Reflectix 3.5 In. X 50 Ft. Polyethylene Foam Sill Sealer

The Reflectix Sill Sealer is designed to reduce air leakage between the foundation wall and the sill plate. It can additionally be used to seal around window and door frames. The product is applicable for residential and commercial construction, slab on grade, and in crawl spaces or basements. This product consists of ribbed polyethylene foam (total thickness 3/16"). 15 year limited warranty.