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Firestone APP Modified Bitumen Roofing Systems are available in a variety of thicknesses in smooth and granule surfaces and are reinforced with a tough, non-woven polyester mat or a trilaminate glass and poly mat, Firestone APP membranes deliver strong rooftop performance and may be installed with a cold adhesive or be heat welded.

Firestone is dedicated to advancing roofing technology, and invests heavily into the innovation of new roofing solutions to significantly strengthen and extend the lifespan of traditional asphalt roofing.


  • Proprietary compounds with select grades of refined asphalt contribute to durability, flexibility, and strength.

  • Elongation properties and flexibility help resist thermal and structural movement, even in cold temperatures, contributing to the longevity of your roofing system.

  • Strength is reinforced with a tri-laminate mat of high tensile fiberglass scrim and woven polyester.


Superior Compound Formulation

Setting our modified products apart from conventional asphalt technology, Firestone has developed proprietary elastomeric blends of polymers combined with select grades of refined asphalt for exceptional durability, flexibility, and strength. Its elongation properties and cold-temperature flexibility allow Firestone modified bitumen roofing systems to resist thermal and structural movement even in temperatures below 0 F.

Our APP Premium FR, features a tri-laminate mat which uses a high-tensile fiberglass scrim interwoven between two non-woven polyester mats. Needle-punching mechanically binds the three layers together, eliminating the risk of mat delamination.

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