HW 25 SMOOTH Membrane

HW 25 Smooth Membrane

HW 25 Smooth Membrane

Why RUBEROID® HW 25 Smooth Membrane?

RUBEROID® HW 25 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, polymer-modified asphalt.


  • System guarantees are available for up to 20 years1
  •  Installed roof designs weigh less than two pounds per square foot
  • Combines the strength of fiberglass reinforcement with the elongation characteristics of SBS-modified asphalt
  • RUBEROID® HW 25 Smooth is backed by GAF, a company with over 130 years in the roofing business
  • Available as a smooth surface


  • RUBEROID® HW 25 Smooth is designed for new roofing and re-covering applications as well as in the construction of flashings.
  • RUBEROID® HW 25 Smooth is an ideal base or interply roofing membrane in modified bitumen systems.

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


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