Preprufe Tape and Preprufe CJ Tape are specially formulated two sided, reinforced pressure sensitive tapes. The bottom side of the tape has a highly aggressive pressure sensitive adhesive which is designed to adhere to penetrations, protrusions and Grace waterproofing membranes and accessories. The top side of the tape has a pressure sensitive adhesive, a weather resistant protective coating an a release liner. The specially developed Preprufe adhesive layers work together to form a continuous and integral seal to the structure. Concrete is cast directly against the top adhesive side of the tape.

Preprufe Tape LT Grade is used in temperatures between 25 °F (-4 °C) and 86 °F (+30 °C).