Door & Window Flashing

Window and Door Flashing Tape used around nailed fins/flanges to eliminate air and water intrusion. Makes penetrations air tight, adds to ENERGY STAR rating of home. The flexibility conforms and seals around irregular surfaces.

Professional results that a DIYer can be proud of begins with Window and Door Flashing Tape by Nashua. This tough and durable flashing tape seals around window and door installations to prevent water and air penetration. Helps to defend against mold, mildew and premature decay. Nashua Tape. Trusted by professionals. DIY approved. Count on Nashua to get the job done right.

ZIP System stretch tape easily stretches to fit sills, curves and corners with a single piece without having to piece tape segments together. Made of a high performance composite acrylic, the tape conforms to challenging applications and locks out moisture even over mismatched surfaces. ZIP System stretch tape can be pulled up and reapplied for easy, fast and hassle-free installation that provides the right seal against weather intrusion.

A tough-faced superior self-adhering, air/vapor barrier and waterproofing membrane for vertical and horizontal above grade substrates; BT25XL seals window perimeters to building substrates to create an impenetrable barrier. This 25-mil polyethylene-backed aggressive rubberized adhesive membrane can be applied to vinyl, plywood, OSB, concrete, metal, aluminum, polyethylene, building wrap products, block and masonry surfaces to form an air/vapor moisture barrier system. BT25XL is the only window sealing tape that can be installed and left exposed for 120 days without UV degradation. Since BT25XL is a peel and stick self-adhering membrane, you simply center the tape over the area to be sealed and firmly roll and press into place. BT25XL also seals itself around nails, screws and staples. Not only will BT25XL waterproof around doors and windows, it stops air leakage, thus reducing heating and cooling costs.