Tyvek FlexWrap™NF

Tyvek FlexWrap™NF


Tyvek® 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.

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  • Helps seal the building envelope when used with DuPont Weatherization Systems products

  • Meets the AAMA 711-13 material standard at the highest classification levels: Class A (no primer) and Level 3 Thermal Exposure (80°C / 176°F for 7 days)

  • Can be installed at external temperatures as low as -4°C (25°F) as long as the surface is clean and free from frost and ice

  • Meets and Exceeds ASTM E331 Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference: no leakage at 300 Pa (equivalent to 50 mph windload), even after thermal aging (0-120°F)

  • Does not contain asphaltic / bitumen adhesive materials which many window manufacturers prohibit due to adverse material reactions, such as black staining, oozing, and deformation over time, particularly with vinyl flanges.

1.6 mm
5.2 m²
white (black adhesive)
Rolls per box:
Temperature resistance:
from - 30 °C till + 80 °C (temporary 100 °C)
ca. 160 % (2.6 x of the original length)
Processing temperature:
> 0 °C
UV resistance:
4 months
Full Information:
Check out the full datasheet available in the Downloads section!

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