A fastener-free way to prevent water intrusion
A self-adhering butyl flashing that integrates with DuPont air and water barriers, 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. 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.
|Helps seal the building envelope||
|High adhesion performance||
|Extendible flashing material||
|Water Vapor Permeability||ASTM E96||perm||<1|
|Water Penetration Resistance||ASTM E331||Pa||No leakage at 300 Pa|
|ASTM E331 after thermal aging (0-120°F)||-||No leakage at 300 Pa|
|Application Temperature||-||-||Best when installed above 25°F|
|Material Standard||-||-||Class A (no primer)|
|-||-||Level 3 Thermal Exposure (80°C/176°F for 7 days)|
|DuPont™ FlexWrap™ NF||64 mm (1620 microns)||6” x 75’, 9” x 75’, 9” x 15’|