Extra protection against weather and storms. Use WeatherLock™ G Granulated Self-Sealing Waterproofing Barrier on the entire roof deck as a secondary water barrier under asphalt shingles, wood shakes and quarry slate roof assemblies. This provides additional security against leaks caused by storms, wind-driven rain and shingle blow-offs. WeatherLock™ G also has a taped selvedge edge to offer improved seal between courses and peace of mind that your roof has an extra layer of protection.
Area |
2 sq. roll – 184 sq. ft. (56.1 m2) |
Length |
2 sq. roll – 66.7 ft. (20.3 m) |
Width |
3 ft. (.91 m) |
Applicable Standards
- ASTM D1970
- ASTM E108/UL 790 (Class A Fire Resistance)^
The performance of any roof depends on an entire system of Roofing Essentials™ accessory products and Owens Corning Shingles working and performing together. Below find our shingle recommendations for this product:
* 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.