Schlüter-KERDI-BOARD-N are prefabricated installation components for creating niches and shelves for wall areas of all kinds, made from the multi-functional tile underlayment Schlüter-KERDI-BOARD. They can be covered directly with tiles or with suitable rendered/plaster covering materials.

There are four size options available:

305 x 152 x 89 mm

305 x 305 x 89 mm

305 x 508 x 89 mm

305 x 711 x 89 mm

Schlüter-KERDI-BOARD-N

Installation in Schlüter-KERDI-BOARD:

1. After positioning and precise marking of the outer niche dimensions, cut out the appropriate opening in the wall panelling.
2. Fix the inserted niche in place with wood or installation screws, depending on the substrate material. The maximum spacing of the screws is 250 mm. Use KERDI-BOARD-ZT retaining washers. Screws must be set into the abutting joints.

   For additional fastening, the adhesive Schlüter-KERDI-FIX can be applied on the inside flange of the niche.

3. If the material is installed in a wetroom, the joints around the outer edge must be covered using Schlüter-KERDI-COLL-L and the supplied KERDI waterproofing collar.

Installation in plasterboard or other panelling:

1. After positioning and precise marking of the outer niche dimensions, cut out the appropriate opening in the wall panelling.
2. Fix the inserted niche in place with wood or installation screws, depending on the substrate material. The maximum spacing of screws is 250 mm. Place the screws through the niche flanges (spacing approx. 6 mm from the external edge).

   For additional fastening, KERDI-FIX adhesive can be applied on the inside of the niche flange.

3. Walls in wetroom areas must be waterproofed with Schlüter-KERDI. Affix the KERDI waterproofing collar supplied onto the flanges of the niche with KERDI-COLL-L. A hydraulically setting thin-bed mortar can be used for the remainder of the wall area (see product data sheet 8.1 for installing Schlüter-KERDI). Finally, cut out the KERDI membrane in the area of the niche cavity.

Important:

Observe following installation notes when fitting niches with additional intermediate shelves:

Start by marking the desired position along the lower edge of the intermediate shelf.

Fully embed the tiles in the front and side areas of the niche – from there downwards – in the thin-bed mortar. To install the shelves, apply thin-bed mortar on their sides and rear and fit them into the niche so they are supported by the tiles that were laid beforehand.

Recommendation: In installations in wetrooms, fit the shelf with a slight slope toward the front. As an alternative, you can install the tiles with a gradient leveller in the thin-bed mortar. This ensures that no water can accumulate in the niche during use.

Waterproofing with Schlüter-KERDI-BOARD-N

In compliance with the German waterproofing standard DIN 18534, Schlüter-KERDI-BOARD-N can be used in water exposure classes W0-I to W3-I*. Furthermore, Schlüter-KERDI-BOARD-N features the national technical approval (abP) required in Germany.

Moisture load class as specified by ZDB: 0 to B0, and A and C.

KERDI-BOARD-N features European Technical Approval (ETA) for ETAG 022 (watertight covering kits) and bears a CE mark.

* With abP and/or based on ETA for ETAG 022.

Where work must be CE-compliant or in accordance with the certificate of technical approval (abP), only system-certified thin-bed mortar should be used.

Please contact our Technical Department for further information on use and installation for the designation of system-certified thin-bed mortars or to request the corresponding test certificates and approvals (see also product data sheet 12.1 Schlüter-KERDI-BOARD).

Schlüter-KERDI-BOARD-N is a 12.5-mm thick panel of extruded rigid XPS foam, its two surfaces covered with a special, cement-free stiffening material and a fleece fabric for effective anchoring of thin-bed mortars or rendered covering materials. One surface of the board is printed with 10 x 10 mm gridlines.

Material properties and areas of application

KERDI-BOARD-N is waterproof and resistant to the chemical stresses that typically occur in conjunction with tiled coverings. Where required, certified bonded waterproofing can be created in conjunction with Schlüter-KERDI or KERDI-BOARD.

KERDI-BOARD-N is completely flat and even when exposed to temperature or moisture fluctuations on one side remains free of deformation, age-resistant and highly stable.

KERDI-BOARD-N is suitable for a wide variety of applications.

Substrates should be checked for sufficient stability and other project-related requirements.

Anodised aluminium: Thanks to the anodising, the aluminium features a refined finish that retains an unchanging appearance during normal use.

Aluminium is sensitive to alkaline media.

Cementitious materials, in conjunction with moisture, become alkaline. Depending on the concentration and length of exposure, this may result in corrosion (aluminium hydroxide formation).

For this reason, remove mortar or grouting material immediately from all visible areas and do not cover freshly laid coverings with foil.