DuPont Flashing Tape helps protect the heads and jambs of rectangular doors and windows from air and water intrusion. DuPont Flashing Tape is made from polypropylene film with a butyl rubber adhesive backing. Box includes 4 rolls
In installed system water intrusion testing with no exterior cladding， it performed to ASTM E-331 standards， and shows no leakage at 300 Pa， even after thermal aging to 160°F
Qualified according to the AAMA 711-07 voluntary specification for self-adhering flashing used for installation of exterior wall fenestration products
Compatible with all DuPont Tyvek air and water barriers and other building envelope products
Build in durability and energy efficiency with Tyvek weather barriers that help keep air and water out， and let buildings breathe
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