Owens Corning WeatherLock Mat Roofing

The Owens Corning WeatherLock Mat Ice & Water Roofing Barrier offers durable, secondary protection beneath shingles, wood shakes, and quarry slate roofs. Designed to create a watertight seal at vulnerable areas like valleys and corners, it helps safeguard against ice dams and wind-driven rain. This granulated, self-sealing underlayment forms a strong barrier over nails and roof gaps, delivering added defense where you need it most. Built to resist cracking and breaking during installation, this mat roofing maintains flexibility in cold conditions for easier handling. For optimal performance, the WeatherLock barrier should be covered within 30 days of installation.

To learn more about the different types of underlayment, click here.