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Gorilla Guard® EVERFELT™ Engineered Roof Underlayment


Gorilla Guard® EVERFELT™ high performance roof underlayment is the underlayment of choice for steep slope roofs. It is made to order for the true professional. Contractors across the country told us what they wanted in a high quality roofing underlayment. We utilized new technology to create an roof underlayment with high performance features that out-performs typical organic felt by adding glass fibers. You’ll save time – and labor costs – by using the right product the first time.

Gorilla Guard Roof Underlayment Benefits

  • Meets ASTM D 6757 criteria for reinforced underlayments

  • Meets performance criteria of ASTM D 4869 Type I and Type III (#15 & #30 Standard), ASTM D 226 Type I (#15)

  • Convenient four square coverage rolls; less waste and less handling

  • UL Classified as roofing accessory

  • Highly resistant to wrinkling

  • Resists tear away from fasteners when walked on or in strong wind when properly installed

  • Meets shingle underlayment requirements for the Atlas Signature Select® roofing system

  • Better quality product than #30 Felt at similar cost per square

  • Florida building code approved  - FL 11915

Atlas offers homeowners UPGRADED coverage on their Premium Protection Period for any Atlas Signature Select® Roofing System. This product qualifies for use in the Atlas Signature Select® Roofing System when used in combination with other qualifying Atlas products. For more information download the Atlas Signature Select® Warranty.


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Roof Underlayments