DuPont Tyvek® FlexWrap NF - 9" x 75ft

A self-adhering butyl flashing that integrates with DuPont™ air and water barriers, DuPont™ FlexWrap™ is a one-step solution for keeping water from seeping through window and door sills. DuPont™ FlexWrap™ self-adhered flashing does not require mechanical fasteners, even in flexed corner areas around building openings. This allows it to provide easy, one-step insulation for hard-to-seal corners around windows and doors. DuPont™ FlexWrap™ is designed to help protect vulnerable corners against air and water intrusion as part of a complete DuPont Building Envelope Solution. It’s effective across a range of window and door designs and a wide range of typical wall substrates, including OSB, plywood, gypsum, concrete masonry unit (CMU) and other non-nailable sheathing materials.

• Adheres to most common building materials
• Can be installed at external temperatures as low as -4°C (25°F) as long as the surface is clean and free from frost and ice
• Extendable flashing constructed with a durable, microcreped DuPont™ top-sheet, a premium butyl adhesive layer, and a specially designed release liner
• Designed to withstand up to 270 days of UV exposure
• 100% butyl adhesive performs through extreme temperatures
• Does not contain asphaltic/bitumen adhesive materials which many window manufacturers prohibit due to adverse material reactions, such as black staining, oozing, and deformation over time, particularly with vinyl flanges.