by Weight (ASTM D 1644): 67 percent (+/-3).

13.

Solids by Volume (ASTM D 2697): 55 percent (+/-3).

14.

Viscocity (cps) (ASTM D 562): 110 K.U. (+/-8).

** NOTE TO SPECIFIER ** Delete if not required.

Protective Coating: Thermo-Flex 500 Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Protective coating over polyurethane foam, in a minimum of 2 coats.

Description: High solids, thixotropic, acrylic elastomeric coating, designed to withstand the damp heat and ultra-violet rays of humid environments.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: TF 501 - White.

Color: TF 502 - Gray.

Color: TF 503 - Tan.

Tensile Strength (ASTM D 2370): 300 psi (+/-25).

Elongation (ASTM D 2370): 260 percent (+/-25).

Adhesion (ASTM C 794, ASTM D 903):

7.0 plf PUF (dry).

3.6 plf PUF (wet).

1.4 plf Galvanized Steel (dry).

3.0 plf Galvanized Steel (wet).

Shore A Hardness (ASTM D 2240): 62 (+/-2).

10.

Permeability (ASTM D 1653) 11 US perms at 20 mils.

11.

Tear Resistance (ASTM D 624): 85 lbs/in. (+/-2).

12.

Solids by Weight (ASTM D 1644): 56 percent (+/-3).

13.

Solids by Volume (ASTM D 2697): 45 percent (+/-3).

14.

Viscocity (cps) (ASTM D 562): 110 K.U. (+/-8).

** NOTE TO SPECIFIER ** Delete if not required.

Protective Coating: Thermo-Flex 500QS Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Protective coating over polyurethane foam, in a minimum of 2 coats.

Description: Quick set formulation, high solids, thixotropic, acrylic elastomeric coating, formulated to dry extremely fast in high humidity climates.

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: TF 501QS - White.

Color: TF 502QS - Gray.

Color: TF 503QS - Tan.

Tensile Strength (ASTM D 2370): 300 psi (+/-25).

Elongation (ASTM D 2370): 260 percent (+/-25).

Adhesion (ASTM C 794, ASTM D 903):

7.0 plf PUF (dry).

3.6 plf PUF (wet).

1.4 plf Galvanized Steel (dry).

3.0 plf Galvanized Steel (wet).

Shore A Hardness (ASTM D 2240): 62 (+/-2).

10.

Permeability (ASTM D 1653): 11 US perms at 20 mils.

11.

Tear Resistance (ASTM D 624): 85 lbs/in. (+/-2).

12.

Solids by Weight (ASTM D 1644): 56 percent (+/-3).

13.

Solids by Volume (ASTM D 2697): 45 percent (+/-3).

14.

Viscocity (cps) (ASTM D 562): 110 K.U. (+/-8).

** NOTE TO SPECIFIER ** Delete if not required.

Protective Coating: Thermo-Flex 250 Acrylic Elastomeric Coating as manufactured by Lapolla Industries, Inc.

Application: Protective coating over polyurethane foam, in a minimum of 2 coats.

Description: High solids, thixotropic, acrylic elastomeric coating designed to withstand the heat and ultra-violet rays of low humidity desert environments.

Standard Colors:

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: TF 251 - White.

Color: TF 252 - Gray.

Color: TF 253 - Tan.

Tensile Strength (ASTM D 2370): 300 psi (+/-25).

Elongation (ASTM D 2370): 260 percent (+/-25).

Adhesion (ASTM C 794, ASTM D 903):

7.0 plf PUF (dry).

3.6 plf PUF (wet).

1.4 plf Galvanized Steel (dry).

3.0 plf Galvanized Steel (wet).

10.

Shore A Hardness: ASTM D 2240: 62 (+/-2).

11.

Permeability (ASTM D 1653): 11 US perms at 20 mils.

12.

Tear Resistance (ASTM D 624): 85 lbs/in (+/-2).

13.

Solids by Weight (ASTM D 1644): 56 percent (+/-3).

14.

Solids by Volume (ASTM D 2697): 45 percent (+/-3).

15.

Viscocity (cps) (ASTM D 562): 110 K.U. (+/-8).

** NOTE TO SPECIFIER ** RCS-5000 TM is the proven roof coating system for the 21st century. This is the premium quality roof coating system you've been looking for - with long term, cost-saving benefits just waiting for you to discover them. Name the substrate, and RCS-5000 can restore it to an effective working roof with few exceptions. It's a "Problem Solver" with a proven track record that can't be denied. Ask one of our Roof Specialists how RCS-5000 TM can change the way you think about solving roof problems. RCS-5000 TM is by far the best restoration system for metal roofs. Along with all the many benefits of RCS-5000 TM, when applied over metal its elastomeric quality accommodates the movement of metal and surface temperatures are reduced as well. The result: A Cool Roof and Cool Savings! The following products may be beneficial and/or necessary to prepare the substrate properly: RCS-20 Acrylic Primer-Sealer, RCS-30 Rust-Inhibitive Metal Primer, RCS-40 Rinseable Primer, RCS-91 Acrylic Elastomeric Patch - Fibered Knife Grade, RCS-92 Acrylic Elastomeric Patch, Tietex® Roofing Fabric or equivalent, EternaBond® WebSeal Seam Tape or equivalent. Refer to "Surface Preparation" and the companion Product Data Sheet for specific recommendations. Delete if not required.

Elastomeric Roof Coating System: RCS-5000 Elastomeric Roof Coating System as manufactured by Lapolla Industries, Inc.

Application: Roof coating system designed to protect and sustain the life of both commercial and residential roofs.

Acceptable Substrates: Built-up asphalt and modified bitumen roofs, single-ply membrane roofs, concrete roofs, EPDM membrane roofs, wood roofs.

Description: Water-based, high solids elastomeric coating formulated with an aggressive biocide compound and fire retardants; 100 percent acrylic resins.,

** NOTE TO SPECIFIER ** Fill in blank below with custom color designation or ' As indicated on Drawings' as applicable. Delete options for color not required.

Color: Custom, ______________.

Color: RCS 5001 - White.

Color: RCS 5002 - Gray.

Color: RCS 5003 - Tan.

Sheen: Flat.

Miami-Dade County Acceptance Number: 07-0612.02.

Cool Roof Rating Council (CRRC) Product ID: (5001 White) 0770-0003

Radiative Properties: (5001 White)

Solar Reflectance - Initial: 0.86

Solar Reflectance - Aged: 0.76

Thermal Emmitance:

Initial: 0.90.

Aged: 0.91.

10.

Solar Reflective Index:

SRI - Initial: 109.

SRI - Aged: 95.

11.

Percent Solids by Weight (ASTM D 1644): 72.4 percent.

12.

Percent Solids by Volume (ASTM D 2697): 56.2 percent.

13.

Viscosity (cps) (ASTM D 562): 110 KU +/- 10 KU.

14.

VOC Content: 20.2 g/l; 0.17 lbs/gal.

15.

Flash Point: None.

16.

Tensile Strength (ASTM D 2370): At 73 degrees F (23 degrees C): 222psi

17.

Elongation at Break (ASTM D 2370): 55 percent (+/-3).

Elongation at 73 degrees F(23 degrees C): 224 percent.

Elongation at 73 degrees F (23 degrees C) after 1000 Hours Accelerated Weathering: 124 percent.

18.

Permeance (ASTM D 1653): 36.2 perms at 20 dry mils, 73.4 degrees F (23 degrees C) /50 percent RH, Inverted.

19.

Water Swelling (ASTM D 471): 5.9 percent.

20.

Wet Adhesion (ASTM C 794, ASTM D 903):

Galvanized Metal: 7.1 PLI.

Concrete: 9.2 PLI.

EPDM: 3.2 PLI.

SBS Granule: 2.0 PLI.

21.

Tear Resistance (ASTM D 624): Die C, 74.3 lbf/in.

22.

Fungi Resistance Rating (ASTM G 21): 0.

23.

Accelerated Weathering (ASTM D 522): Pass.

24.

Appearance After 1000 Hours Accelerated Weathering (ASTM D 4798): Pass.

25.

Environmental Statement: Complies with U.S. Federal Regulations concerning use of lead or mercury in paint; meets EPA standards.

26.

Rating/Approvals:

UL approved.

Florida Building Code (HVHZ) Testing Application Standard TAS 110-2000.

** NOTE TO SPECIFIER ** Delete if not required.

Acrylic Elastomeric Roof Coating: RCS-5000 FS Acrylic Elastomeric Roof Coating as manufactured by Lapolla Industries, Inc.

Application: Roof Coating designed for application temperatures of 35 degrees F (1.7 degrees C) and above, or in conditions where impending hard rain is due within 30 minutes, and in areas of high humidity; formulated for application over metal and most existing conventional roofing systems.

Description: Fast-set formulation, water-based, high solids elastomeric coating formulated with an aggressive biocide compound and fire retardants; 100 percent acrylic resins.,

** NOTE TO SPECIFIER ** Delete options for color not required.

Color: RCS 5001 - White.

Color: RCS 5002 - Gray.

Color: RCS 5003 - Tan.

Texture: Smooth.

Grade: Spray or Roll.

Base: 100 percent acrylic.

Solid by Weight (ASTM D 1644): 66 percent (+/- 3 ).

10.

Solids by Volume (ASTM D 2697): 55 percent (+/- 3 ).

11.

Tensile Strength (ASTM D 412): 260 percent ( +/- 25 ).

12.

Shore A Hardness (ASTM D 2240): 62 Shore A ( +/- 2 ).

13.

Tear Resistance (ASTM D 624): 85 lbs/in. ( +/- 2 ).

14.

Adhesion (ASTM C 794, ASTM D 903):

7.0 F/C - PUF (dry).

3.6 F/A/C - PUF (wet).

1.4 A - Galvanized Steel (dry).

3.0 A/F/C - Galvanized Steel (wet).

15.

Permeance (ASTM D 1653): 11 US perms at 20 mils.

16.

Viscocity (cps) (ASTM D 562): 110 K.U. ( +/- 8 ).

17.

Reflectivity:

New: 85 percent.

Aged: 78 percent.

18.

Emmisivity: .89.

PART 3

EXECUTION

3.1

PREPARATION

Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions. If preparation is the responsibility of another installer, notify Architect in writing of deviations from manufacturer's recommended installation tolerances and conditions.

Do not proceed with installation until substrates have been properly prepared and deviations from manufacturer's recommended tolerances are corrected. Commencement of installation constitutes acceptance of conditions.

Before commencement of application of foam or coating, shut off HVAC equipment on roof and seal air intakes and exhausts. Seal other potential sources of air entry into building.

Compliance: SPFA Bulletin AX- 119, "MDI-Based Polyurethane Foam Systems: Guidelines for Safe Handling and Disposal."

Surface Preparation - General:

Roof decks to receive sprayed polyurethane foam shall be securely fastened to building structure.

Remove contaminants that will interfere with total adhesion of sprayed polyurethane to substrate. Surface shall be free of loose particles, rust, scale, grease, dirt, laitance, and other contaminants.

Prime substrate.

Surface Preparation - Concrete:

Concrete surfaces shall be free of form oil or form release agents.

Excessive grease and oil other than form oil shall be removed by use of an acceptable chemical solvent. Other loose dirt and contaminants may be removed by use of air jet, vacuum equipment, hand or power broom. Washing with tri-sodium phosphate solution is acceptable if deck is dry prior to application of sprayed polyurethane foam.

Taping is required prior to application of sprayed polyurethane foam if substrate includes joint openings between matching panels of concrete beams exceeding 1/4 inch (6 mm).

If matching edges of precast or prestressed panels are offset more than 1/2 inch (13 mm) manufacturer's recommended special treatment of such a joint is required.

Lightweight concrete fill shall be generally smooth and sufficiently dense when cured to provide a firm hard surface. Loose granular finishes are not acceptable.

Prime with Thermo-Prime at the rate of one gallon per 400 square feet.

Surface Preparation - Metal:

If free of rust or loose scale, surface may be cleaned by use of air jet, vacuum equipment, hand or power broom to remove loose dirt.

Remove grease, oil and other contaminants by use of an acceptable chemical solvent.

Metal surfaces having loose scale or rust shall be cleaned in accordance with Steel Structure Painting Council Bulletin SP63 Commercial Blast Cleaning.

Prime metal substrates with Thermo-Prime at the rate of one gallon per 400 sq. ft.

** NOTE TO SPECIFIER ** A thermal barrier may be required under the foam insulation to satisfy insurance or code requirements. Refer to specific local codes. The use of a high tensile mastic tape over the metal flutes may be acceptable if insurance or code requirements do not prevail. If deemed necessary, include the following subparagraph. Delete if not required.

Steel decks shall have one layer of 1/2 inch (13 mm) thick Type X gypsum board thermal barrier attached prior to the application of the foam insulation. Gypsum boards shall be mechanically fastened to the metal roof deck.

Fasteners shall be Dekfast #14's, 1-1/4 inch (32 mm) and coated with corrosion inhibitors. All fasteners are to be installed with a 2-3 inch (51-76 mm) steel, 26 gauge, galvanized plate. Minimum fastening pattern shall be one fastener and plate every four square feet (0.37 square meters). For a list of approved mechanical fasteners, see the latest edition of the Factory Mutual Approval Guide. Apply in pattern and spacing appropriate to materials and fasteners used as recommended by the manufacturer.

If gypsum board is used, one gallon per 200 square feet of Thermo-Flex Prime SG shall be applied as moisture protection and primer.

Surface Preparation - Wood:

Plywood joints in excess of 1/4 inch (6 mm) shall be taped or filled prior to application of sprayed urethane foam.

Tongue and groove materials shall be overlaid with a minimum of 1/4 inch (6 mm) thick plywood sheathing or other flat sheet material acceptable to manufacturer.

Deck shall be dry and free of loose dirt, grease, oil and other contaminants.

Remove loose dirt by use of air jet, vacuum, hand, or power broom. No washing permitted.

Remove grease, oil and other contaminants shall be removed by use of an acceptable chemical solvents.

Surfaces to receive foam shall be primed with Thermo-Prime at the rate of one gallon per 400 square feet.

Surface Preparation - Existing Asphalt or Coal Tar Built-Up Roof Systems:

Remove existing non-embedded gravel and slag surfacing material by means of stiff bristle street brooms or powered mechanical sweepers. Gravel and slag materials shall be hauled from the job site. Suitable trash chutes shall be used to convey existing roofing materials from roof level to ground.

Roof shall be examined for areas where cold application materials may have been applied. Where these materials are present in excessive amounts, such as puddles or mounds, these materials shall be removed down to the existing roofing felts.

Remove dirt and dust from existing roof surface by means of air jet or power vacuum. No washing will be permitted without manufacturer's approval. A broom clean surface is acceptable.

Cut and repair blisters and water saturated areas prior to application of sprayed polyurethane foam.

Existing roof shall be examined for spongy insulation and water saturation. Depending upon conditions revealed by inspection, such areas shall be thoroughly dried or removed and replaced prior to application of sprayed polyurethane foam.

Examine mounting and support members by removal, if necessary, of roof mounted mechanical equipment, including but not limited to air conditioners, evaporative coolers, fans, ducts, and pipes. If wood skids are utilized as support members for existing mechanical equipment, check for dry rot and replace with redwood. Roof-mounted equipment shall be given specific consideration for proper application of sprayed polyurethane foam and elastomeric roof coating. Wood skids and support members shall not be encapsulated in the roofing system.

Roof moisture/vapor vents shall be installed at the rate of one per 500-1000 square feet (46.5-93 square meters) depending upon moisture content in the existing substrate and BUR. Cut a 3 inch (76 mm) to 4 inch (102 mm) vent hole extending through insulation and roofing membrane to deck then attach vent to roof surface prior to application of the sprayed urethane foam. If there is a vapor barrier, leave it intact.

Existing asphaltic material on top of parapet walls and around scuppers is to be removed a minimum of 3 inches (76 mm) from the perimeter.

Prime existing asphaltic substrates with Thermo-Prime primer at the rate of one gallon per 400 sq. ft.

3.2

APPLICATION OF SPRAYED POLYURETHANE FOAM

Install in accordance with manufacturer's written instructions and recommendations.

Sprayed polyurethane foam shall be metered to material supplier specifications through proportioning equipment, which provides thermostatically controlled material temperatures. Hoses between the proportioner and spray gun shall be temperature controlled. Nominal polyurethane foam thickness shall be a minimum of 2 inches (51 mm). Foam shall be applied in no less than 1/2 inch (13 mm) passes. Additional foam may be required to provide positive drainage and smooth consistent transition to roof edge or added insulation value.

Complete foam application in the same day. Foam work not completed shall be protected from moisture and condensation by means of 6 mil plastic or priming that day.

Refer to foam manufacturer's technical data on specific cold and warm weather foam requirements.

Foam shall not be applied when the measured roof deck temperature is below 50 degrees F (10 degrees C) or above 125 degrees F (51.5 degrees C).

Foam shall not be applied when the relative humidity is above 85 percent.

Foam shall not be applied when wind velocities exceed 12 miles per hour (19.3 km per hour), as measured by a wind velometer, unless suitable wind barriers are employed.

Foam shall not be applied to surface where visible moisture is present or, that when tested with a moisture meter, registers a reading greater than 10 percent. No foam shall be applied to a roof deck if deck temperature is within 5 degrees F of dew point.

Roofing contractor shall provide equipment to check weather conditions and shall maintain a daily weather log during project to be submitted with Warranty Request.

Surface texture of installed foam shall range from a smooth to medium coarse "orange peel" finish. Surface textures which may be defined as "popcorn" or "tree bark" are not acceptable and shall be resprayed. Filleting of the foam to parapet walls, vents, skylights, roof mounted equipment, and other roof features, shall provide a relatively smooth transition to roof deck, shall be of uniform cross-section thickness and shall meet other foam surface texture requirements.

Areas, which fail to meet specification requirements with respect to thickness, foam quality or other criteria shall be repaired and resprayed at the expense of the contractor.

Application of spray foam shall not commence during inclement weather or when precipitation is imminent. Area shall be kept clear of traffic from other trades during and for twenty-four hours after completion of application.

Mask off metal, brick, fascias and other surfaces not to receive foam. Provide procedures and means to prevent damage from fugitive over spray of the polyurethane foam insulation. Caution shall be taken to protect those areas not to receive spray foam, including vehicles located nearby.

3.3

APPLICATION OF ACRYLIC ELASTOMERIC ROOF COATING

Install in accordance with manufacturer's written instructions and recommendations.

Apply in a minimum of 2 coats with each coat at a maximum rate of 1.5 gallons per 100 square feet, for a total minimum coating rate of 3 gallons per 100 square feet. Additional coats of 1.5 gallons maximum per 100 square feet may be applied to obtain the desired final thickness of coating. The minimum allowable dry mill thickness shall be 24 mils.

Each coat shall be allowed to cure a minimum of 12 hours (depending upon drying conditions) before proceeding with successive coats. Second and successive coats shall be applied within 48 hours to ensure good adhesion.

Nominal Thickness Of The Final Dry Film Protective Elastomeric Acrylic Coating System:

** NOTE TO SPECIFIER ** Delete subparagraphs if not required.

Average of 30 mils with a minimum of 25 mils for manufacturer's 5 year warranty.

Average of 40 mils with a minimum of 35 mils for manufacturer's 10-year warranty.

Mask off metal and other surfaces not to receive coating.

Refer to manufacturer's application instructions and precautions in the technical datasheet for specific details on mixing, recommended spray equipment, spray techniques, temperature precautions during application.

Foam is to be coated with the acrylic elastomeric coating. Coating shall be extended up and over foam and vent pipes and terminate a minimum of 2 inches (51 mm) above the foam creating a self-terminating flashing.

Coat foam the same day of application, unless delayed by inclement climatic conditions.

If foam is exposed in excess of three days and additional foam thickness is necessary, or surface oxidation has occurred apply Thermo-Prime primer and apply at a rate of 400 square feet per gallon.

** NOTE TO SPECIFIER ** Delete one of the following two paragraphs, or both if mechanical equipment is not installed on the roof.

3.4

ROOFING GRANULES

Roofing granules shall be installed around mechanical equipment at least 6 feet (1829 mm) out as follows:

Apply additional coat of acrylic coating at the rate of 1-1/2 gallons per 100 square feet.

Broadcast grade 11 roofing granules at a rate of 30-40 pounds per 100 square feet.

Seal in granules by applying additional coating at the rate of 3/4 gallon per 100 square feet. No foot traffic shall be permitted on the finished coated surface for 72 hours after application.

3.5

REINFORCED POLYESTER MESH

Reinforced polyester mesh shall be installed around mechanical equipment at least 6 feet (1829 mm) out as follows:

Apply additional coat of acrylic coating at the rate of 1-1/2 gallons per 100 square feet.

Lay down the reinforced polyester mesh while the coating is in a fluid condition.

Seal in polyester mesh by applying additional coating at the rate of 3/4 gallon per 100 square feet. No foot traffic shall be permitted on the finished coated surface for 72 hours after application.

3.6

CLEANING AND PROTECTION

At end of each work day, remove rubbish, empty containers, rags, and other discarded items from the site. After completing work, clean glass and spattered surfaces. Remove spattered coatings by washing, scraping, or other methods, without scratching and damaging adjacent finished surfaces.

Protect installed products until completion of project.

Touch-up, repair or replace damaged products before Substantial Completion.

END OF SECTION