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B.2 Covering assemblies with bonded drainage over bonded waterproofing assemblies

The sloped support structure is protected against the permeation of water with a Schlüter®-KERDI bonded waterproofing assembly, which is produced with a dry set mortar in the thin-bed method. The passive capillary bonded drainage membrane Schlüter®-DITRA-DRAIN is installed in the thin-bed mortar between the waterproofing layer and the tile covering. This results in the broad ventilation of the top covering, which in turn promotes the quick and even drying/curing of the thin-bed mortar. The uncoupling function of Schlüter®-DITRA-DRAIN neutralises any stresses occurring in the substrate.

Schlüter®-DITRA-DRAIN as a bonded drainage and bonded uncoupling membrane over a Schlüter®-KERDI bonded waterproofing assembly

  1. Capillary layer

  2. Concrete slab

  3. Sloped screed

    The construction has to be sufficiently sloped (1.5 - 2%) to allow for proper drainage.

  4. Schlüter®-KERDI

    Polyethylene waterproofing membrane installed in thin-bed mortar. Joints are sealed with the sealing adhesive Schlüter®-KERDI-COLL.

  1. Schlüter®-DITRA-DRAIN

    Polyethylene drainage mat installed using the thin-bed method, for bonded drainage, ventilation and uncoupling. It is important to ensure a drainage channel.

  2. Ceramic/stone tiles or natural stone pavers

    Installed (including large format) with a waterproof and weather resistant dry set mortar.

Balcony assembly: Tile installation with drainage, waterproofing, and uncoupling




Contact Schlüter-Systems Ltd

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

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