PREPRUFE® CJ Tape

PREPRUFE® CJ Tape is a specially formulated, double-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.

Category: Water Proofing Accessories

Description

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® CJ Tape is supplied in rolls and is interwound with a silicone coated release liner.

Use

PREPRUFE® CJ Tape is used at construction joints in concrete that is cast against it. It is also used to patch damaged areas in the PREPRUFE® membranes or in critical areas where a wider tape is required.

The tape is a critical component of the PREPRUFE® system since it is designed to develop a continuous mechanical bond to concrete that is cast against it.

Supply

PREPRUFE CJ Tape LT* or HC*
Thickness (nominal)*	0.7mm
Roll Size	200mm x 15.0m
Roll Weight	4kg
Minimum Edge / End Laps	75mm

^{*LT denotes ambient temperature between –4ºC and +30ºC}
^{*HC denotes application temperature between +10ºC and +40ºC}
^{*Nominal thickness refers to the thickness of the tape without release liner.}

Application

Apply PREPRUFE® CJ Tape when ambient temperatures are -4 ºC or above. Select correct LT or HT grade for the application temperature experienced. Wipe PREPRUFE® membranes 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 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.

Use heavy hand pressure or a hand roller to maximise adhesion. Remove the release liner during application. Cast concrete or apply shotcrete within 30 days of application of the tape.