Carlisle's Sure-Flex PVC Reinforced Cover strip is an 8" (20.3 cm)-wide, PVC flashing that contains a polyester reinforcing fabric. PVC Reinforced Cover strip is used for stripping in rows of fasteners and plates and covering the butt joints of Sure-Flex PVC and FleeceBACK® PVC membranes. This product's smooth surface allows a total surface fusion weld over a wide temperature range, facilitating a consistent, watertight roof system.