PREPRUFE Tape is a specially formulated, two sided, reinforced, pressure-sensitive tape. The bottom side of the tape has a highly aggressive, pressure-sensitive adhesive which is designed to adhere to penetrations, protrusions, PREPRUFE® and BITUTHENE® Membranes. The top side has another layer of adhesive and a protective coating. The protective coating protects the tape from the weather and UV light for up to 30 days after application. A thin, flexible film is sandwiched between the two layers of pressure- sensitive adhesive. The tape develops a continuous mechanical bond with the concrete that is cast against it. PREPRUFE® Tape is supplied in rolls and is interwound with a silicone coated release liner.