GCP PREPRUFE® Tape LT Grade 4" X 49'

Grace Construction Products
Item #
Mfr. Model # GRA-PTLT

GCP PREPRUFE® Tape LT Grade 4" X 49'

PREPRUFE® Tape is 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, and GCP waterproofing membranes and accessories. The top side of the tape has a pressure-sensitive adhesive, a weather-resistant protective coating, and a release liner. Concrete is cast directly against the protective white coating of the tape. The specially developed PREPRUFE® adhesive layers work together to form a continuous and integral seal to the structure.


PREPRUFE® Tape is a 4 in. (100 mm) wide tape used in detail areas including end laps, penetrations, and various tie-ins. It is also used to patch damaged areas in the PREPRUFE® membranes.


Wipe substrates to receive PREPRUFE® Tape and PREPRUFE® CJ Tape clean to remove any dirt, dust or moisture. Clean the surface of penetrations or protrusions with a wire brush to remove dirt, dust, rust and loose particles.

Unroll the tape and adhere to the exposed pressure-sensitive adhesive surface to the membrane or penetration. The protective coating surface of the tape should face toward the concrete to be cast onto the tape.

The use of rollers is required to maximize adhesion. Remove the release liner during application.

Ensure the plastic release liner is removed from all areas of PREPRUFE® Tape and PREPRUFE® CJ Tape. It is recommended that concrete be poured within 56 days (42 days in hot climates) of the application of the PREPRUFE® system. Following proper ACI guidelines, concrete must be placed carefully and consolidated properly to avoid damage to the membrane. Never use a sharp object to consolidate the concrete. Provide temporary protection from concrete over splash for areas of the tape that are adjacent to a concrete pour.

Product Details
Specification Description
Brand Name: Grace Construction Products
Brand Part Number: GRA-PTLT
$208.86 / each

Estimated to ship Thu. May 23.