Elastomeric Roofing - TOPCOAT Fastener Grade

TOPCOAT® Flashing- Brush Grade


TOPCOAT® Flashing - Brush Grade is a light gray, water-based 100% acrylic synthetic elastomeric sealant with unique flow properties designed to encapsulate exposed metal roof fasteners. It offers all of the advantages of TOPCOAT® Flashing- Brush Grade, including high UV resistance and water clean-up. In addition, its unique flow properties allow for easy application to exposed metal roof fasteners with no tooling.


TOPCOAT® Flashing - Brush Grade is designed for use on metal roof fasteners. Provides a seal along seams and around fasteners on metal roofs and excellent sealing around curbs and counter flashings. Do not apply at temperatures below 42°F. Substrate temperatures must be below 120°F when applying product.

  • An elastomeric sealant that cures in the ultraviolet rays of the sun

  • Water-based; environmentally friendly and safe

  • Strong; forms a flexible seal that will not become brittle

  • Flexible; will expand and contract with metal roof

  • Free from plasticizers and oils that will migrate out over time

  • Limited material warranty available for up to 10 years*

  • Available in 1-gallon pails, 5-gallon pails, and 1-quart cartridges

For application questions, please contact GAF Contractor Services at 1-800-766-3411.

Applicable Standards

ASTM C-794, ASTM D-1475, ASTM E-1644

Note: Repair leaks promptly to avoid adverse effects, including mold growth

*See warranties for complete coverage and restrictions

TOPCOAT® Flashing Brush Grade Technical Data
Application Rate (seams): 5 gallons per 125 lineal ft. of seam
Approximately 275 fasteners/1-qt. tube
Application Method: Caulking gun
Application Temp (air, surface): 42°F – 120°F
Drying Time (75°F, 50% RH):
Approximately 24 hours
Wet Mil Thickness:
105 wet mils
Dry Mil Thickness: 60 dry mils
Total Solids (by weight): 69% ± 1%
Total Solids (by volume): 56% ± 2%
Weight per Gallon: 12.0 ± 0.5 lbs
Viscosity (75°F): 60,000 ± 6,000 cps
Storage: Store in well-ventilated area at 50°F to 80°F; protect from freezing
Shelf Life: 1 Year
Clean up: Water before curing


All documents are U.S. English unless otherwise noted

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