Product Description

DCI Tape W12 is a flexible, alkali-resistant tape for sealing and waterproofing joints, compatible with DAST waterproofing products.

Field of Application

· It is used for waterproofing corners between adjacent walls and between walls and floors before treating with waterproofing products.

· It is used as flexible waterproofing of expansion joints on terraces and balconies, etc.

· It is used for sealing pipes and drains in bathrooms, showers, and kitchens.

· It is used for sealing expansion joints in precast panels.

Product Details

Product identity

Tensile strength (according to EN 12311-2, Method B) (N/mm²): 2.5
Elongation (according to EN 12311-2, Method B) (%): 380
Tear resistance (according to EN 12310-2) (N): 150
Alkali resistance (according to EN 1847 and EN ISO 527-3) (%): 35
Vapour diffusion strength coefficient (µ): 47,000


DCI Tape W12 is supplied in 10m roll with 12 cm width.

Application Procedure

Preparing the product

Ready to be installed.

Applying the product

Firstly, apply a thin layer of the waterproofing product at least 1 mm thick, to both sides of the corners and expansion joints to be waterproofed with DCI Tape W12. Apply the fabric side of the DCI Tape W12 tape over the fresh layer of the waterproofing product, using a smooth trowel. It is essential that the waterproofing material to be wet on both sides of the DCI Tape W12, also the rubber tape, for a width of several mm. For movement joints (i.e., in terraces), DCI Tape W12 must be positioned in the shape of an omega Ω. Joints between Isoband strips must be sealed with the appropriate PU sealant.