An absolute must, not just in family homes – effective sound insulation. Schlüter-DITRA-SOUND earns full points for this function. The product also stands out for its low assembly height and load transfer to the substrate. Another advantage: the heavy duty PE mat is easy to cut precisely to size with a utility knife. Simply install the mat over thin-bed adhesive and cover the abutting joints with the self-adhesive joint covering tape Schlüter-DITRA-SOUND-KB. The tiles can then conveniently be installed right away. DITRA-S355LV is available in bundles, without packaging, for large scale projects.
Schlüter-DITRA-SOUND is a bonded sound insulation assembly for tile coverings comprising a heavy duty polyethylene mat with an anchoring fleece laminated on both sides. The system was tested by an independent testing institute according to DIN EN ISO 140-8.
An impact sound improvement value (ΔLW) of 13 dB was measured in fully installed Schlüter-DITRA-SOUND assemblies.
The actual improvement offered by the respective assembly depends on the local conditions (structural design) and can deviate from this value. The measured test values therefore may not apply equally to every building situation.
The substrate must be level and load-bearing. Schlüter-DITRA-SOUND is installed in cementitious tile adhesive that is suitable for the substrate, using a notched trowel (recommended size: 3 x 3 mm or 4 x 4 mm). The anchoring fleece on the underside (imprinted side) of Schlüter-DITRA-SOUND is fully embedded and the fabric bonds with the adhesive. The adhesive curing time must be observed.
The tile covering is installed directly over Schlüter-DITRA-SOUND in accordance with the applicable regulations, using the thin-bed method. The thin-bed tile adhesive bonds with the fleece layer on the top side of the mat. This creates a fully bonded system.
The transmission of noise to adjacent rooms or lower floor levels, caused e.g. by walking or falling objects, is called impact sound. This causes vibrations in the floor/ceiling structure, which are then passed on as airborne sound.
The human ear perceives a 10 dB impact sound reduction as a 50% reduction of airborne sound.
In addition, the impact sound of e.g. hard shoes, echoes back into the room. This leads to unpleasant reverberations in light structures with hard surfaces, the so-called drum effect. The solid mass of the heavy duty mat prevents this effect.
In addition, the heavy duty mat material absorbs structural noises, e.g. those caused by footsteps, and helps reduce the drum effect.
The low assembly height of approx. 3.5 mm and the excellent sound insulation values of Schlüter-DITRA-SOUND make it an ideal choice for renovation and refurbishment projects in buildings as well as new construction projects.
Cracks that are only expected to widen slightly without height displacement may be covered with Schlüter-DITRA-SOUND to prevent cracks in the substrate from continuing into the tile covering. If necessary, add an insert to prevent vertical height displacement.
Schlüter-DITRA-SOUND is a compression-resistant heavy duty mat that makes tile coverings installed on Schlüter-DITRA-SOUND especially durable. The tiles for the corresponding application area must be sufficiently thick and have adequate compressive stability to withstand high traffic loads (max. 5 kN/m², e.g. in commercial areas).
Carefully ensure that tiles in high-stress areas are solidly embedded in the tile adhesive.
The impact of hard objects must be avoided on ceramic coverings.
Tile dimensions should be at least 5 x 5 cm with a thickness of at least 5.5 mm.
Always check the substrates on which Schlüter-DITRA-SOUND is to be installed to make sure they are level, load-bearing, clean and compatible with the materials to be used. Remove all surface components that may weaken the bond. Any levelling, height adjustment or slope compensation must be carried out before installing Schlüter-DITRA-SOUND.
Concrete undergoes long-term structural deformation due to shrinkage. With the use of Schlüter-DITRA-SOUND, tiles may be installed after three months.
With the use of Schlüter-DITRA-SOUND, tiles may be installed over cement screeds after 28 days. There is no need to measure the residual moisture.
According to the applicable rules, calcium sulfate (anhydrite) screeds may not have a residual moisture level of more than 0.5 CM % at the time of tile installation. In contrast, tiles may be installed as soon as the residual moisture level drops below 1 CM % with Schlüter-DITRA-SOUND. Because calcium sulfate screeds are susceptible to moisture, screeds must be protected against humidity, e.g. moisture seepage on the underside.
Schlüter-DITRA-SOUND can also be used on heated screeds. In this case, the applicable regulations for conventional heated screeds in conjunction with tile coverings must be observed.
These materials undergo significant deformation based on the influence of moisture (or fluctuations in humidity). It is therefore recommended to use plywood materials with special water-repellent treatment to protect against moisture. The panels must be thick enough to be sufficiently stable in conjunction with a suitable support structure. The panels must be sufficiently secured with screws. All joints should either be tongue and groove connections or covered with adhesive. Perimeter movement joints of about 10 mm have to be maintained at the transition to upright building structures. Schlüter-DITRA-SOUND neutralises any minor tensions that may occur within the substrate.
In principle, ceramic coverings can be directly installed on sufficiently weight bearing, screw-fastened hardwood floors with tongue and groove connections in conjunction with Schlüter-DITRA-SOUND. The wooden substrate should have balanced moisture levels before Schlüter-DITRA-SOUND can be installed. It has proven beneficial to install an additional layer of plywood. Uneven floor surfaces should be levelled with suitable measures beforehand.
All surfaces must be load bearing and pre-treated or suitable for bonding with an appropriate adhesive, in which the Schlüter-DITRA-SOUND anchoring fleece can be embedded. The compatibility of the adhesive with the substrate and with Schlüter-DITRA-SOUND must be verified in advance.
Schlüter-DITRA-SOUND also enables sound insulation assemblies in staircases. It can be used on the various substrate types described above.
Schlüter-DITRA-SOUND is a compression-resistant heavy duty mat with a thickness of approx. 3.5 mm. A fleece fabric is laminated on both sides. Polyethylene is not UV-stable in the long term; the product should not be stored in places with prolonged exposure to direct sunlight.
Schlüter-DITRA-SOUND is non-rotting, stretchable and crack-bridging. In addition, it is largely resistant to the effects of aqueous solutions, salts, acids and alkalis, many organic solvents, alcohols and oils.
Product resistance to special local conditions must be verified separately based on the anticipated concentration, temperature and length of exposure. The product has a relatively high water vapour diffusion seal. The material is non-toxic and physiologically harmless.
Schlüter-DITRA-SOUND can be used in a wide variety of application areas.
Product suitability must be verified in applications exposed to chemical or mechanical stresses.
The cementitious tile adhesive and the covering material installed in conjunction with Schlüter-DITRA-SOUND must be suitable for the respective application area and meet the corresponding requirements.
The use of quick-curing cementitious tile adhesives may be an advantage for certain projects.
It is recommended to protect the centre areas, e.g. those used for material transport, by setting out running boards or other protective coverings over areas where Schlüter-DITRA-SOUND is installed.
Separate Schlüter-DITRA-SOUND over existing movement joints.
Continue the movement joints in the tile covering as specified by the applicable standards. Otherwise, divide large coverings installed over Schlüter-DITRA-SOUND into sections, using movement joints according to the applicable regulations. We recommend using the profiles of the Schlüter-DILEX family. Arrange profiles such as Schlüter-DILEX-BT or Schlüter-DILEX-KSBT over existing expansion joints depending on the anticipated structural movements.
It is important to prevent stress build-up at the edges of the covering, for instance at upright structural components or at floor-wall transitions. Perimeter movement joints and connection joints must be constructed according to the applicable technical regulations and have sufficient dimensions to prevent stress build-up. Install Schlüter-DITRA-SOUND-RSK 630 as an edging strip in these areas. We recommend the various profile types of the Schlüter-DILEX family for perimeter or connection joints at transitions from floor tiles to wall or skirting tiles.
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