Schlüter®-DITRA-DRAIN | Installation | Schlüter-Systems



  1. Always check the substrates on which Schlüter-DITRA-DRAIN is to be installed for evenness, load bearing capacity, bond strength and compatibility of materials. Remove all surface components that may weaken the bond. Repairs of uneven spots or adjustments in height and slope must be carried out before installing the waterproofing mat and Schlüter-DITRADRAIN. The waterproofing layer must be sufficiently sloped to allow for proper drainage.
  2. To install Schlüter-DITRA-DRAIN 4, apply a standard dry set mortar to the substrate described above with a 6 mm x 6 mm notched trowel, using the thin set method. A 3 x 3 mm or 4 x 4 mm trowel is recommended for Schlüter-DITRA-DRAIN 8. The selected thin bed adhesive for adhering Schlüter-DITRA-DRAIN must be suitable for the substrate. If using covering materials with a lateral length ≥ 30 cm, we recommend a water-binding tile adhesive for rapid curing and drying.
  3. Schlüter-DITRA-DRAIN is cut to size, embedded in the applied adhesive and immediately pressed into the thin bed adhesive with a float or a roller. When working with Schlüter-DITRA-DRAIN 4, ensure that the inverted truncated pyramid shaped chambers are completely filled with adhesive after installation. Observe the curing times of all materials. It is best to align Schlüter-DITRA-DRAIN with light tension at the time of embedding the material. The individual sheets are installed with tightly abutting joints. The lateral fleece edge overlaps the joints. The self adhesive joint sealing tape Schlüter-DITRA-DRAIN-STU is available for cut edges without fleece overlap.
  4. It is recommended to use walking boards (especially in the centre of the assembly for material transport) to protect the installed Schlüter-DITRA-DRAIN mat from damage or to prevent it from peeling off the substrate. Protective measures may also be required if the material is exposed to direct sunlight or precipitation in outdoor areas.
  5. The tile or natural stone covering can immediately be installed after adhering Schlüter-DITRA-DRAIN. The covering materials must be fully embedded in the adhesive. Select the notch size of the trowel to match the tile format. The curing times of the thin-bed adhesive are to be observed. The dry set adhesive and the covering materials installed in outdoor areas must be waterproof and weather resistant.
  6. Once the covering is ready to bear weight, a suitable grout may be used.
  7. In outdoor areas, the open drainage space at the edges must be covered with a profile such as Schlüter-BARA-RT or an angled plate without closing off the drainage channel.
  8. Please observe the instructions regarding intermediate, perimeter and connection movement joints within this data sheet and other professional standards.
    We recommend the use of our Schlüter-BARA and Schlüter-DILEX profiles for edges, movement joints and wall connections.

Contact Schlüter-Systems Ltd

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

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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