Elastomeric Roofing - TOPCOAT Membrane

TOPCOAT® Membrane



Description

TOPCOAT® Membrane is a water-based, spray-applied liquid, which cures to form a seamless 100% acrylic elastomeric membrane specially designed to seal the entire roof. TOPCOAT® Membrane is an ENERGY STAR® qualified reflective product that will help to reduce building temperatures. TOPCOAT® Membrane is listed by the Cool Roof Rating CouncilSM for solar reflectance and thermal emittance. It offers high tensile strength and elongation, and is virtually undamaged by extended exposure to solar ultraviolet energy. Ultraviolet rays enhance curing. It is low in VOC, non-flammable and presents minimal hazard to the applicator and the environment. It is available in white (for maximum reflectivity) and 15 standard colors. Custom tinting is available upon request.


Uses

TOPCOAT® Membrane is designed to protect and waterproof metal, wood, copper, PVC, transite and concrete roof substrates for many years. Substrate shall not pond water for a period longer than 48 hours. Surface must be free of ponding water, ice, snow and debris prior to application. Do not apply at temperatures below 42°F. Substrate temperatures must be below 120°F when applying product.


Advantages
  • ENERGY STAR® qualified reflectivity can dramatically decrease building temperatures

  • Highly reflective and listed by the Cool Roof Rating CouncilSM
    for solar reflectance and thermal emittance

  • California Title 24 Compliant

  • Offers high tensile strength and elongation, and is virtually undamaged by extended exposure to solar ultraviolet energy

  • Low VOC, non-flammable, and presents minimal hazard to the applicator or the environment

  • Cures and becomes stronger under the sun’s ultraviolet rays

  • Water-based for superior protection and easy application

  • Is available in white (for maximum reflectivity) and 15 standard colors (custom tinting is available upon request)

  • Limited material warranty available for up to 10 years*

  • Guarantees available for up to 20 years*

  • Is available in 1-gallon, 5-gallon, and 55-gallon containers in addition to bulk totes

For application questions, please contact GAF Technical Services at
1-800-ROOF-411.


Applicable Standards

ASTM D-1653, ASTM D-412, ASTM G-26, ASTM G-29, ASTM B-117, ASTM C-794, ASTM G-21, FTMS 141.6271, FTMS 141.6221, ASTM D-2243-90, ASTM D-2196, ASTM D-2240, ASTM D-2794, ASTM D-1475, ASTM E-1644, ASTM D-2697, ASTM E-470, ASTM G-53

Note: Repair leaks promptly to avoid adverse effects, including mold growth. TOPCOAT® Elastomeric Roofing Membrane can be utilized as a direct replacement for TOPCOAT® CRT.

*See warranties and guarantees for complete coverage and restrictions

TOPCOAT® Membrane Technical Data
Application Rate: 1.0 to 3.0 gallons/100 sq.ft. total, varies by system
Application Method: Airless sprayer, brush, or roller
Application Temp (air, surface): 42°F – 120°F
Drying Time (75°F, 50% RH):
Approximately 24 hours per coat
Wet Mil Thickness:
(1.0 Gallon/100SF) – 16 wet mils
Dry Mil Thickness: (1.0 Gallon/100SF) – 9 to 10 dry mils
Total Solids (by weight): 71% ± 3%
Total Solids (by volume): 58% ± 2%
Specific Gravity: 1.48 ± 0.06
Weight per Gallon: 12.3 ± 0.5 lbs
Viscosity (75°F): 19,000 ± 3,000 cps
pH:

10.0 ± 1.0 lbs

Elongation: 375% ± 25%
Tensile Strength: 275 ± 25 psi
Water Permeability: 5.28 perm inch (ASTM D-1653)
Freeze-Thaw Stability: Passes five (5) cycles
Low Temp Flexibility: 35 mil dry film will bend 180° @ -30°F without fracturing
Weatherability : 1,000 hours Atlas Weather-o-meter® exposure per ASTM D-412, ASTM G-26,
Tensile Strength: 150% of original, Elongation: 85% of original, 1,500 hours Atlas Weather-o-meter® exposure per ASTM D-412, ASTM G-26, No cracking, embrittlement, loss of adhesion or discoloration, 2,000 hours UV exposure, type UV bulb, per ASTM G-53, No cracking, embrittlement, loss of adhesion or discoloration
Initial Reflectivity: 0.85 (white only)
Aged Reflectivity: 0.68 (white only)
Initial Emissivity: 0.90 (white only)
Aged Emissivity: 0.88, 3 year (white only)
Initial SRI: 107 (white only)
Aged SRI: 83 (white only)
Storage: Store in well-ventilated area at 50°F to 80°F; protect from freezing
Shelf Life: 1 Year
Clean up: Water and mild soap before curing

Documents

All documents are U.S. English unless otherwise noted