DeckLock™ Roof Underlayment is engineered to protect what matters most-the homes people build, the professionals who stand behind every roof and the families sheltered beneath it.

Designed as a high-performance synthetic roofing underlayment, DeckLock™ helps defend the roof deck during construction and throughout the life of the roofing system. Built with premium materials, its lightweight, jobsite-ready design supports easier installation while delivering the strength, durability and walkability contractors depend on. From construction delays to harsh weather and demanding jobsite conditions, DeckLock™ provides dependable protection that helps keep homes stronger, drier and protected through every season.