Owens Corning WeatherLock Mat (200 Sq. Ft.) Ice and Water Barrier

WeatherLock Mat Self-Sealing Ice and Water Barrier is designed to act as an additional line of protection against damage due to shingle blow-off, wind-driven rain and ice damming. Now with SureStep Technology, it helps protect even more. WeatherLock Mat provides a secondary water barrier under shingles to deliver the weather protection you expect.

• 40% lighter than competitive products making it easier install
• Flexible ice and water shield for vulnerable sections of roof
• Slip-resistant surface for excellent traction and safe install