Tile installation on critical substrates | Schlüter-Systems
Foto: Villeroy & Boch

Tile installation on critical substrates

Cracks in tile coverings most often are caused by buckling and cracking of the substrate. 

It is well known among professionals that concrete and screed “shrink” during the curing process and that floating screeds and heated screeds in particular continue to buckle and change shape.  Materials that are subject to extensive movement in relation to rigid tiles are particularly critical. This includes for example wooden substrates such as plywood. However, fresh cement or quick-set screeds and all heated screeds are considered critical as well.

Schlüter®-DITRA relieves stresses that occur between the substrate and the tile covering.

If tiles are adhered directly to such substrates, damage is predictable. 

The uncoupling membrane Schlüter®-DITRA equalizes the stresses caused by deformation of the substrate under the tile covering, protects sensitive substrates from moisture, and neutralizes the vapor pressure of substrates that have not yet fully dried.



Schlüter®-DITRA is a polypropylene mat with square, dovetailed recesses and an anchoring fleece laminated to the underside. In conjunction with tiled coverings, Schlüter®-DITRA forms an uncoupling, waterproofing and vapour pressure equalisation layer.
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Units 3-5 Bardon 22,
Beveridge Lane, Coalville,
Leicestershire, LE67 1TE
Phone: +44 (0) 1530 813396

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