SECTION 07560FLUID-APPLIED ROOFING

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Copyright 2005 - 2015 ARCAT, Inc. - All rights reserved

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Elastomeric membrane roofing for installation over existing roofing.

1.2 RELATED SECTIONS

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

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. ASTM International (ASTM) - Annual Book of ASTM Standards.1. ASTM D 1079 - Standard Terminology Relating to Roofing, Waterproofing, and

Bituminous Materials.2. ASTM D 4263 - Standard Test Method for Indicating Moisture in Concrete by the

Plastic Sheet Method.3. ASTM E 96 - Standard Test Methods for Water Vapor Transmission of Materials.4. ASTM E 108 - Standard Test Methods for Fire Tests of Roof Coverings.5. ASTM G 26 - Practice for Operating Light-Exposure Apparatus (Xenon-Arc Type) With

and Without Water for Exposure of Nonmetallic Materials.6. ASTM G 53 - Practice for Operating Light- and Water-Exposure Apparatus

(Fluorescent UV-Condensation Type) for Exposure of Nonmetallic Materials.

D. Sheet Metal and Air Conditioning Contractors National Association, 1nc. (SMACNA) - Architectural Sheet Metal Manual.

E. National Roofing Contractors Association (NRCA).

F. American Society of Civil Engineers (ASCE).1. ASCE 7 - Minimum Design Loads for Buildings and Other Structures.

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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 SYSTEM DESCRIPTION

A. The Topcoat roofing work includes roofing, flashing and reinforcing of joints and junctions, and roof accessories integrally related to roof installation.

B. Final determination of the fitness of the system, or its components, for any given metal roof may not be made by any representative of GAFMC / Topcoat other than a member of Topcoat's Contractor Services Department.

C. 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 current revision of ASCE 7.

D. GAFMC shall provide all primary roofing materials that are physically and chemically compatible when installed in accordance with manufacturers current application requirements.

1.6 SUBMITTALS

A. Submit under provisions of Section 01300.

B. [Product Data]:1. Provide [Product Data] sheets for each type of product indicated in this section.

C. Shop Drawings:1. Provide manufacturers standard details and approved shop drawings for the system

specified.

1.7 QUALITY ASSURANCE

A. Manufacturer Qualifications: GAFMC shall provide a roofing system that meets or exceeds the criteria listed in this section.

B. Installer Minimum Qualifications: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.

1.8 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.

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1. Tour representative areas of roofing substrates to inspect and discuss conditions of substrate, penetrations and other preparatory work to be performed.

2. Review Topcoat roofing system requirements (Topcoat specifications, detail drawings and the Contract Documents).

3. Review required submittals, both completed and in progress.4. Review and finalize the construction schedule related to roofing work, and verify

availability of materials, installer's personnel, equipment and facilities needed to consistently make progress and avoid delays.

5. Review required inspection(s), testing, and certifying, and material usage accounting procedures. Review forecasted weather conditions.

6. Establish procedures for coping with unfavorable conditions, including the possibility of temporary roofing work.

1.9 REGULATORY REQUIREMENTS

A. Work shall be performed in a safe, professional manner, conforming to federal, state and local codes.

B. UL Listing: Provide Topcoat Roofing System and component materials which have been evaluated by Underwriters Laboratories for flame-spread, and are listed in the "Underwriters Laboratory Roofing Materials and Systems Directory" for Class A construction over existing metal or other non-combustible roofing (Flame-spread shall pass ASTM E-108 with unlimited slope). Provide roof covering materials bearing UL approval marking on the container. This indicates that the material has been subjected to UL's examination, test procedures and follow-up inspection service.

1.10 DELIVERY, STORAGE, AND HANDLING

A. Store and handle Topcoat materials in a manner that will ensure there is no possibility of contamination.

B. Store in a dry, well ventilated, weather tight location at temperatures between 50 degrees F (10 degrees C) and 80 degrees F (27 degrees C) until the products are ready to be applied (keep from freezing). Do not stack material pallets more than two (2) high.

C. Do not subject existing roof to unnecessary loading of stockpiled materials.

D. Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.

1.11 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.

B. Proceed with roofing work only when existing and forecasted weather conditions will permit work to be performed in accordance with Topcoat recommendations and guarantee requirements as follows:1. Do not begin work if precipitation is expected within twenty-four hours of application,

or if temperatures are expected to fall below 42 degrees F (6 Degrees C) during the duration of the job.a. SB-900 Flashing Grade and FlexSeal may be used in temperatures lower than

42 degrees F (6 Degrees C).2. Upper temperature restriction (both air and substrate) for application of Topcoat

products is 120 degrees F (49 degrees C). If substrate temperatures exceed 120

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degrees F (49 degrees C), Topcoat products shall be applied during cooler periods of the day. If this is not practical, the substrate shall be cooled with water, and then Topcoat products applied just after the water has flashed-off.

3. No moisture may be present when applying Topcoat products. Taking into consideration the UV curing properties of Topcoat Roofing Membrane and Flashing Grade, allow for sufficient daylight hours necessary for curing of materials.

1.12 WARRANTY

A. WeatherStopper TopCoat Diamond Pledge Roof Guarantee: Manufacturers standard form, without money limitation, in which Topcoat agrees to repair leaks through the Topcoat products on the roof caused by manufacturing defects, natural deterioration of, or workmanship in applying, the Topcoat roofing system.1. Warranty Duration:

a. Two (2) Years Labor and Material - Classic Bronze.b. Five (5) Years Labor and Material - Bronze.c. Ten (10) Years Labor and Material - Silver.d. Ten (10) Years Labor and Fifteen (15) Years Material - Gold.e. Fifteen (15) Years Labor and Material - Platinum.f. Twenty (20) Years Labor and Material - Titanium.

B. WeatherStopper Integrated System Enhanced Roofing Guarantee: Manufacturers standard form, in which Topcoat agrees to repair leaks through the Topcoat products on the roof caused by manufacturing defects or natural deterioration of the Topcoat roofing system.1. Warranty Duration: Ten (10) Years.

C. Limited Material Warranty: Manufacturers standard form, in which Topcoat agrees to reimburse the owner in the event of a manufacturing defect that adversely affects the performance of the Topcoat Membrane.1. Warranty Duration: Ten (10) Years.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Acceptable Manufacturer: GAF, Commercial Roofing Products, which is located at: 1 Campus Dr.; Parsippany, NJ 07054; Toll Free Tel: 800-ROOF-411; Tel: 973-628-3000; Fax: 973-628-3451; Email:SBenoit@gaf.com; Web:www.gaf.com

B. Substitutions: Not permitted.

C. Requests for substitutions will be considered in accordance with provisions of Section 01600.

2.2 COMPONENTS

A. Topcoat Precote: Clear, solvent-based liquid to be applied as the first coat on corrugated asbestos panels (i.e. "Transite"). Precote provides for optimum adhesion of Topcoat products on " Transite" Panels.1. Application Rate: 1 gallon / 100 sf (.51 l/sm).2. Application Method: Brush or roller.3. Application Temperature (air, surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approx 30 min.5. Total Solids (by weight): 28.4 percent +/- 1 percent.6. Specific Gravity / Weight per gallon: 0.86 / 7.2 lb (3.3 kg).7. Viscosity (75 degrees F (24 degrees C)): 200 +/- 100 cps.

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B. Topcoat MB Plus: Water-based, low VOC, sprayable polymeric liquid that cures to form a seamless rubber membrane. To be applied as a primary coating over all residual asphalt, modified bitumen, BUR, Hypalon, and PVC. Promotes adhesion to asphalt based products as well as resists asphalt bleed through.1. Application Rate: 1.0 to 1.5 gal / 100 sf (.51 to .80 l/sm) per coat.2. Application Method: Airless sprayer or roller.3. Application Temperature (air, surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approx 24 hrs per coat.5. Total Solids (by weight): 65 percent +/- 2 percent.6. Specific Gravity: 1.32 +/- 0.1.7. Weight per Gallon: 11.0 +/- 0.5 lb (5 kg .23kg).8. Viscosity (75 degrees F (24 degrees C)): 15,000 +/- 2,000 cps.9. Tensile Strength: 150 psi (1034 kPa).10. Elongation: 275 percent.11. Clean up: Water before curing.

C. Topcoat FireShield MB: Water-based, low VOC, sprayable polymeric liquid that cures to form a seamless rubber membrane. To be applied as a primary coating over all residual asphalt, modified bitumen, BUR, Hypalon, and PVC. Promotes adhesion to asphalt based products as well as resists asphalt bleed through.1. Application Rate: 1.0 to 1.5 gal / 100 sf (.51 to .80 l/sm) per coat.2. Application Method: Airless sprayer or roller.3. Application Temperature (air, surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approx 24 hrs per coat.5. Total Solids (by weight): 67 percent +/- 2 percent.6. Specific Gravity: 1.34 +/- 0.1.7. Weight per Gallon: 11.2 +/- 0.5 lb (5 kg +/- .23kg).8. Viscosity (75 degrees F (24 degrees C)): 15,000 +/- 2,000 cps.9. Tensile Strength: 100 psi (1034 kPa).10. Elongation: 275 percent.11. Clean up: Water before curing.

D. Topcoat EPDM Coating: Water-based, low VOC, sprayable polymeric liquid that cures to form a seamless rubber membrane. To be applied as a primary coating over EPDM.1. Application Rate: 1.0 to 1.5 gal / 100 sf (.51 to .80 l/sm) per coat.2. Application Method: Airless sprayer or roller.3. Application Temperature (air, surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approx 24 hrs per coat.5. Total Solids (by weight): 65 percent +/- 2 percent.6. Specific Gravity: 1.32 +/- 0.1.7. Weight per Gallon: 11.0 +/- 0.5 lb (5 kg +/- .23 kg).8. Viscosity (75 degrees F (24 degrees C)): 15,000 +/- 2,000 cps.9. Tensile Strength: 150 psi (1034 kPa).10. Elongation: 275 percent.11. Clean up: Water before curing.

E. Topcoat FireShield EPDM Coating: Sprayable, thermoplastic rubber liquid, which cures to form a seamless rubber membrane. It is highly reflective, flexible and nearly impervious to water. It is available in white, aluminum and custom colors.1. Application Rate: 1.0 to 1.5 gal / 100 sf per coat.2. Application Method: Airless sprayer.3. Application Temperature (air, surface): 50 degrees - 120 degrees F.4. Drying Time (75 degrees F, 50 percent RH): Approximately 24 hours per coat.

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5. Total Solids (by weight): 68 percent +/- 2 percent.6. Specific Gravity / Weight per Gallon: 1.46 / 12.2 lbs.7. Viscosity (75 degrees F): 15,000 +/- 2,000 cps.8. Tensile Strength: 210 psi.9. Clean up: Water before curing.

F. Topcoat EPDM Cleaner: Cleaning agent designed to prepare the existing EPDM surface to receive Topcoat EPDM Coating.1. Application Rate: 1 Gal / 500 sq. ft.2. Application Method: Garden sprayer or spray bottle.3. Application Temperature (air, surface): 32 degrees (0 degrees C) - 120 degrees F (49

degrees C).4. Dry Time: 30 Minutes.5. Total Solids (by weight): 16 percent +/- 2 percent.6. Weight per Gallon: 8.3 +/- 0.5 lb (5 kg +/- .23 kg).7. Viscosity: Same as water.8. Clean up: Water.

G. Topcoat MP-300 Rust Inhibitor: Light blue-pigmented, water-based rust inhibitor to be applied over any areas of rust that remain on the substrate after pressure washing. Do not apply in temperatures under 42 degrees F (5.6 degrees C).1. Application Rate: 1 gallon / 100 sf (.51 l/sm).2. Application Method: Brush or airless sprayer.3. Application Temperature (air surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 2 hours.5. Total Solids (by weight): 50 percent +/- 1 percent.6. Specific Gravity / Weight per Gallon: 1.19 / 9.9 lb (4.5 kg).7. Viscosity (75 degrees F (24 degrees C)): 5,000 +/- 1,000 cps.8. Clean up: Water before curing.

H. Topcoat XR-2000: White, water-based adhesion promoting primer designed to enhance the adhesion of the Topcoat roofing system to pre-finished metal roofing, including those containing fluoropolymers such as Kynar or siliconized polyesters. Due to the wide variety of pre-applied finishes, suitability of XR-2000 shall be tested on an individual basis. Do not apply in temperatures under 42 degrees F (5.6 degrees C).1. Application Rate: 0.75 gallon / 100 sf (0.4 l/sm).2. Application Method: Roller or airless sprayer.3. Application Temperature (air, surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 6 hours.5. Total Solids (by weight): 52.5 percent +/- 1 percent.6. Specific Gravity / Weight per Gallon: 1.22 / 10.2 lbs (4.6 kg).7. Viscosity (75 degrees F (24 degrees C)): 3,500 +/- 350 cps.

I. Topcoat Flashing Grade (Regular and Spray Formula): Light-gray, water-based synthetic rubber sealant for application on seams, fasteners, flashings and penetrations. Curing is enhanced by UV exposure. A sprayable version of Flashing Grade (Flashing Grade - Spray Formula) is available for use. Flashing Grade - Spray Formula has the same physical properties as regular Flashing Grade, but is lower in viscosity. Do not apply in temperatures under 42 degrees F (5.6 degrees C).1. Application Rate: 5 gal (19 l) total / 125 ft (38 m) (6 inches (152 mm) width).2. Application Method: Brush or caulking gun (airless sprayer).3. Application Temperature (air, surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approx 24 hrs.

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5. Total Solids (by weight): 68 percent +/- 1 percent.6. Specific Gravity / Weight per Gallon: 1.44 / 12.0 lb (5.4 kg).7. Viscosity - Regular (75 degrees F (24 degrees C)): 225,000 +/- 22,500 cps8. Viscosity - Spray Form (75 degrees F (24 degrees C)): 140,000 +/- 14,000 cps.9. Clean-up: Water before curing.

J. Topcoat Liquid Fabric Flashing Grade: Light gray, water-based, flexible liquid seam sealer. Liquid Fabric may be used to seal horizontal seams on metal roofs without the use of Topester Fabric when horizontal seams are properly secured per product application requirements.1. Application Rate: 5 gal (19 l) total / 125 ft (38 m) of seam (6 inches (152 mm) wide).2. Application Method: Brush.3. Application Temperature (air, surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 24 - 48

hours.5. Total Solids (by weight): 71.7 percent.6. Specific Gravity / Weight per Gallon: 1.35 / 11.3 lb (5.1 kg).7. Elongation: 700 percent.8. Viscosity (75 degrees F (24 degrees C)): 220,000 +/- 20,000 cps.9. Clean up: Water.

K. SB-900 Solvent-Based Flashing Grade: White, solvent-based flashing grade compound designed for use in a wider range of temperatures. This product offers unique flow properties that allow encapsulation of fasteners with little to no tooling.1. Application Rate: 5 gal (19 l) total / 150 ft (46 m). (6 inches (152 mm) width).2. Application Method: Stiff-brush, trowel or caulking gun.3. Application Temperature: (air, surface): 20 degrees (-7. degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 24 hours.5. Total Solids (by weight): 78.5 percent +/- 1 percent.6. Specific Gravity / Weight per Gallon: 1.26 / 10.5 lb (4.8 kg).7. Viscosity (75 degrees F (24 degrees C)): 500,000 +/- 100,000 cps.

L. Topcoat Topester Reinforcing Fabric: Non-woven, spun-bonded polyester fabric that is used in conjunction with Flashing Grade, SB-900 and/or FlexSeal at all seams, roof penetrations, joints or changes in plane that have high shear or stress. Use of Topester Fabric is mandatory on all horizontal seams (except corrugated metal and those with Liquid Fabric application) and penetrations. Topester Fabric Roll Sizes: 6 inches (152 mm) by 150 feet (46 m), 12 inches (305 mm) by 150 feet (46 m).

M. Topcoat Fastener Grade: Light gray, water-based synthetic elastomeric sealant with unique flow properties designed to encapsulate exposed metal roof fasteners. It offers all of the advantages of Topcoat Flashing Grade including high UV resistance and water clean up. Do not apply in temperatures under 42 degrees F (5.6 degrees C).1. Application Rate: Approx. 275 fasteners / tube.2. Application Method: Caulking gun.3. Application Temperature: (air, surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 24 hours.5. Total Solids (by weight): 69 percent +/- 1 percent.6. Specific Gravity / Weight per Gallon: 1.47 / 12.2 lb (5.5 kg).7. Viscosity (75 degrees F (24 degrees C)): 60,000 +/- 6,000 cps.

N. Topcoat Surface Seal SB: Solvent-based, sprayable, thermoplastic rubber liquid, which cures to form a seamless rubber membrane. It is highly reflective, flexible and nearly impervious to water. It is available in white, aluminum and custom colors and may be

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applied in temperatures under 42 degrees F (5.6 degrees C). Surface Seal SB will not freeze and resists "wash-off" by rain before curing is complete.1. Application Rate: 1.0 to 1.5 gal / 100 sf (.51 to .80 l/sm) per coat.2. Application Method: Airless sprayer.3. Application Temperature (air, surface): 32 degrees (0.0 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 24 hours per

coat.5. Total Solids (by weight): 64 percent +/- 3 percent.6. Specific Gravity / Weight per Gallon: 1.20 / 10.1 lb (4.5 kg).7. Viscosity (75 degrees F (24 degrees C)): 11,000 +/- 2,000 cps.8. Tensile Strength: 700 psi (4826 kPa).9. Elongation: 650 percent.10. Clean up: Mineral spirits.

O. Topcoat FireShield SB: Solvent-based, sprayable, thermoplastic rubber liquid, which cures to form a seamless rubber membrane. It is highly reflective, flexible and nearly impervious to water. It is available in white, aluminum and custom colors and may be applied in temperatures under 42 degrees F (5.6 degrees C). Surface Seal SB will not freeze and resists "wash-off" by rain before curing is complete.1. Application Rate: 1.0 to 1.5 gal / 100 sf (.51 to .80 l/sm) per coat.2. Application Method: Airless sprayer.3. Application Temperature (air, surface): 32 degrees (0.0 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 24 hours per

coat.5. Total Solids (by weight): 66 percent +/- 3 percent.6. Specific Gravity / Weight per Gallon: 1.23 / 10.2 lb (4.5 kg).7. Viscosity (75 degrees F (24 degrees C)): 11,000 +/- 2,000 cps.8. Tensile Strength: 800 psi (4826 kPa).9. Elongation: 550 percent.10. Clean up: Mineral spirits.

P. Topcoat Roofing Membrane: Water-based, spray-applied, liquid roofing membrane. Curing is enhanced by UV exposure. Available in white, gray, patina green and other standard as well as custom colors. Do not apply in temperatures under 42 degrees F (5.6 degrees C).1. Application Rate: 1.0 to 1.5 gal / 100 sf (.51 to .80 l/sm) per coat.2. Application Method: Airless sprayer.3. Application Temperature (air, surface): 42 degrees (5.5 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 24 hours per

coat.5. Total Solids (by weight): 71 +/- 3 percent.6. Specific Gravity: 1.48 +/- 0.06.7. Weight per Gallon: 12.3 +/- 0.5 lb (5.6 kg +/- 0.23kg).8. Viscosity (75 degrees F (24 degrees C)): 19,000 +/- 3,000 cps.9. pH: 10.0 1.0.10. Elongation: 375 percent +/- 25 percent.11. Tensile Strength: 275 +/- 25 psi (1896 kPa +/- 172 kPa).12. Water Permeability: 0.003 perm inch (ASTM E96).13. Freeze-Thaw Stability: Passes five (5) cycles.14. Low Temperature Flexibility: 35 mil (.90 mm) dry film will bend 180 degrees at -30

degrees F (-34 degrees C) without fracturing.15. 1,000 hours Atlas Weather-o-meter exposure per ASTM G-26.16. Tensile Strength: 150 percent of original.17. Elongation: 85 percent of original.

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18. 2,000 hours Atlas Weather-o-meter exposure per ASTM G-26: No cracking, embrittlement, loss of adhesion or discoloration.

19. 6,000 hours QUV exposure, type UVB bulb, per ASTM G-53: No cracking, embrittlement, loss of adhesion or discoloration.

Q. Topcoat SKY-LITE: Clear, solvent-based synthetic rubber sealer designed to protect and waterproof porous, deteriorated fiberglass skylight panels. Also available in a water-based version.1. Application Rate: 2 coats at 1 gallon / 100 sf (.51 l/sm) per coat.2. Application Method: Roller or brush.3. Application Temperature (air, surface): 42 degrees (5.6 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 1 hour per

coat.5. Total Solids (by weight): 40.2 percent +/- 2 percent.6. Specific Gravity / Weight per Gallon: 0.91 / 7.6 lb (3.4 kg).7. Viscosity (75 degrees F (24 degrees C)): 3,000 +/- 400 cps.8. Clean-up: Mineral spirits.

R. Topcoat FlexSeal (Regular and Low Viscosity - LV): White, solvent-based synthetic elastomeric compound designed to line and waterproof interior and exterior gutters typically found in metal buildings. FlexSeal is capable of withstanding ponding water. This product is easiest to apply at temperatures over 42 degrees F (5.6 degrees C). A low viscosity version of FlexSeal (FlexSeal LV) is available for use in cold temperatures. FlexSeal LV can also be used on relatively flat metal surfaces because it is self-leveling.1. Application Rate: 5 gal / 100 sf (2.6 l/sm).2. Application Method: Trowel or stiff-bristle brush.3. Application Temperature (air, surface): 20 degrees (-7. degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 24 hours.5. Dry Mil Thickness: 50 mils (1.27 mm).6. Total Solids (by weight): 77 percent +/- 2 percent.7. Specific Gravity / Weight per Gallon: 1.24 / 10.3 lb (4.7 kg).8. Viscosity - Regular (75 degrees F (24 degrees C)): 500,000 +/- 100,000 cps.9. Viscosity - LV (75 degrees F (24 degrees C)): 150,000 +/- 15,000 cps.

S. Topcoat Surface Seal SB Primer: Light gray, solvent borne thermoplastic rubber based, industrial primer/rust inhibitor that shall be applied to any areas of rust before Topcoat Surface Seal SB Roofing Membrane can be applied. It is ideal for priming aluminum coated metal roofs, which are beginning to rust through the coating. Heavy, flaking rust and scale shall be removed by scraping, wire brushing or grit blasting, followed by power washing with water. Surface Seal SB Primer can be used to brush-treat small-scattered areas of rust, or it can be sprayed over areas of widespread rust.1. Application Rate: 1.0 gal / 100 sf (.51 l/sm).2. Application Method: Brush or airless sprayer.3. Application Temperature (air, surface): 35 degrees (1.7 degrees C) - 120 degrees F

(49 degrees C).4. Dry Time (75 degrees F (24 degrees C), 50 percent RH): Approximately 2 hours.5. Total Solids (by weight): 60 percent +/- 1 percent.6. Specific Gravity / Weight per Gallon: 1.21 / 10.1 lb (4.6 kg).7. Viscosity (75 degrees F (24 degrees C)): 8,000 +/- 1,000 cps.8. Clean up: Mineral Spirits.

T. WallCote Block Primer - Clear, water-based primer/sealer to be applied to the porous or chalking substrate prior to the installation of WallCote Flashing Sealant or WallCote Vertical Wall Coating. This product may not be applied in temperatures under 50 degreesF.

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1. Packaging: 5 gallon container.2. Drying time: 1-2 hours at 70 F.3. Application rate: 1 gal / 150 sf.4. Total solids: 23 +/- .5 percent.5. Specific gravity: 1.02.6. Viscosity: 150 +/- 50 cps.

U. WallCote Joint Sealant- White, high-solids one-component, gun grade, non-sag, moisture cure urethane sealant. Designed for perimeter joints around windows, doors, masonry expansion joints, and other joint details. It is fast curing and accommodates 50 percent total joint movement. This product may not be applied in temperatures under 50 degreesF.1. Packaging: 10.3 oz cartridge.2. Clean-up: Xylene, toluene.3. Drying time: 24-48 hrs, 1/4 diameter bend at 75F and 50 percent relative humidity.

Low humidity and cooler temperatures will lengthen cure time.4. Tensile strength: 300 psi.5. Elongation: 550 +/- 50 percent.6. Total solids: 91 percent by weight / 87 percent by volume.7. Specific gravity: 1.60.8. Viscosity: Thixotropic Paste.9. Meets or exceeds the test requirements of:

a. TT-S 00230C (Type II) Class A, Non-sag, one-component.b. ASTM C 920 Type S, Grade NS, Class 25, Use-A, Use-M, Use-G, Use-OAAMA

808.3-92 (Exterior Perimeter Sealing Compound).

V. WallCote Flashing Sealant - Light-gray, water-based, synthetic rubber sealant to be applied on all fissures, joints, and penetrations. Cures under UV exposure. This product may not be applied in temperatures under 50 degrees F. To be applied with stiff bristle brush, knife or trowel. This product is also available in a textured grade.

W. WallCote Elastomeric Wall Coating - Water-based, spray-applied liquid wall membrane. Cures under UV exposure. Available in standard and custom colors. This product may not be applied in temperatures under 50 F.1. Packaging: 5 gal container.2. Drying time: Approx 12 hrs per coat.3. Application rate: 2 coats @ 1 gal / 100 sf /coat.4. Total solids (by weight): 60 +/- 2 percent.5. Total Solids (by volume): 45 percent.6. Specific gravity: 1.37.7. Viscosity:15,000 +/- 2,500 cps @ 75 degrees F.8. pH: 10.0 +/- 1.0.9. Elongation: 325 +/- 75 percent.10. Tensile strength:275 +/- 25 psi.11. Moisture vapor permeance: 4.5 perms (ASTM E96-80).12. Low temperature flexibility: 13-1.13. 5 mil dry film will bend 180 degrees @ -30 degrees F without fracturing.14. Weatherability -1,000 hours Weather-o-meter exposure.

a. Tensile strength: 150 percent of original.b. Elongation: 85 percent of original.

15. Accelerated Aging @ 212 degrees F for fourteen days.a. Tensile strength: 100 percent of original.b. Elongation: At least 80 percent of original.

X. Topcoat CRT: Water-based, spray-applied, liquid roofing membrane. Curing is enhanced by UV exposure. Available in white (for maximum reflectivity) and 15 standard colors. Custom tinting is available upon request. Do not apply in temperatures under 42 degrees F.

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1. Application Rate: 1.25 to 3.0 gal / 100 sq.ft. per coat.2. Application Method: Airless sprayer, brush or roller.3. Application Temperature (air, surface):42 degrees - 120 degrees F.4. Drying Time (75 degrees F, 50 percent RH):Approximately 24 hours per coat.5. Total Solids (by weight): 71 +/- 3 percent.6. Specific Gravity: 1.48 +/- 0.06.7. Weight per Gallon: 12.3 +/- 0.5 lbs.8. Viscosity (75 degrees F): 19,000 +/- 3,000 cps.9. pH: 10.0 +/- 1.0.10. Elongation: 375 percent +/- 25 percent.11. Tensile Strength: 275 +/- 25 psi.12. Water Permeability: 0.003 perm inch (ASTM E96-80).13. Freeze-Thaw Stability: Passes five (5) cycles.14. Low Temperature Flexibility: 35 mil dry film will bend 180 degrees @ -30F without

fracturing.

Y. Fasteners: EverTite fasteners are self-drilling stitching screws with a hex-head and a corrosion resistant zinc-coating.

Z. Airless Sprayer and Accessories: As recommended by Topcoat's Contractor Services Department for application of sprayable Topcoat products.

PART 3 EXECUTION

3.1 SUBSTRATE CONDITIONS

A. Installer shall prepare test patches to check adhesion. Questionable substrates shall be directed to Topcoat's Contractor Services Department for resolution.

B. Preparation of Test Patches: Installer shall prepare no less than three (3) test patches for all questionable roof substrates to verify adhesion of Topcoat products. Minimum test patch size shall be one square foot (0.1 sm). After the test patches have been applied, allow at least one week of drying time before checking adhesion. Check adhesion by slicing an "X" (approx. 6 inches (152 mm) in size) near the center of the test patch. Then try to remove the Topcoat material at the center of the "X" with a spatula. Test patches shall be labeled and photographed to document adhesion test results. Installer shall consult with the Topcoat Contractor Services Department concerning all results.

3.2 PREPARATION OF SUBSTRATE

A. Preparation of the Roof substrate is the responsibility of the Installer. Installer shall address and correct all of the conditions listed in this section. Examine substrates to receive new roofing. Do not proceed with installation of the Topcoat roofing system until unsatisfactory conditions have been corrected in a manner acceptable to the manufacturer (GAFMC / Topcoat).

B. Treatment of excessive gaps: All large or excessive gaps existing between roof panels shall be closed or made flush with EverTite self-drilling fasteners. Closed-cell foam strips or polyurethane foam may be used to pre-fill voids larger than 1/4 inch (6 mm) before applying Topcoat Flashing Grade. Foam shall be shaped with a utility knife or other appropriate method to create a cant strip which facilitates both Topcoat adhesion and water drainage, as well as, prevents shearing of Topester Fabric on metal edges.

C. Installation of sheet metal crickets: Sheet metal crickets shall be installed according to manufacturer's specifications (minimum 26 gauge (0.455 mm) metal - heavier gauge required for larger crickets) on the high side of all curb units. Vertical ribs shall be cut a minimum of 2 inches (51 mm) from the cricket to allow both the cricket flanges to mount

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flush to the metal panel and facilitate water drainage. Cut vertical ribs shall then be treated in the same fashion as a void larger than a 1/4 inch (6 mm). New crickets shall be "sealed" by placing a continuous bead of Topcoat FlexSeal under the flanges before they are mechanically attached to the curb unit and metal roof panel. Then, the cricket flanges shall be stitch-screwed to the curb unit and metal roof panel while the FlexSeal is still wet using EverTite fasteners. This procedure shall apply to installation of all new crickets and curbs.

D. Treatment of Ponding Water Areas: Installer shall make every effort to mechanically eliminate all ponding water areas on the roof prior to application of Topcoat products. Ponding water is defined as water which does not properly drain and remains on the roof surface for more than 48 hours after precipitation stops. Ponding water areas which cannot be eliminated shall be treated with FlexSeal prior to application of other Topcoat products.

E. Repair of Dented / Damaged Panels: Installer shall repair dented and/or damaged metal roof panels. Dents shall be mechanically removed to the maximum extent possible. If ribs are broken, Installer shall cover the broken rib area with a sheet metal cap. Sheet metal rib caps shall be sealed to the roof by applying Topcoat Flashing Grade over the entire broken rib area to be capped prior to attaching the cap with EverTite fasteners. Then, Topcoat Flashing Grade shall be used to seal all the newly created rib cap seams and fasteners. Roof panels that are severely damaged shall be removed and replaced prior to application of Topcoat products.

F. Re-tightening and Replacement of Fasteners: All fasteners shall be re-tightened, secured or replaced, as necessary. All stripped fasteners shall be replaced with larger diameter fasteners, and the area re-secured by adding a new fastener next to the one that was stripped. All missing fasteners shall be replaced. In evaluating a roofing substrate for the application of the Topcoat System, it is important to note the manner in which the roof is fastened. The fastening pattern may require modification to facilitate the proper installation of the system.

G. Thorough Cleaning / Removal of Existing Paints and Coatings: Metal substrate shall be pressure-washed with water. A minimum working pressure of 3,000 psi (20 MPa) shall be used to remove all delaminating paint and coatings dirt, dust, and waste products (oil, oil-based roof cements, solvents, grease, animal fats, etc.). A Roto-spray tip is required to expedite metal panel cleaning. All existing silicone-based sealants shall be completely removed from roof substrate prior to application of Topcoat products. In some cases, a sand injection system may be required during the pressure washing to obtain proper adhesion for Topcoat products. When encountering roof substrates that have living organisms such as algae, mold or fungus, a bleach solution shall be used to kill and remove these organisms during the roof cleaning.

H. Treatment of Residual Asphalt: Installer shall make every effort to remove asphaltic roofing elements. Removal efforts shall include use of methods such as pressure washing, scrapers, wire brushes, electric drill wire-wheels, or other similar tools. Residual asphalt is defined as asphaltic material remaining after the exercise of all required removal efforts, and exists when there is asphaltic material greater in thickness than 3 mils (.08 mm) over an area greater than 1 square foot (0.1 sm). Residual asphalt shall be coated with Topcoat MB Plus.

I. Treatment of Rust Areas: All rust areas shall be treated with Topcoat MP-300 to prevent further deterioration of the metal roof panels. Prior to MP-300 application, remove all loose, flaking or powdery rust by wire brushing if it has not been removed during the pressure washing. All rust shall be completely covered by the MP-300. A second coat of MP-300 is required for heavily rusted roof panel areas. Since MP-300 Rust Inhibitor is designed to adhere to rust, only rusted areas shall be addressed with the product. Installer shall exercise special care when applying MP-300 in high temperature conditions (substrates approaching 120 degrees F 49 degrees C). Substrate temperatures shall be kept below 120

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degrees F (49 degrees C) when applying MP-300. Areas where rust is very heavy on roof panels shall be treated with two (2) applications of Topcoat MP-300 Rust Inhibitor. The second application of MP-300 is only required on heavily rusted areas. This will help prevent rust bleed-through after roof panels have been properly prepared in accordance with Topcoat specifications. Roof panels which are corroded to the point where holes are present shall be replaced.

J. Priming of Pre-Finished Metal Panels: Where roof panel surfaces are known or suspected to contain Kynar-500, other fluoropolymers or silicone, test patches shall be prepared with and without the use of Topcoat XR-2000. Based on test patch adhesion results, Installer shall apply XR-2000 on pre-finished metal panels per specifications. Please note that since XR-2000 has rust inhibiting properties, Topcoat MP-300 is not required where XR-2000 has been used.

K. Pitch Pans: For most situations, pitch pans shall be capped with sheet metal so they can be sealed with Topcoat products. Contact Topcoat's Contractor Services Department for more information.

L. Neoprene Pipe Boots: Topcoat recommends the installation of neoprene boots prior to flashing work being performed for certain types of pipe penetrations. Neoprene boots shall first be sealed to the roof using a bead of FlexSeal prior to mechanical attachment with EverTite fasteners. Contact Topcoat's Contractor Services Department for more information.

M. Open Ridge Vents: Open ridge vents (as shown in detail drawings) may begin to corrode on the inside, and over time, may leak. Topcoat highly recommends either replacement or the installation of sheet metal caps over the open ridge vents when they are rusted on the inside and/or located in a harsh environment (e.g., salt water areas). Sheet metal caps shall be installed when leaks are suspected from the vents. Installation of a cap on the ridge vent will prevent water entry while allowing air to continue to flow through the vent. Do not seal weep holes on the vents. Inadequate roof ventilation may cause blistering in the Topcoat roofing system due to inside air "blowing-out" through roof panel seams. When this condition occurs, it may not allow for proper curing of the Flashing Grade material which may cause blisters.

N. Condensate Lines: Topcoat recommends the installation of condensate lines from HVAC units to gutters as part of the overall roofing contract. Type of piping used for condensate lines may vary depending on local building codes. Lines shall be securely fastened to panel ribs.

O. Moisture Scan: A moisture scan shall be performed on the roof system to determine the suitability of the existing roof for application of a Topcoat roofing system. Any wet or deteriorated areas shall be removed and replaced.

P. Preparation of the Roof substrate is the responsibility of the installer, who shall address and correct all of the conditions listed in this section. Examine substrates to receive new roofing. Do not proceed with the installation of the Topcoat roofing system until unsatisfactory conditions have been corrected in a manner acceptable to the manufacturer (GAFMC / Topcoat).

Q. Treatment of Ponding Water Areas: Installer shall make every effort to mechanically eliminate all ponding water areas on the roof prior to application of Topcoat products. Ponding water is defined as water that does not properly drain and remains on the roof for more than 48 hours after precipitation stops. Ponding water areas that cannot be eliminated shall be treated with FlexSeal prior to application of other Topcoat products.

R. Thorough Cleaning / Removal of Existing Paints and Coatings: The substrate shall be pressure-washed with water. A minimum working pressure of 3,000 psi (20 MPa) (shall be

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used to remove all delaminating paint and coatings, dirt, dust, and waste products (oil, oil-based roof cements, solvents, grease, animal fats, etc.). All existing silicone-based sealants shall be completely removed from the roof substrate prior to application of Topcoat products. The operator of the pressure washing equipment shall take special care in avoiding the introduction of water into the existing roof membrane. When encountering roof substrates that have living organisms such as algae, mold or fungus, a bleach solution shall be used to kill and remove these organisms during the roof cleaning.

S. Deteriorated Seams: Repair all delaminated or open seams using method acceptable to the manufacturer.

T. Pitch Pans: Pitch pans shall be capped with sheet metal so they may be sealed with Topcoat products.

U. Condensate Lines: Condensate lines shall be installed from HVAC units to gutters as part of the overall drainage system. The type of piping used for condensate lines may vary depending on local building codes.

3.3 RESURFACING EPDM

A. Moisture Scan: A moisture scan shall be performed on the roof system to determine the suitability of the existing roof for application of a Topcoat roofing system. Any wet or deteriorated areas shall be removed and replaced.

B. Preparation: Preparation of the roof substrate is the responsibility of the installer, who shall address and correct all of the conditions listed in this section. Examine substrates to receive new roofing. Do not proceed with the installation of the Topcoat roofing system until unsatisfactory conditions have been corrected in a manner acceptable to the manufacturer (GAFMC / Topcoat).

C. Treatment of Ponding Water Areas: Installer shall make every effort to mechanically eliminate all ponding water areas on the roof prior to application of Topcoat products. Ponding water is defined as water that does not properly drain and remains on the roof for more than 48 hours after precipitation stops. Ponding water areas that cannot be eliminated shall be treated with FlexSeal prior to application of other Topcoat products.

D. Deteriorated Seams: Repair all delaminated or open seams using method acceptable to the manufacturer.

E. Pitch Pans: Pitch pans shall be capped with sheet metal so they may be sealed with Topcoat products.

F. Condensate Lines: Condensate lines shall be installed from HVAC units to gutters as part of the overall drainage system. The type of piping used for condensate lines may vary depending on local building codes.

G. Membrane Cleaning: If grease, oils or heavy contaminants are present on the roof surface, remove them with a mild detergent prior to final cleaning. Bleach may be used to remove any algae, fungus or vegetation present.

H. Application of EPDM Cleaner: Spray EPDM Cleaner over the entire surface to be coated at a rate of 1 gallon every 500 square feet Cleaner should be applied with an industrial pump sprayer. After applying, pressure wash EPDM Cleaner from the surface with a working pressure of approximately 2000 psi. Use caution to not damage the membrane or allow water to infiltrate the roof system.

3.4 FLASHING APPLICATION AND INSPECTION INFORMATION

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A. Preliminary work consists of substrate preparation (addressed earlier in specifications) and all flashing details. After completion of substrate preparation, all flashing details, horizontal seams, penetrations and curbs shall be flashed with either 6 inches (152 mm) or 12 inches (395 mm)Topester Fabric and Topcoat Flashing Grade in accordance with Topcoat Detail Drawings. Flashing Grade shall be feathered at the edges (see current Topcoat Detail Drawings) to ensure that water flows over the various flashing details.

B. Fasteners: All fasteners shall be fully encapsulated in Topcoat Fastener Grade, Flashing Grade or SB-900. In some cases, brushing may be required to obtain the proper feathering around fasteners. For fasteners found in the field of the roof (i.e., not at seams or roof penetrations), Topcoat recommends the use of SB-900 in colder climates, and Fastener Grade in warmer / hot climates.

C. Gutter Straps: All gutter straps that are fastened above roof panels shall be fully encapsulated with Topcoat Flashing Grade, including the fasteners.

D. Vertical Seams:1. Ribbed: All ribbed panel vertical seams shall be sealed with Topcoat Flashing Grade.

Feather the Flashing Grade until seams are no longer visible while brushing in the direction parallel to the seam.

2. Standing Seam: All standing vertical seams shall be sealed with a 1/2 inch (12 mm) bead of Topcoat Flashing Grade. Feather Flashing Grade until seams are no longer visible while brushing in the direction parallel to the seam.

3. Standing "T" Seam: Both vertical seams of the standing "T" shall be flashed with a 1/2 inch (12 mm) bead of Topcoat Flashing Grade brushed into the seams.

4. Inverted "J" Seam: In snowy climates and/or when roof leaks are suspected from this type of vertical seam, Topcoat requires re-crimping the short leg of the seam all the way under the horizontal portion of the inverted "J" seam. Brush or trowel apply Topcoat Flashing Grade over the newly created single lock vertical seam. Portable seamers may be used to perform the re-crimping.

5. Corrugated: All corrugated panel vertical seams shall be sealed with Topcoat Flashing Grade. Feather the Flashing Grade until the seams are no longer visible while brushing in the direction parallel to the seam.

6. Batten: Both vertical seams of the batten shall be flashed with a 1/2 inch (12 mm) bead of Topcoat Flashing Grade. Feather Flashing Grade until the seams are no longer visible while brushing in the direction parallel to the seam.

E. Horizontal Seams: All horizontal seams shall be reinforced with a layer of Topcoat Flashing Grade, one (1) layer of Topester Fabric and then a final layer of Topcoat Flashing Grade to completely encapsulate the Fabric. Flashing Grade shall be feathered at least 1inch (25 mm) beyond each side of the 6 inches (152 mm) width to allow water to flow over the seam. Topester Fabric shall be cut around all fasteners so it lies flat. For ribbed roof panels, the Topester Fabric shall be applied over panel ribs in continuous lengths. A minimum 2 inches (51 mm) overlap is required for all splices in Topester Fabric. Topester Fabric is not required for horizontal seams on corrugated roofing panels. Horizontal seams shall be secured with EverTite fasteners on the high side of every other corrugation spaced no more than 6" on center. When using Liquid Fabric, the horizontal seam shall be made flush by installing two Evertite fasteners per flute.

F. Cinch Straps at Panel Endlaps: Re-tighten cinch straps, as necessary. Surround each strap and fastener head with a bead of SB-900 or FlexSeal. Fully inject SB-900 or FlexSeal into the cinch strap water channel to displace all air and moisture within the channel. Then seal the entire lap, strap and fastener heads with a minimum 6 inches (152 mm) width of SB-900 or FlexSeal. Feather the SB-900 or FlexSeal to prevent ponding water at the high side of the lap. The use of Topester Fabric is not required for cinch straps at panel endlaps.

G. Ridge Caps: Except as noted, all ridge caps shall be flashed with a 6 inches (152 mm) or 12

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inches (305 mm) width of Topester Fabric and Topcoat Flashing Grade. All voids and open areas in the ridge cap shall be filled with polyurethane foam prior to application of Topester Fabric and Flashing Grade. Metal "Z" closures which are located within 2 inches (51 mm) of the ridge cap edge, remove all exposed sealant and apply a liberal bead of Topcoat Flashing Grade to all sides of the "Z" closure where they intersect with both the roof panel and ridge cap.

H. Rakes: All fixed rake details for the roof shall be secured and sealed with a 6 inches (152 mm) minimum width of Topcoat Flashing Grade and Topester Fabric. If fixed rake metal is fastened to the top of roof panel ribs and extends back onto the roof, trim off any excess metal and follow horizontal seam flashing procedures. All voids and open areas shall be filled with polyurethane foam prior to application of Topester Fabric and Flashing Grade. For standing seam roof panels, contact Topcoat's Contractor Services Department for information.

I. Parapet Walls: All parapet wall details within the roof system shall be secured and sealed with a 6 inches (152 mm) minimum width of Topcoat Flashing Grade and Topester Fabric. If parapet wall flashing metal is fastened to the top of roof panel ribs and extends back onto the roof, trim off any excess metal and follow horizontal seam flashing procedures. All voids and open areas shall be filled with polyurethane foam prior to application of Topester Fabric and Flashing Grade. For standing seam roof panels, contact Topcoat's Contractor Services Department for information.

J. Curb Flashings: All curb flashings, including cricket details, shall be flashed with at least a 6 inches (152 mm) width of Topester Fabric and Flashing Grade. Encapsulate all fasteners using Topcoat Flashing Grade. Do not bridge fasteners. Topester shall be cut around all fasteners so the fabric lies flat.

K. Penetrations: Topcoat Flashing Grade shall be applied around the base of all penetrations, extending at least 4 inches (102 mm) onto the vertical and 4 inches (102 mm) onto the base. Embed a 6 inches (152 mm) width of Topester Fabric using additional Flashing Grade, as necessary. Cut Topester Fabric to accommodate the shape of the penetration. Both the top and bottom of neoprene pipe boots shall be flashed using Topcoat Flashing Grade and Topester Fabric as described above.

L. Skylights: Curb skylights shall be treated in the same fashion as Curb Flashings. The entire perimeter of flush-mounted skylights shall be flashed with a minimum 6 inches (152 mm) width of Topcoat Flashing Grade and Topester Fabric. All exposed skylight fasteners shall be encapsulated with Topcoat Flashing Grade. Do not bridge fasteners. Topester shall be cut around all fasteners so Fabric lies flat. After flashing work has been completed and Flashing Grade has cured, treat deteriorated fiberglass skylight panels with Topcoat SKY-LITE material.

M. Gutters: Trowel or brush apply FlexSeal to the interior or exterior gutters incorporating 6 inches (152 mm) Topester Fabric at all gutter seams. Gutter shall be completely clean and dry before applying FlexSeal.

N. Ponding Water Areas: Contact the Topcoat Contractor Services Department for information.

O. Inspect Preliminary Work / Flashing Details for problem areas (e.g., gaps, cracks, fishmouths, air pockets, etc.) to ensure that work is complete and satisfactory.

P. Inform Project Architect and Topcoat Contractor Services Department when all preliminary work and flashing details will be complete and the Installer is ready to proceed with application of Topcoat Roofing Membrane. Allow a minimum of two (2) weeks for the interim inspection to be made by the Topcoat Contractor Services Department.

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Q. Any final roofing installation prior to this interim inspection is subject to rejection by the Project Architect and/or the Topcoat Contractor Services Department. Please be advised that Technical On-Site Support for instructing Certified Contractors in the proper application of the Topcoat Roofing System is available. The first day of instruction is at no-charge to the Certified Contractor. Any additional days or return trips for instruction will be at a cost of $475.00 per day, plus all incurred travel expenses. The two (2) required inspections (interim and final) for the Topcoat Bronze Solo, Bronze, Silver, Gold, Platinum, and Titanium Systems are free of charge. Additional inspections will be billed at a rate of $ 475.00 per day plus all incurred travel costs.

3.5 FLASHING APPLICATION AND INSPECTION INFORMATION

A. Preliminary work consists of substrate preparation and all flashing details. After completion of substrate preparation, all flashing details, penetrations and curbs shall be flashed with either 6 inches (152 mm) or 12 inches (305 mm) Topester Fabric and Topcoat Flashing Grade in accordance with Topcoat Detail Drawings. Flashing Grade shall be feathered at the edges (see current Topcoat Detail Drawings). so that water may flow over the various flashing details.

B. Parapet Walls: All parapet wall details within the roof system shall be secured and sealed with a 6 inches (152 mm) minimum width of Topcoat Flashing Grade and Topester Fabric. All voids and open areas shall be filled with polyurethane foam prior to application of Topester Fabric and Flashing Grade.

C. Curb Flashings: All curb flashings, including cricket details, shall be flashed with at least a 6 inches (152 mm) width of Topester Fabric and Flashing Grade. Encapsulate all fasteners using Topcoat Flashing Grade. Do not bridge fasteners. Topester shall be cut around all fasteners so fabric lies flat.

D. Penetrations: Topcoat Flashing Grade shall be applied around the base of the penetration, extending at least 4 inches (101 mm) onto the vertical and 4 inches (101 mm) onto the base. Embed a 6 inches (152 mm) width of Topester Fabric using additional Flashing Grade, as necessary. Cut Topester Fabric to accommodate the shape of the penetration. Both the top and bottom of neoprene pipe boots shall be flashed using Topcoat Flashing Grade and Topester Fabric as described above.

E. Skylights: Curb skylights shall be treated in the same fashion as curb flashings. The entire perimeter shall be flashed with a minimum 6 inches (152 mm) width of Topcoat Flashing Grade and Topester Fabric. All exposed skylight fasteners shall be encapsulated with Topcoat Flashing Grade. Do not bridge fasteners. Topester shall be cut around all fasteners so the fabric lies flat.

F. Gutters: Trowel or brush apply FlexSeal to the interior or exterior gutter incorporating 6 inches (152 mm) Topester Fabric at all gutter seams. Gutter shall be completely clean and dry before applying FlexSeal.

G. Ponding Water Areas: The severity of the ponding water condition will determine the requirements for additional preparation. Contact the Topcoat Contractor Services Department for information.

H. Inspect Preliminary Work / Flashing Details for problem areas (e.g., gaps, cracks, fishmouths, air pockets, etc.) to ensure that work is complete and satisfactory.

3.6 FLASHING APPLICATION AND INSPECTION INFORMATION

A. Preliminary work consists of substrate preparation and all flashing details. After completion of substrate preparation, all flashing details, penetrations and curbs shall be flashed with

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either 6 inches (152 mm) or 12 inches (305 mm) Topester Fabric and Topcoat SB-900 in accordance with Topcoat Detail Drawings. Topcoat SB-900 shall be feathered at the edges (see current Topcoat Detail Drawings) so that water may flow over the various flashing details.

B. Parapet Walls: All parapet wall details within the roof system shall be secured and sealed with a 6 inches (152 mm) minimum width of Topcoat SB-900 and Topester Fabric. All voids and open areas shall be filled with polyurethane foam prior to application of Topester Fabric and Topcoat SB-900.

C. Curb Flashings: All curb flashings, including cricket details, shall be flashed with at least a 6 inches (152 mm) width of Topester Fabric and Topcoat SB-900. Encapsulate all fasteners using Topcoat SB-900. Do not bridge fasteners. Topester shall be cut around all fasteners so fabric lies flat.

D. Penetrations: Topcoat SB-900 shall be applied around the base of the penetration, extending at least 4 inches (101 mm) onto the vertical and 4 inches (101 mm) onto the base. Embed a 6 inches (152 mm) width of Topester Fabric using additional Topcoat SB-900, as necessary. Cut Topester Fabric to accommodate the shape of the penetration. Both the top and bottom of neoprene pipe boots shall be flashed using Topcoat SB-900 and Topester Fabric as described above.

E. Skylights: Curb skylights shall be treated in the same fashion as curb flashings. The entire perimeter shall be flashed with a minimum 6 inches (152 mm) width of Topcoat SB-900 and Topester Fabric. All exposed skylight fasteners shall be encapsulated with Topcoat SB-900. Do not bridge fasteners. Topester shall be cut around all fasteners so the fabric lies flat.

F. Gutters: Trowel or brush apply FlexSeal to the interior or exterior gutter incorporating 6 inches (152 mm) Topester Fabric at all gutter seams. Gutter shall be completely clean and dry before applying FlexSeal.

G. Ponding Water Areas: The severity of the ponding water condition will determine the requirements for additional preparation. Contact the Topcoat Technical Department for information.

H. Inspect Preliminary Work / Flashing Details for problem areas (e.g., gaps, cracks, fishmouths, air pockets, etc.) to ensure that work is complete and satisfactory.

3.7 MEMBRANE APPLICATION

A. 4.5 Gal per square (2.3 l/sm):1. Spray-apply base coat (gray) of Topcoat Roofing Membrane at the rate of 1.50 gal per

100 square feet (.80 l/sm). Base coat shall be applied parallel to the ribs of roof panels. Allow at least 24 hours drying time, then inspect the base coat for defects, flaws or areas of insufficient coverage. Correct any unsatisfactory conditions.

2. Spray-apply intermediate coat (white) of Topcoat Roofing Membrane at the rate of 1.50 gal per 100 square feet (.80 l/sm). Intermediate coat shall be applied parallel to the ribs of the roof panels. It shall not be applied unless the base coat is clean and will provide proper adhesion. Allow a minimum of 24 hours drying time prior to allowing foot traffic or inspection of roof surface.

3. Spray-apply finish coat (white) of Topcoat Roofing Membrane at the rate of 1.50 gal per 100 square feet (.80 l/sm). Finish coat shall be applied parallel to the ribs of the roof panels. It shall not be applied unless the preceding coat is clean and will provide proper adhesion. Allow a minimum of 24 hours drying time prior to allowing foot traffic or inspection of roof surface.

4. After a minimum of 24 hours has elapsed, inspect the final roof surface for flaws, areas of insufficient coverage, insufficient thickness, etc. The specified Topcoat

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Platinum System dry membrane thickness is 30 mils (.76 mm) in the field and 90 mils (2.3 mm) on the seams and flashing details. At completion of all work, seams should not be visible on the roof. All unsatisfactory areas shall be repaired.

B. 3.25 Gal. per Square (1.7 l/sm):1. Spray-apply base coat (gray) of Topcoat Roofing Membrane at the rate of 1.50 gal

per 100 square feet (.80 l/sm). Base coat shall be applied parallel to the ribs of roof panels. Allow at least 24 hours drying time, then inspect the base coat for defects, flaws or areas of insufficient coverage. Correct any unsatisfactory conditions.

2. Spray-apply finish coat (white) of Topcoat Roofing Membrane at the rate of 1.75 gal per 100 square feet (.90 l/sm). Finish coat shall be applied parallel to the ribs of the roof panels. It shall not be applied unless the base coat is clean and will provide proper adhesion. Allow a minimum of 24 hours drying time prior to allowing foot traffic or inspection of roof surface.

3. After a minimum of 24 hours has elapsed, inspect the final roof surface for flaws, areas of insufficient coverage, insufficient thickness, etc. The specified Topcoat Platinum System dry membrane thickness is 27 mils (.70 mm) in the field and 87 mils (2.2 mm) on the seams and flashing details. At completion of all work, seams should not be visible on the roof. All unsatisfactory areas shall be repaired.

C. 3.0 Gal per Square (1.5 l/sm):1. Spray-apply base coat (white) of Topcoat Roofing Membrane at a rate of 1.0 gallon

per 100 square feet (0.51 l/sm). Base coat shall be applied parallel to the ribs of roof panels. Allow at least 24 hours drying time, then inspect the base coat for defects, flaws or areas of insufficient coverage. Correct any unsatisfactory conditions.

2. Spray-apply finish coat (white - shall be same color as used for base coat) of Topcoat Roofing Membrane at a rate of 1.0 gallon per 100 square feet (0.51 l/sm). Finish coat shall be applied parallel to the ribs of the roof panels. It shall not be applied unless the base coat is clean and will provide proper adhesion. Allow a minimum of 24 hours drying time prior to allowing foot traffic or inspection of roof surface.

3. After a minimum of 24 hours has elapsed, inspect the final roof surface for flaws, areas of insufficient coverage, insufficient thickness, etc. The specified Silver System membrane thickness is 18 mils (.50 mm) in the field and 78 mils (2.0 mm) on the seams and flashing details. At completion of all work, seams should not be visible on the roof. All unsatisfactory areas shall be repaired.

D. 2.5 Gal per Square (1.3 l/sm):1. Spray-apply base coat (gray) of Topcoat Roofing Membrane at a rate of 1.0 gallon per

100 square feet (.51 l/sm). Base coat shall be applied parallel to the ribs of roof panels. Allow at least 24 hours drying time prior to inspecting the base coat for defects, flaws or areas of insufficient coverage. Correct any unsatisfactory conditions.

2. Spray-apply finish coat (white) of Topcoat Roofing Membrane at a rate of 1.5 gal per 100 square feet (.80 l/sm). Finish coat shall be applied parallel to the ribs of the roof panels. It shall not be applied unless the base coat is clean and will provide proper adhesion. Allow a minimum of 24 hours drying time prior to allowing foot traffic or inspection of roof surface.

3. After a minimum of 24 hours has elapsed, inspect the final roof surface for flaws, areas of insufficient coverage, insufficient thickness, etc. Specified Gold System membrane thickness is 23 mils (.59 mm) in the field and 83 mils (2.1 mm) on the seams and flashing details. At completion of all work, seams should not be visible on the roof. All unsatisfactory areas shall be repaired.

E. 2.0 Gal per Square (1.0 l/sm):1. Spray-apply base coat (white) of Topcoat Roofing Membrane at a rate of 1.0 gallon

per 100 square feet (0.51 l/sm). Base coat shall be applied parallel to the ribs of roof panels. Allow at least 24 hours drying time, then inspect the base coat for defects,

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flaws or areas of insufficient coverage. Correct any unsatisfactory conditions.2. Spray-apply finish coat (white - shall be same color as used for base coat) of Topcoat

Roofing Membrane at a rate of 1.0 gallon per 100 square feet (0.51 l/sm). Finish coat shall be applied parallel to the ribs of the roof panels. It shall not be applied unless the base coat is clean and will provide proper adhesion. Allow a minimum of 24 hours drying time prior to allowing foot traffic or inspection of roof surface.

3. After a minimum of 24 hours has elapsed, inspect the final roof surface for flaws, areas of insufficient coverage, insufficient thickness, etc. The specified Silver System membrane thickness is 18 mils (.50 mm) in the field and 78 mils (2.0 mm) on the seams and flashing details. At completion of all work, seams should not be visible on the roof. All unsatisfactory areas shall be repaired.

F. 1.5 Gal per Square (.80 l/sm):1. Spray-apply finish coat (white) of Topcoat Roofing Membrane at a rate of 1.5 gal per

100 square feet (.80 l/sm). Finish coat shall be applied parallel to the ribs of the roof panels. Allow a minimum of 24 hours drying time prior to allowing foot traffic or inspection of roof surface.

2. After a minimum of 24 hours has elapsed, inspect the final roof surface for flaws, areas of insufficient coverage, insufficient thickness, etc. The Bronze System membrane thickness is 14 mils (.40 mm) in the field and 74 mils (1.9 mm) on the seams and flashing details. At completion of all work, seams should not be visible on the roof. All unsatisfactory areas shall be repaired.

G. 1.0 Gal per Square (.51 l/sm):1. Spray-apply finish coat (white) of Topcoat Solo at the rate of 1.0 gal per 100 square

feet (.51 l/sm). Finish coat shall be applied parallel to the ribs of the roof panels. It should not be applied unless roof substrate is clean and will provide proper adhesion. Allow a minimum of 24 hours drying time prior to allowing foot traffic or inspection of roof surface.

2. After a minimum of 24 hours has elapsed, inspect the final roof surface for flaws, areas of insufficient coverage, insufficient thickness, etc. The Bronze Solo System dry membrane thickness is 7 mils (.12 mm) in the field and 67 mils (1.7 mm) on the seams and flashing details. At completion of all work, seams should not be visible on the roof. All unsatisfactory areas shall be repaired.

3.8 OTHER ITEMS

A. Installer shall take photographs of representative roof areas, including detail work, before work commences, after the surface has been properly prepared, after all flashing and detail work has been performed, and after the spray application of the Topcoat membrane.

B. Installer shall provide the following support for on-site inspections by a representative from Topcoat's Contractor Services Department (list is not comprehensive):1. Representative from the installer's company who has authority to make binding

decisions2. Required means to access all areas of the treated roof.3. Previous photographs of the roof, including test patch results, as applicable4. Topcoat products and application equipment required to repair roof areas where

destructive tests are to be performed by the Topcoat Contractor Services Department.

C. Special care shall be taken to avoid shading when spraying dark Topcoat Roofing Membrane colors. When applying a dark Topcoat Membrane color, Installer shall always spray wet material onto wet material to ensure that spray lines do not appear. Topcoat strongly recommends the installation of any dark-colored finish coat by spraying two lighter coats (instead of one heavy coat) using a smaller tip size. Installer should also use the roof ribs or standing seams to terminate each spray pass.

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D. Installer shall take special care when moving spray hoses and other equipment on the roof so that flashing work and encapsulated fastener heads are not damaged. Also, all spray equipment shall remain on the ground for the duration of the job.

E. If there will be an extended period of time (6 months or greater) between application of base and finish coats, the use of Topcoat white for the base coat (versus gray) is recommended. The base coat shall be thoroughly cleaned before applying the finish coat.

F. It is strongly recommended that walkways designed for metal roofing systems be installed in all high traffic areas. Contact the Topcoat Contractor Services Department for recommendations.

3.9 REPAIRS

A. In the event that the Topcoat membrane is damaged or punctured, repairs are to be performed using Topcoat Flashing Grade and Topester Fabric (where necessary) as follows:1. Damaged areas are to be cut, cleaned and dried.2. Apply Flashing Grade, and feather out onto the existing Topcoat membrane.3. If a new penetration area has been cut, embed Topester Fabric into the Flashing

Grade according to standard Topcoat specifications.4. Once the Flashing Grade has cured, Topcoat white or appropriate Topcoat color may

be applied for aesthetic uniformity.5. For required repairs during cold weather conditions (i.e., below 42 degrees F (5.6

degrees C), Topcoat SB-900 Flashing Grade or FlexSeal shall be used in lieu of water-based Flashing Grade

END OF SECTION

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