Please ensure Javascript is enabled for purposes of accessibility Diamond Deck® | CertainTeed Skip to main content

Mega Menu


CertainTeed's DiamondDeck® is a high-performance synthetic underlayment designed for use in residential roofing applications. This premium underlayment offers superior protection and durability, making it an ideal choice for a wide range of roofing systems. DiamondDeck® is made from a unique polypropylene and polymer composite material, making it highly resistant to tears, punctures, and impacts. This advanced material ensures that the underlayment remains intact and functional, even under the harshest weather conditions. One of the key benefits of DiamondDeck® is its exceptional slip resistance. The underlayment features a special slip-resistant surface that provides a secure footing for installers and contractors, even on steep roof pitches. This feature helps to ensure safety during installation and reduces the risk of accidents or injuries. DiamondDeck® also offers superior water resistance. The underlayment forms a water-resistant barrier that helps to prevent moisture intrusion and protects the roofing system from damage caused by water infiltration. This water-resistant barrier is essential for ensuring the longevity and durability of the entire roofing sys...See More

Features & Benefits

CertainTeed Integrity Roof System combines key elements that help ensure you have a well-built roof for long-lasting performance.
Certaseal seals roofs tight against wind and weather. Fire resistant Wind resistant Tear resistant Wind Driven Rain resistant
The roof of a house is covered with DiamondDeck underlayment.

Have More Questions?

Whether you're just starting a new project or are already in the swing of things, our customer experience team is here to help!

Contact Us