ZIP System by ARFA. Flashing Sealing Tap Adhesive for Window and Roof, 4''X 30', Black ZIP System Flashing Tape is made of an advanced acrylic adhesive, which creates a superior airtight and watertight seal that withstands harsh weather in both roof and wall applications. The tape is quickly and easily applied by hand maximizing job site efficiency. ZIP System Tape is ideal for both seam sealing and flashing, and it can save you time and money on the job, so you can leave the site with confidence it will deliver lifelong performance. Top layer provides good tack during installation for safety. Thick inner layer offers dimensional stability and the carbon black provides a sunscreen that protects other layers. The bonding layer is specially formulated to create a durable bond with the adhesive. Advanced acrylic adhesive layer delivers a lifetime of superior bonding and resists heat and UV light.