Zerodraft two-component polyurethane insulating air seal kits are installed at junctions between building elements, in voids, gaps, cracks and holes, and around penetrations in a building assembly. One-component poly-urethane foam sealants are for use in wall crevices, at roof-wall connections, at mechanical and electrical penetrations in walls, floors and roofs, and around the perimeter of door and window openings.
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