Schlüter®-KERDI/KERDI-KEBA | Function | Schlüter-Systems


Application and Function

Schlüter-KERDI is a crack bridging waterproof membrane made of soft polyethylene, which has been covered on both sides with a special fleece webbing to anchor the membrane in suitable tile adhesive.

Schlüter-KERDI features imprinted gridlines on one side for easier cutting. In addition to indicating how much material is left, the imprint also shows the minimum overlap width of 5 cm for working with multiple membrane sheets.

Schlüter-KERDI was developed as a bonded waterproofing assembly with ceramic tile and natural stone coverings and is therefore suitable for applications in accordance with the German standards DIN 18531*, DIN 18534, and DIN 18535*. Water exposure classes according to DIN 18534: W0-I to W3-I*.

Furthermore, Schlüter-KERDI features the national technical approval (abP) required in Germany.

Moisture load class according to ZDB: 0 to B0 and A, B and C. Schlüter-KERDI features European Technical Approval (ETA) pursuant to ETAG 022 (watertight covering kits) and bears a CE mark.
* With abP and/or in compliance with ETA according to ETAG 022. Please contact our Technical Department for further information regarding use and installation.

The waterproofing membrane should be bonded to an even, load bearing substrate with an appropriate adhesive. The tiles are laid directly on Schlüter-KERDI using the appropriate adhesive and bedding for the chosen tile or stone. Other suitable trowel applied covering materials or plaster may also be used.

Schlüter-KERDI-DS is a waterproofing membrane and vapour barrier bonded to a tile covering, e.g. for use in swimming pools and spa areas, as well as for commercial applications with high humidity levels.

Vapour barriers are suggested for moisture sensitive substrates such as wood, plasterboard and gypsum plaster.

Accessories for Schlüter-KERDI include internal and external corners, as well as pipe collars.Schlüter-KERDI-PAS sets – consisting of a KERDI-MV collar and a special plastic sleeve – are available for installations involving existing pipe protrusions located within the waterproofing plane that are to be fitted with an internally threaded tap extension. To seal butt joints or corner joints, Schlüter-KERDI-KEBA, in widths of 8.5, 12.5, 15, 18.5 and 25 cm are available.

Schlüter-KERDI-FLEX, in widths of 12.5 cm or 25 cm, is used to seal over expansion joints or flexible edge joints.

Contact Schlüter-Systems Ltd

Units 3-5 Bardon 22,
Beveridge Lane, Coalville,
Leicestershire, LE67 1TE
Phone: +44 (0) 1530 813396

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Further information

on our products and specifications can be found here:

Legend "Products"

We use the following symbols and abbreviations to illustrate our price charts.

image image

= new products

= radius perforation available   


H = height
L = length
B = width

PL = euro pallet 
KV = case packaging 
BV = bundle (there is a 10 item bundle packaging for all the profile types)
P = box packaging 
R = roll
St. = unit