Schlüter®-KERDI-DRAIN | Material | Schlüter-Systems



Depending on the type, drain bodies are made of high-impact polypropylene (PP) or acrylonitrile butadiene styrene (ABS). The thin-set insert consists of acrylonitrile butadiene styrene (ABS) with a bonding flange that features a fleece-covered surface.

Schlüter®-KERDI Collar is a crack-bridging waterproofing membrane made of soft polyethylene (PE) and covered on both sides with a special fleece webbing to provide a solid bond to the tile adhesive. It enables the secure connection of the thin-set insert to the bonded waterproofing assembly in the floor area. In conjunction with the waterproofing systems Schlüter®-KERDI, Schlüter®-DITRA 25, Schlüter®-DITRAHEAT, Schlüter®-KERDI-BOARD as well as Schlüter®-KERDI-SHOWER and the associated system sealing adhesives Schlüter®-KERDI-COLL-L or Schlüter®-KERDI-FIX, this results in certified bonded waterproofing assemblies with a connected drainage.

Schlüter®-KERDI-DRAIN is a system component that complies with the German waterproofing standard DIN 18534 and features national technical approval (abP) in conjunction with the above-mentioned Schlüter systems. The moisture load groups according to abP can be found in the respective product data sheets. Pursuant to ETAG 022 (watertight covering kits), Schlüter®-KERDI-DRAIN is a component of a system with European Technical Approval (ETA). The above-listed Schlüter products tested with KERDI-DRAIN bear a CE mark. The stainless steel grate is made of V2A (material no. 1.4301= AISI 304), but can also be supplied in stainless steel V4A (material no. 1.4404 = AISI 316L).

Material properties and areas of application:

The drain casings, thin-set inserts, and covers are classified as K3 pursuant to DIN EN 1253, “Drains for buildings.”
This classification refers to surfaces without vehicular traffic, such as wet areas in apartments, senior residences, hotels, schools, washing and shower installations, as well as terraces, patios, and balconies.
Drains installed in areas that may be exposed to freezing temperatures must not have an odour trap. If an odour trap is required, it must be installed at a different location where it is protected from freezing, for example within a building.
The horizontal drain casing of the floor drain set KD BH 50 GV has an inlet and an outlet. The inlet is covered with a factory-installed cap, which can be removed and connected, e.g. to a sink, in order to ensure regular refilling of the odour trap.
Grates made of stainless steel 1.4301 (V2A) or 1.4404 (V4A) are particularly well suited for applications that, in addition to high mechanical stresses, require resistance to chemicals such as acidic or alkaline media, cleaning agents, or de-icing salts. Depending on the anticipated stresses, customers can choose between the alloy materials 1.4301 or 1.4404. The use of 1.4404 is recommended if consistent chemical exposure is expected, for example in the case of swimming pools (fresh water). Even stainless steel is not resistant to all chemical stresses, and may be affected by, e.g., hydrochloric and hydrofluoric acid or certain chloride and brine concentrations. In certain cases, this also applies to seawater pools. Special anticipated stresses should therefore be verified in advance.


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

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

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= 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