New WeatherLock® Flex Flexible Self-Sealing Ice & Water Barrier provides better protection against cracking and deck damage from freeze/thaw cycling, wind-driven rains and normal water flow around eaves, rakes, valleys, vents, chimney and skylights.

Engineered for asphalt shingles, wood shakes and quarry slate roof assemblies, this high performance solution is flexible and pliable. Its poly surface and rubberized asphalt combine to adhere around irregular shapes, inside corners and sharp angles, even in cold-weather applications to 40°F.