About RUBEROID® 20 Smooth Membrane

RUBEROID® 20 Smooth is a tough, resilient modified bitumen membrane manufactured to stringent GAF specifications. Its core is a strong, resilient non-woven glass mat that is coated with flexible, SBS polymer-modified asphalt. RUBEROID® 20 Smooth is backed by GAF, a company with over 130 years in the roofing business.

  • System guarantees are available for up to 20 years1

1See applicable warranty or guarantee for complete coverage and restrictions.

Featured Benefits

Product Documentation

GAF Commercial Chairmain Circle trophy

GAF Commercial Chairman’s Circle

The GAF Commercial Chairman’s Circle recognizes exceptional contractors in the commercial roofing industry. Each year, GAF invites contractor businesses to join this key partnership based on shared business commitment, reputation, loyalty, capability, and philanthropy.