Tyvek FlexWrap NF Flashing Tape 6" x 75'

Tyvek FlexWrap NF is a premium, extendable self-adhered flashing tape engineered for long-lasting, water-tight protection in both residential and commercial construction. Formulated with a high-performance butyl adhesive and a flexible, white polymer facer, it delivers outstanding adhesion to non-nailable substrates—such as foam board, fiberboard, and concrete masonry—without the need for mechanical fasteners in flexed corner areas. Whether sealing around windows, doors, or wall penetrations, FlexWrap NF ensures a seamless barrier against moisture and air infiltration.

Easy to handle and apply, this 6" × 75' roll can be stretched and molded into inside or outside corners, irregular shapes, and transitions, simplifying installation and reducing the risk of leaks. When installed according to DuPont’s guidelines, it creates a continuous envelope that enhances building durability, energy efficiency, and occupant comfort.

Key Features

• Extendable, self-adhesive butyl tape for superior weatherproofing
• 6″ width × 75′ length for broad coverage
• 64 mil total thickness for tear resistance and durability
• Flexible design conforms to inside/outside corners and irregular surfaces
• No mechanical fasteners required in flexed corner areas
• Bonds to a variety of substrates: PS foam board, fiberboard, CMU, concrete, and more
• White facer provides a clean finish and UV protection
• Ideal for window and door flashing, transitions, and seam sealing