Epoxy Primer

Epoxy Primer

Why GAF Epoxy Primer?

Epoxy Primer is designed to penetrate and seal porous substrates and to improve the adhesion of high-performance top coats. It helps to “solidify” punky or chalky conditions; increases the bond of acrylic, polyurethane, butyl, and epoxy top coats to a variety of surfaces.


  • Adhesion:  Penetrates and “wets” into porous surfaces, imparting a tenacious chemical and  physical bond between the substrate and subsequent top coat.
  • Non-dusting:  Penetrates deeply to eliminate concrete dusting, providing for easy cleanup and minimum maintenance.
  • Deep Penetration:  Low viscosity allows for penetration into dense surfaces such as smooth-troweled concrete floors, oriented strand board, fiberglass, and various types of metal surfaces.
  • Anti-Spalling:  Helps protect against the intrusion of destructive salts, oils, solvents, and gasoline. Also helps prevent spalling and pitting caused by freeze/thaw cycling


  • Epoxy Primer develops a tenacious bond to aluminum, asphalt, concrete, fiberglass, galvanized metal, steel, and wood.
  • Epoxy Primer forms an effective bond under various coatings and polyurethane foam.
  • Epoxy Primer will effectively solidify punky or chalky concrete or masonry surfaces when used as a primer prior to top coating.
  • Although Epoxy Primer will greatly enhance the adhesion of various top coats over metal surfaces; it is not designed to add to the corrosion resistance of the system beyond what the top coat provides.

Product Properties

*High humidity and/or low temperature will slow cure and re-coat times.
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