Suitable for use on plywood, OSB, PVC, steel, aluminum, and masonry, Form Flash 1 seals around fasteners to prevent water intrusion. The tape comes in 15-foot rolls in 4- or 6-inch widths and can stretch to fit irregular surfaces and odd angles. In addition to serving as a permanent air/vapor barrier, Form Flash 1 is also an insect and pest barrier. Ideal for sealing gaps between wall surfaces and service components, the material can help boost the energy efficiency of a building envelope. 800.759.9727.