DuPont™ FlexWrap™ NF 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™ NF 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
• Resistant to water

• https://assets.unilogcorp.com/187/ITEM/DOC/Tyvek_102349592_Specification_Sheet.pdf Specification Sheet