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WeatherLock™ Flex Flexible Self-Sealing Ice & Water Barrier

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WeatherLock™ Flex Flexible Self-Sealing Ice & Water Barrier provides excellent roof deck protection against cracking and deck damage from freeze/thaw cycling, wind-driven rain and normal water flow around eaves, rakes, valleys, vents, chimneys and skylights.

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

Area 2.25 sq. roll – 225 sq. ft. (20.9 m2)
Thickness 43.7 mils.
Length 75 ft (22.86 m)
Width 3 ft. (.91 m)

Applicable Standards

  • ASTM D1970
  • ASTM E108/UL 790 (Class A Fire Resistance)^

* See actual warranty for complete details, limitations and requirements.

^ Underlayment is tested as part of a rood assembly that includes wood decking, underlayment and shingles.