Willseal 5/8" x 1" x 14-1/2' 600 Expansion Joint Sealant

SKU: 547639

Willseal® 600 Expansion Joint Sealant is a pre-compressed, self-expanding foam joint sealant, engineered to perform as a highly flexible, weather-tight, primary seal in vertical exterior applications. Willseal 600 can also provide the ideal foundation for a large variety of wet sealants, such as silicone, polyurethane, polysulfide, and acrylic if desired. Unlike conventional wet sealant and backer rod methods, Willseal 600 is not susceptible to breakdowns caused by excessive or rapid joint movements, thus protecting structures against rain, wind, dust, and sound. Willseal 600 is waterproof to a wind driven rain yet it is vapor permeable, making an optimal addition to any air barrier system, cavity wall joint, and interior partition application.

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