Description
FlexWrap NF flashing membrane roll
DuPont Tyvek FlexWrap NF is a premium, extendable self-adhered flashing membrane designed to provide seamless air- and water-barrier protection at window and door corners. Its micro-creped Tyvek top-sheet and 100% butyl adhesive help create a durable seal on a wide range of building substrates, including non-nailable sheathing.
Key Features:
- Seamless Corner Protection: Designed for air- and water-barrier continuity at window and door corners, sills, and arched openings.
- Extendable Conformability: Flexes to wrap corners and custom/round-top windows without piecing multiple sections.
- Butyl Adhesive System: Built with a premium 100% butyl adhesive layer and split-release liner for secure bonding.
- Broad Substrate Compatibility: Applies to many building materials, including non-nailable sheathing such as foam board, fiberboard, and CMU.
- Cold-Weather Install Capability: Can be installed at exterior temperatures down to 25°F (-4°C) when surfaces are clean and free of frost/ice.
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Product name | DuPont Tyvek Flexwrap NF 6″ x 75′ |
| Category | Flashing |
| Sub category | Window, Door & Wall Penetration Flashing Membranes & Tapes |
| Unit of measure | RL – Roll |
| Roll size | 6 in x 75 ft |
| Product type | Extendable self-adhered flashing membrane |
| Primary application | Air and water barrier protection at window and door corners; window sill and arch-top head conditions |
| Top-sheet material | Micro-creped DuPont Tyvek top-sheet |
| Adhesive | 100% butyl adhesive layer |
| Release liner | Split-release liner |
| Mechanical fasteners required in flexed corners | No |
| Substrate compatibility (examples) | PS foam board, fiberboard, concrete masonry unit (CMU), and other building materials |
| AAMA standard | Meets AAMA 711-13: Class A (no primer) and Level 3 Thermal Exposure (80°C / 176°F for 7 days) |
| ASTM water penetration performance | Meets/exceeds ASTM E331: no leakage at 300 Pa (equivalent to 50 mph windload), even after thermal aging (0-120°F) |
| Asphalt/bitumen content | Does not contain asphaltic/bitumen adhesive materials |
| Minimum installation temperature (as stated) | 25°F (-4°C), if surface is clean and free of frost and ice |
Frequently Asked Questions (FAQ):
Q: Where is FlexWrap NF typically used?
A: It’s designed for flashing at window and door corners, and for seamless application along window sills and arch-top head conditions.
Q: What is FlexWrap NF made of?
A: It uses a durable micro-creped DuPont Tyvek top-sheet, a premium 100% butyl adhesive layer, and a split-release liner.
Q: Can it be applied to non-nailable substrates?
A: Yes—it’s described as applicable over a wide range of materials including foam board, fiberboard, and concrete masonry unit (CMU).
Q: Does it require mechanical fasteners in corners?
A: No—FlexWrap NF is designed to avoid mechanical fasteners in the flexed corner areas.
Q: Can it be installed in cold weather?
A: Yes—installation is noted as possible down to 25°F (-4°C) if the surface is clean and free of frost and ice.
A Seamless Detail That Elevates the Envelope
Great design is always in the details—especially the ones you never see. FlexWrap NF brings a beautifully continuous seal to the vulnerable corners of windows and doors, wrapping curves and arches with a clean, uninterrupted gesture. Pair it with a cohesive weatherization system to create an exterior shell that feels as intentional as the interiors you curate. It’s the kind of quiet performance that makes a space feel truly finished—confident, protected, and luxurious.
Choose DuPont Tyvek FlexWrap NF 6″ x 75′ to create a seamless, durable seal around windows and doors for added air- and water-barrier protection.
