About RUBEROID® HW Granule FR Membrane

RUBEROID® HW Granule FR Membrane is a tough, fire-retarding SBS modified bitumen membrane that can be installed without the use of hot asphalt. Its core is a strong, resilient, non-woven polyester mat that is coated with an inherently fire-retardant polymer modified asphalt and surfaced with mineral granules.

  • Typical system guarantees available for up to 15 years; select system constructions available with up to 20-year guarantee coverage1
  • Polyester mat core allows it to resist splits and tears due to its pliability and elongation characteristics
  • RUBEROID® HW Granule FR is backed by GAF, a company with over 130 years in the roofing business
  • No coatings required for Class A ratings from UL and FMRC 

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

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