Made with a top sheet of DuPont^™ Tyvek^® – one of the most trusted weatherproofing brands on the market today – DuPont^™ StraightFlash^™ is ideal for helping to protect the heads and jambs of windows and doors. By bridging the interface between the fenestration and the water-resistive barrier, this premium self-adhered flashing material protects these vulnerable areas from potential water damage.