GAF Multi-Purpose Primer - COMCO299
Data Sheets
About GAF Multi-Purpose Primer, PT A & B
GAF Multi-Purpose Primer is a two-component, water-based epoxy, 9-to-1 ratio primer. It is effective at increasing the adhesion of acrylic, polyurethane, butyl, and silicone coatings over most new or existing roof, deck, and wall substrates.
Easy to Use
GAF Multi-Purpose Primer may be applied by brush, roller, or spray. Simply mix Part A individually, then add Part B into Part A and mix until achieving a uniform consistency. Once mixed, the usable pot life is approximately 2 hours at 75°F (24°C). Use water and soap to thoroughly flush equipment. If product has hardened, clean with solvent. For full installation details, see the Data Sheet in the Documents section below.
Features & benefits
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Blocks asphault oil bleed-through
Helps prevent unsightly stains from oils that can seep from asphalt substrates. -
Promotes adhesion
Promotes adhesion of the top coat to hard-to-stick surfaces. -
Tinted for visibility
Easily identifiable on roof surfaces.
Product Documentation
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GAF Multi-Purpose Primer Part A SDS - 3102
Safety Data Sheets
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GAF Multi-Purpose Primer Part B SDS - 3103
Safety Data Sheets
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Silicona sobre asfalto Restoration 5-Step Info-Sheet - COMCO606S Spanish
Installation Instructions and Guides
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Silicone over Asphaltic Restoration 5-Step Info-Sheet - COMCO606
Installation Instructions and Guides
Request a Silicone or Acrylic Roof Coating Sample
Interested in silicone or acrylic roof coatings? Requesting a sample is a great way to see the difference for yourself. Use it to test, adhesion to your roof and ensure our coatings meet your needs
GAF Silicone Coatings Installation Guide
As an easy-to-apply roof coating, silicone creates a highly flexible and monolithic membrane that offers unrivaled ponding water resistance and excellent UV protection, and won’t degrade, chalk, or crack from prolonged exposure to direct sunlight. Learn installation techniques from the pros.
Related Profiles
Village of Orland Park Sportsplex
Liquid Applied Roofing
This sports and recreation destination received energy efficiency with GAF Unisil High Solids Silicone Roof Coating
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