An integral component of DuPont Weatherization Systems, DuPont™ FlexWrap™ NF is a conformable, self-adhesive flashing solution for sills and non-straight portions of windows, doors and other wall penetrations.

DuPont™ FlexWrap™ NF is a premium performance, extendable self- adhered flashing material that can be applied over a wide range of building substances, including non-nailable sheathing materials like PS foam board, fiberboard, concrete masonry unit (CMU) and other such materials. Unlike competitive products, DuPont™ FlexWrap™ NF does not require the use of mechanical fasteners in the flexed corner areas. 

DuPont™ FlexWrap™ NF also flashes round-top or custom-shaped windows in a seamless manner, eliminating the need to cut and place individual pieces of conventional flashing on an arched opening.

Features

• Superior protection from water damage
• 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)
• 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 wind load), 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
• 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 Helps to facilitate the creation of airtight and watertight seals around windows, door sills, chimney breasts, pipe penetrations, and any custom shapes
• Designed to withstand up to 270 days of UV exposure
• 100% Butyl adhesive performs at extreme temperatures
• Adheres to most common building materials