Gorilla Guard high performance underlayment for steep slope roof applications. Made to order for the true professional. Contractors across the country told us what they wanted in a high quality underlayment. We utilized new technology to create an 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 is just one more reason from Atlas to thump your chest and roar!

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Quick Overview

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

Glass fiber reinforced, organic felt underlayment

Strong/tough

Lays flatter on deck in wet conditions

Highly resistant to wrinkling

Reduces the likelihood of slipping for increased safety

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

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Manufacturer: Atlas Roofing Corporation

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Gorilla Guard Premium Glass Reinforced Shingle Underlayment

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