GMC Roofing Felt Underlayment

GMC Roofing Felt Underlayment


GMC Roofing Felt is an industry leading, superior quality “authentic” asphalt saturated organic felt underlayment.  All GMC products meet various ASTM standards.

GMC 15 D 4869 Type I authentic asphalt saturated organic felt underlayment is used as a breathable secondary weather resistant barrier when applied over the roof deck prior to the installation of the primary roofing product.

Features and Benefits

  • Required Note: (Approved underlayment is required to validate warranty on most all roofing systems.)
  • Compatible Recommended for use with roofing systems when ASTM D 226 is not required.
  • Easy to apply No special fasteners required. (Note: Plastic cap nails help seal around nail holes.)
  • Cost effective Convenient roll size, 400 sq. ft. coverage with salvage edge, minimizes job loss and excessive waste.
  • Permeable Breathable membrane to help prevent dry rot, mold and other structural damages.
  • Walk-able Natural non skid surface ideal for steep slope roofing.
  • Durable Manufactured for maximum performance.
  • Eco–friendly Organic dry felt is made from 100% post consumer recycled material and domestic asphalt from a local source. Note: (Leed points may be available)
  • USA Owned Jobs for local residents, good for the economy. GMC is a proud supporter of several national and and Operated local charities.

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