Underlayment

Unpredictable weather is no match for a well-protected roof! Safeguard your most valuable asset from wind-driven rain and snowstorm induced ice dams with a durable underlayment solution.

Ensure Roofing Excellence

As the industry's leading roofing underlayment provider, CertainTeed is proud to offer the widest range of both mechanically fastened and self-adhered solutions on the market. No matter your roofing project's unique needs, we have the perfect underlayment to exceed your expectations.

View Products

Roofer installing roof runner with weathered wood Landmark shingles

TRG Multimedia

Product Line-up

Grace Ice & Water Shield®

Its self-adhesive properties ensure a secure and watertight seal, preventing any moisture from seeping through vulnerable areas of your roof.

RoofRunner®

Synthetic roofing underlayment that provides a durable and reliable secondary layer of protection for your roof. Highly resistant to tearing, puncturing, and UV degradation, ensuring long-lasting performance.

TRG Multimedia

WinterGuard®

With its aggressive self-sealing adhesive strip, WinterGuard ensures a secure bond to the roof deck, eliminating the risk of wind uplift and ensuring reliable protection against ice dams.

TRG Multimedia

Diamond Deck®

A high performance synthetic, scrim-reinforced, water-resistant underlayment that can be used beneath shingle, shake, metal or slate roofing.

Grace Ice & Water Shield

Setting the standard in waterproofing performance underlayments for the last 45+ years!

Grace Ice & Water Shield is the ultimate solution for safeguarding your roof against the harshest elements. When it comes to protecting your home or building, Grace Ice and Water provides unmatched defense against water infiltration and ice damming. Offering exceptional durability and long-lasting performance.

View Products