Gorilla Guard Premium Glass Reinforced Shingle Underlayment
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!
Features & Benefits
- Meets ASTM D 6757 criteria for reinforced underlayments
- Meets performance criteria of ASTM D 4869 Type I
- 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 Signature Select® roofing system
- Better quality product than #30 Felt at similar cost per square
- Florida building code approved - FL 11915
Castlebrook products are available exclusively through Menards®. Menards® is the Northern Midwest U.S. premier provider for building products. Check here to locate a store near you.
A spectrum of choices for your new roof, because Castlebrook shingles provide protection as well as beauty. Choose from a variety of colors, there's sure to be one just right for your castle.
Gorilla Guard roof underlayment for steep slope roof applications. We utilized new technology to create an underlayment with high performance features that out-performs typical organic felt by adding glass fibers.
