Schlüter Systems DITRA - HEAT

Schlüter Systems DITRA - HEAT is a polypropylene membrane with a cut-back stud structure and an anchoring fleece laminated on the underside. It is a universal substrate for tile coverings, which serves as an uncoupling, crack bridging, waterproofing, vapour pressure equalization layer and is designed for the attachment of heating cables.

Schlüter Systems DITRA - HEAT - DUO features a 2 mm special anchoring fleece on the underside, which bonds with the adhesive, while also reducing impact sound and enabling a faster heat-up response. The substrate for the installation of DITRA-HEAT must be level and ready to bear weight. DITRA-HEAT is installed in thin-bed adhesive suitable for the substrate with a notched trowel (recommended size: 6 x 6 mm). The anchoring fleece on the underside of DITRA-HEAT is then fully embedded in the adhesive to ensure a mechanical bond of the fabric in the adhesive. The curing window of the adhesive has to be taken into consideration. In floor areas, the heating cables can be installed immediately after adhering DITRA-HEAT matting with a minimum spacing of 9 cm (every third stud ≙ 136 W m²).

In the case of wall installation, the heating cables are installed once an adequate adhesive bond has been reached. Installers can choose between installation spacing of 6 cm (every second stud ≙ 200 W m²) and 9 cm (every third stud ≙ 136 W m²). The tile or stone covering is professionally installed directly over DITRA-HEAT membrane in accordance with the applicable standards. The bed adhesive bonds with the cut-back stud structure of the DITRA-HEAT membrane.

DITRA-HEAT / -HEAT-DUO is waterproof and can withstand all chemical stresses that typically occur in conjunction with tile coverings. Where required, an approved bonded waterproofing assembly can be created with DITRA-HEAT / -HEAT-DUO in specific areas.

The cable tester DITRA-HEATE-CT is designed to measure and verify the resistance of the electrical heating cables DITRA-HEAT-HK and the remote sensors included with the thermostats DITRA-HEAT-E. The device monitors the resistance of the heating cables during the entire installation phase. An acoustic signal will sound to alert the installer in the event of damage.

Schlüter Systems DITRA - HEAT Summary of functions

a) Uncoupling
DITRA-HEAT uncouples the covering from the substrate and neutralise’s stresses between the substrate and the tile or stone covering that result from different deformation processes. The material effectively bridges tension cracks from the substrate and ensures that they are not transferred to the tile covering.

b) Waterproofing
DITRA-HEAT / -HEAT-DUO is a waterproof polyethylene membrane with a relatively high water vapor diffusion seal. When properly installed at the abutting seams as well as at wall transitions and connections to building components, DITRA-HEAT / -HEAT-DUO can form part of an approved bonded waterproofing assembly with the tile covering. DITRA-HEAT / -HEAT-DUO can be used in accordance with the German waterproofing standard DIN 18534. Water exposure classes: W0-I to W3-I*. Furthermore, DITRA-HEAT / -HEAT-DUO features the national technical approval (abP) required in Germany.

Moisture load class according to ZDB: 0 to B0 and A.

Schlüter DITRA-HEAT / -HEAT-DUO features European Technical Approval (ETA) pursuant to ETAG 022 (watertight covering kits) and bears a CE mark. It must be ensured that only system-approved thin-set mortars are used in areas that require CE conformity or compliance with the general certificate of national technical approval. Please contact the address specified in this data sheet for further information on suitable thin-set mortars and the corresponding test certificates.

DITRA-HEAT / -HEAT-DUO therefore protects the substrate from damage that results from permeating moisture and aggressive substances.

* With abP and/or in compliance with ETA according to ETAG 022. Please contact our Application Technology department for further information regarding use and installation.