Butyl tape with aluminium lamination

The surfaces to be sealed must be dry, capable of bearing load and free from grease and dust. The application temperature should not be below +10°C. Absorbent and porous surfaces must be pre-treated with Würth butyl/bitumen primer (art. no. 0892875).

To obtain good initial adhesion to the surface, the tape should be pressed onto the surface and smoothed using a press-on roller (art. no. 0693011756). Folds and creases should be avoided.

Butyl has a "cold flow" tendency (flow characteristic of the tape). Therefore, the tape should always be fitted with a press-on profile to prevent the seal from slipping as a result of, for example, the weight of snow or backed-up water. However, using excessive contact pressure on the profile will cause the sealing compound to be "pushed out". Also, never compress the butyl tape to the zero point (use the supplied disc as a spacer)!

The adhesive surface of the sealing tape must be at least 1/3 (per contact surface) of the tape width when gluing over joints. Overhead adhesion tasks are not permitted without additional mechanical fixings. When sealing glass retainer profiles, the rubber profile must not lie on the sealing tape. The width of the butyl tape must be selected such that the tape is located between the rubber profiles.