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 25F (-4C) 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 (80C / 176F 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 (0-120F)
Asphalt/bitumen content	Does not contain asphaltic/bitumen adhesive materials
Minimum installation temperature (as stated)	25F (-4C), if surface is clean and free of frost and ice

Frequently Asked Questions (FAQ):

Q: Where is FlexWrap NF typically used?
A: Its 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: Yesit’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: NoFlexWrap NF is designed to avoid mechanical fasteners in the flexed corner areas.

Q: Can it be installed in cold weather?
A: Yesinstallation is noted as possible down to 25F (-4C) if the surface is clean and free of frost and ice.

A Seamless Detail That Elevates the Envelope

Great design is always in the detailsespecially 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. Its the kind of quiet performance that makes a space feel truly finishedconfident, 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.

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