Asphalt-Saturated Felt Underlayment

Engineered Felt Underlayments

Gorilla Guard® 30 and Gorilla Guard® SPEC 30 are designed to outperform traditional felt roof underlayment by combining specially developed additives with glass fibers. The advanced substrates in the Gorilla Guard® line allow the underlayment to lay flatter, resist wrinkling and reduce slippage. It’s tougher and more resilient, yet easy to handle for a smooth application. The superior quality, time and labor saved by using Atlas engineered underlayment encourages more contractors to offer it to customers as a standard product rather than as an upgrade to traditional felt.

Gorilla Guard 30 Roof Underlayment

Gorilla Guard® 30 Engineered Felt

4-square roll results in less handling time

36% lighter than traditional organic #30 felt

28% stronger substrate reduces need for re-work before applying shingles

Gorilla Guard Spec 30 Roof Underlayment

Gorilla Guard® Spec 30 Engineered Felt

2-square coverage roll

142% stronger in pull-through test

207% high tear strength

Organic Felt Underlayments

#15 Asphalt Saturated

Heavy Organic Mat

High Asphalt Saturation

Heavier Roll Weight

Tightly Wound Rolls – Less Telescoping

Consistent Roll Lengths

Excellent Standard Packaging

Highly Visible Alignment Lines

High Tear Strength

Easier Roll-Out – Less Sticking

Flatter Installation Lay-Down With Less Curling

Five Plants To Serve You Nationwide

#30 Asphalt Saturated

Heavy Organic Mat

High Asphalt Saturation

Heavier Roll Weight

Tightly Wound Rolls – Less Telescoping

Consistent Roll Lengths

Excellent Standard Packaging

Highly Visible Alignment Lines

High Tear Strength

Easier Roll-Out – Less Sticking

Flatter Installation Lay-Down With Less Curling

Five Plants To Serve You Nationwide

Where To Buy

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