WinterGuard Metal from CertainTeed

CertainTeed Corp. offers its WinterGuard Metal roof underlayment for metal, shingle, slate or mechanically fastened tile roofs. Designed to be self-adhering and slip-resistant, WinterGuard Metal is developed to be unaffected by high temperatures caused by sun
exposure during installation or when placed under metal roofing. WinterGuard Metal is designed to combat elements such as clogged gutters, high winds, and ice dams that cause water to accumulate on lower sloped roofs, which can cause damage. The product is waterproof, designed not to rip, and seals around nails driven through it.

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