Schlüter®-KERDI-BOARD | Function | Schlüter-Systems
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Schlüter®-KERDI-BOARD

Application and Function

Schlüter®-KERDI-BOARD is a multifunctional tile substrate for wall areas, which can be used for creating bonded waterproofing assemblies with tile coverings. Additionally, the product has many uses as a structural panel.

It consists of an extruded hard foam panel, with a special reinforcement material on both sides and fleece webbing for effective anchoring in the tile adhesive. With the available panel thicknesses of 5, 9, 12.5, 19, 28, 38 and 50 mm, Schlüter®-KERDI-BOARD covers a broad range of areas of use for creating level, waterproof substrates for the installation of ceramic and natural stone tiles.

Schlüter®-KERDI-BOARD is waterproof and can withstand all chemical stresses that typically occur in conjunction with ceramic tile coverings. Where required, an approved bonded waterproofing assembly can be created with Schlüter®-KERDI-BOARD in specific areas.

Schlüter®-KERDI-BOARD is suitable for: creating tile substrates on green masonry, existing substrates of all kinds and stud frames made of wood or metal; creating straight or curved separating walls; concealing wall mounted installations and piping (pipe boxes); creating straight or curved bathtub and shower surrounds; as well as creating work surfaces, vanities, storage shelves or any other bathroom structures. The material is equally suitable for creating level substrates in floor renovation projects e.g. residential bathroom installations designed for foot traffic.

Schlüter®-KERDI-BOARD is simply cut to size with a utility knife. The gridlines printed on the surface are helpful for neat and quick installation.

Schlüter®-KERDI-BOARD can be fully adhered in wall areas or alternatively attached with dabs of adhesive. If necessary, the material may be secured with additional wall anchors. In the case of stud frames made of wood or metal, Schlüter®-KERDI-BOARD is attached with screws from the matching hardware system.

Tiles can be installed directly over Schlüter®-KERDI-BOARD using the thin-bed method, but other suitable trowel applied coverings or plaster layers can be utilised, please contact us for advice.

Schlüter®-KERDI-BOARD-N prefabricated installation elements are available for the creation of niches and storage surfaces in walls with a column structure.

Schlüter®-KERDI-BOARD-E/-U and -V are prefabricated panels for creating, e.g. pipe coverings. They are available as angled, U-shaped and slotted Schlüter®-KERDI-BOARD panels for creating rounded edges.

The Schlüter®-KERDI-BOARD-N / -NLT sets include pre-fabricated installation components made of KERDI-BOARD with Schlüter®-LIPROTEC LED technology for creating illuminated (-NLT) niches and shelves for wall areas; see separate product data sheet 12.2 Schlüter®-KERDI-BOARD-N / -NLT.

Schlüter-KERDI-BOARD-E /-U and -V are pre-fabricated panels, e.g. for concealing pipes and creating features. They are available in angled and U-shaped formats and as KERDI-BOARD panels with reliefcuts to create curve-shaped features. Schlüter-Systems also offers profiles and attachment hardware for wall connections and finishing edges, as well as matching wall anchors and screws.


Schlüter®-KERDI-BOARD

Areas of Application and Installation

Installation: Fully embedded Schlüter®-KERDI-BOARD

  1. The adhesive must bond with the substrate and mechanically set in the anchoring fleece of Schlüter®-KERDI-BOARD. Standard dry set adhesives as defined by EN 12004 are suitable for most substrates; otherwise select another suitable adhesive, carefully checking for any incompatibilities of materials.
  2. The thin-bed adhesive is applied either over the substrate or onto Schlüter®-KERDI-BOARD with a notched trowel. 
  3. The anchoring fleece of the Schlüter®-KERDI-BOARD panels are fully embedded in the adhesive bed. Observe the curing times of all materials.
  4. Tightly abut the individual panels and align them appropriately.
  5. The tiles can be installed immediately after adhering the Schlüter®-KERDI-BOARD panels, using a dry setting adhesive that meets the requirements of the covering. Choose a notched trowel to match the tile format. The curing times of the thin bed adhesive must be observed.


Note: See section “Waterproofing" on the use of Schlüter®-KERDI-BOARD in bonded waterproofing assemblies.


Attachment of Schlüter®-KERDI-BOARD with dabs of adhesive

  1. Place dabs of adhesive on the Schlüter®-KERDI-BOARD panel at intervals of approx. 30 cm and ensure that all board edges are fully supported with adhesive. Depending on the required thickness of the layer, use a suitable bonding adhesive.
  2. Set the panels at the wall, firmly press them in place and align them with the use of a spirit level.
  3. The tiles can be installed immediately after adhering the Schlüter®-KERDI-BOARD panel, using a thin-bed adhesive that meets the requirements of the covering. Choose a notched trowel to match the tile format. The curing times of the thin-bed adhesive must be observed.


Note: If no lasting adhesion can be created between the dabs of adhesive and the substrate, additional mechanical attachment with the corresponding wall anchors or screws is required.

Note: See section “Waterproofing" on the use of Schlüter®-KERDI-BOARD in bonded waterproofing assemblies. 


Use of Schlüter®-KERDI-BOARD on stud frame structures

  1. Schlüter®-KERDI-BOARD can be installed and screw-mounted vertically or horizontally on professionally constructed stud frames. If using the system fixings, the panels may be tightly abutted when fixing the screws. The selected screws should be of sufficient length to reach a depth of at least 20 mm in wooden studs and at least 10 mm in metal studs. The distance between the screws should not exceed 25 cm. Depending on the project requirements, the panel thickness for installation on stud frame structures (centre line 62.5 cm) should be at least 19 mm.
  2. In the case of vertical installation, abut the individual panels over the centre of the studs and insert additional noggins if required to support the board. In the case of horizontal installation, ideally ensure that all board joints are either supported by a stud or nogging. However seal all vertical joints that are not located over a stud with tile adhesive, Schlüter®-KERDI-FIX or the double sided adhesive tape Schlüter®-KERDI-BOARD-ZDK, if suitable for the installation. Such abutting joints should be offset.


Note: See section “Waterproofing" on the use of Schlüter®-KERDI-BOARD in bonded waterproofing assemblies.


Use of Schlüter®-KERDI-BOARD in partition wall systems

  1. Schlüter®-KERDI-BOARD is adhered to the permanent wall with the abutting edge to make sure that the tile covering to be installed on the permanent wall includes the Schlüter®-KERDI-BOARD partition wall. If possible, the partition wall should be stabilised between Schlüter®-KERDI-BOARD panels adhered to the permanent wall. As an alternative, you can also screw-mount a matching angle or U-shaped profile on the permanent wall for the attachment of the partition wall.
  2. Open ended partition walls can be further stabilised with the U-shaped components of the attachment hardware. If you plan to screw fittings to the U-shaped profile, adhere the matching flat plastic profile Schlüter®- KERDI-BOARD-ZFP to the back of the U-shaped profile to improve the fixing of the screws. U-shaped profiles may also be used for connections in the wall and ceiling area.
  3. All vertical and horizontal joints of Schlüter®-KERDI-BOARD panels must be sealed with thin-bed adhesive or Schlüter®-KERDI-FIX, if applicable. In the case of partition walls, a matching angle or U-shaped profile may be included in one or several abutting joints for improved stability.
  4. Depending on the individual construction site requirements, such partition walls are considered lightweight walls without structural analysis. As a rule, use the 50 mm panels for this kind of structure. Panels from a thickness of 19 mm may be used for building shelving. Again, this must be evaluated in accordance with the building specifications.


Note: See section “Waterproofing" on the use of Schlüter®-KERDI-BOARD in bonded waterproofing assemblies.


Panel coverings made of Schlüter®-KERDI-BOARD

  1. The angle and U-shaped components of the Schlüter®-KERDI-BOARD attachment hardware allow for quick and easy panelling of piping and electrical installations.
  2. The components with V-shaped grooves are supplied flat and can easily be cut to the required size. As an alternative, you can also cut a single U-shaped component into two angled elements with shorter legs.
  3. The components are folded for installation, with a prepared adhesive strip holding them together in a V-shaped groove.
  4. Adhere the edges of Schlüter®-KERDI-BOARD U-shaped or angled components to the existing walls, using either thin-bed adhesive or Schlüter®-KERDI-FIX. If required, mount the angle profile Schlüter®-KERDI-BOARD-ZW on the wall area first to attach the panel.


Note: See section “Waterproofing" on the use of Schlüter®-KERDI-BOARD in bonded waterproofing assemblies.


Curved wall areas made of Schlüter®-KERDI-BOARD

  1. The grooved version of the Schlüter®-KERDI-BOARD panel is designed for creating rounded and curved structures.
  2. First, cut the grooved panels to the required size. If a larger expanse of panels is required, several panels can be connected along the edges with double sided adhesive tape.
  3. If the grooved surface points toward the inside, it is recommended to fill the grooves with tile adhesive prior to installation.
  4. Exterior grooves should be filled with thin-bed adhesive prior to or during the tile installation.


Note: See section “Waterproofing" on the use of Schlüter®-KERDI-BOARD in bonded waterproofing assemblies.


Use of Schlüter®-KERDI-BOARD in floor areas

  1. Schlüter®-KERDI-BOARD is equally suitable for creating level substrates in floor renovation projects, for example in bathroom installations. To install Schlüter®-KERDI-BOARD in 5, 9, 12.5 and 19 mm thicknesses the substrate must be level, ready to bear weight and free of all substances that may weaken the bond. Any levelling must be completed prior to installing Schlüter®-KERDI-BOARD.
  2. The adhesive must bond well with the substrate and mechanically set in the anchoring fleece of Schlüter®-KERDI-BOARD. Standard dry set adhesive as defined by EN 12004 is suitable for most substrates. Otherwise, select another suitable adhesive, carefully checking for any incompatibilities of materials.
  3. Apply thin-bed adhesive over the substrate with a notched trowel and fully embed the anchoring fleece of the Schlüter®-KERDI-BOARD panels in the adhesive bed. Tightly abut the individual panels and align them appropriately. Observe the curing times of all materials.
  4. Provided the substrate is sufficiently load-bearing, Schlüter®-KERDI-BOARD panels from a thickness of 28 mm can be installed with spots of thin-bed adhesive or other suitable adhesive, followed by height alignment. To ensure proper weight bearing of the covering, place the dabs of adhesive closely together. Apply thin-bed adhesive to the joints at the edges of the panels and ensure they are supported by dabs of adhesive from below.
  5. Use an edge strip to eliminate the build-up of tensions in Schlüter®-KERDI-BOARD and the tile covering in edge areas.
  6. The tiles (minimum size: 5 x 5 cm) can be installed immediately after fully embedding the Schlüter®-KERDI-BOARD panels, using a dry setting adhesive that meets the requirements of the covering. If using dabs of adhesive, allow them to cure first for full weight bearing of the substrate. Choose a notched trowel to match the tile format. The curing times of the thin-bed adhesive must be observed.
  7. Observe the applicable technical standards for movement joints used in field definition and edge and connection joints.


Note: See section “Waterproofing" on the use of Schlüter®-KERDI-BOARD in bonded waterproofing assemblies.


Waterproofing with Schlüter®-KERDI-BOARD

Schlüter®-KERDI-BOARD can be used in accordance with the German waterproofing standard DIN 18534. Water exposure classes: W0-I to W3-I*. Furthermore, Schlüter®-KERDI-BOARD features the national technical approval (abP) required in Germany. Moisture load class according to ZDB: 0 to B0 and A and C.

Schlüter®-KERDI-BOARD 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 adhesives 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 adhesives and the corresponding test certificates.

* 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.

If constructing designs of load category B, “Containers" (e.g. swimming pools), we recommend the use of our waterproofing membrane Schlüter®-KERDI (see product data sheet 8.1 Schlüter®-KERDI).

For this purpose, the joints and corners of Schlüter®-KERDI-BOARD in the area must be fully covered with the sealing band Schlüter®-ERDI-KEBA (minimum width 12.5 cm), embedding the sealing adhesive Schlüter®-KERDI-COLL-L. The sealing band should have at least 5 cm of overlap.

Schlüter®-KERDI-KEBA band is also suitable for creating functional connections to fixed structural elements such as door openings or windows of metal, wood or plastic. For this purpose, apply Schlüter®-KERDI-FIX on the adhesive area of the fixed structures and Schlüter®-KERDI-COLL-L on the adhesive area of Schlüter®-KERDI-BOARD and cover the entire joint area with sealing band.

The suitability of Schlüter®-KERDI-FIX for the built-in components must be verified in each individual case. The feasibility of the connections must be evaluated on the basis of individual construction requirements. Implement all connections with great care. Separate Schlüter®-KERDI-BOARD above the existing movement joints and structural joints and cover the abutting joints with Schlüter®-KERDI-FLEX. Schlüter®-KERDI-FLEX is also recommended for flexible edges.


Plaster and trowel-applied coatings over Schlüter®-KERDI-BOARD

These materials may adjoin tiled coverings (e.g., tiled skirtings) or be applied to entire walls in other areas. Abutting joints within the area, at the internal and external corners, and at exposed edges must be reinforced and covered with a trowel-applied material. The self-adhesive joint reinforcement tape Schlüter®-KERDI-BOARD-ZSA should be used for this purpose.


Schlüter®-KERDI-BOARD

Material

Schlüter®-KERDI-BOARD is made from an extruded XPS hard foam, with a cement-free reinforcement layer laminated onto both sides, together with an anchoring fleece webbing. The surface of the board has gridlines consisting of 10 x 10 mm squares printed on one side.

Material properties and areas of application

Schlüter®-KERDI-BOARD is waterproof and can withstand all chemical stresses that typically occur in conjunction with tile coverings. Schlüter®-KERDI-BOARD may be used in bonded waterproofing assemblies where required.

Schlüter®-KERDI-BOARD is completely level and remains free of distortions and decay. It will not rot and is highly stable, even with one side exposed to temperature fluctuations and moisture.

Schlüter®-KERDI-BOARD can be used for a multitude of different applications. In special cases, the suitability of the material must be verified based on the anticipated chemical and mechanical stresses. The information provided below is intended as general guidelines.

Substrates on which Schlüter®-KERDI-BOARD is to be installed need to be evaluated for their stability and other project specific requirements. Before directly adhering the panel with tile adhesive, remove all surface components that may weaken the bond. Otherwise, we recommend attaching the panel with additional fixings.

Select a suitable material thickness if using Schlüter®-KERDI-BOARD for the construction of non load bearing/free-standing partition walls, shelving or similar structures and use reinforcement profiles as necessary. The use of Schlüter®-KERDI-BOARD in floor assemblies is restricted to foot traffic areas, e.g. bathrooms, kitchens, etc. Floor coverings may have a certain hollow sound when they are walked upon with hard shoes or tapped with a hard object.

Select the material thickness and installation method depending on the evenness of the substrate. Thin panels of Schlüter®-KERDI-BOARD (5 mm) should be fully embedded in tile adhesive.


Schlüter®-KERDI-BOARD

Maintenance

Schlüter®-KERDI-BOARD should be stored flat or in another suitable manner. In case of outdoor storage, protect the material from direct sunlight or weather influences. If installing bathroom fittings such as vanities, toilets or other heavy objects, the material must be anchored in the weight-bearing substrate. In the case of stud frame substrates or wall mounted installation, the material must be attached to weight-bearing components with abutments in the lower area of the structures, which may need to be reinforced.

Schlüter®-KERDI-BOARD


<a name='board'></a>Schlüter®-KERDI-BOARD

Schlüter®-KERDI-BOARD is a universal substrate for the installation of tiles on walls of any kind and can also be used in bonded waterproofing assemblies. Schlüter®-KERDI-BOARD is suitable as an underlayment for filler or plaster coatings.

<a name='board'></a>Schlüter®-KERDI-BOARD


Schlüter®-KERDI-BOARD


Schlüter®-KERDI-BOARD


Schlüter®-KERDI-BOARD


<a name='v'></a>Schlüter®-KERDI-BOARD-V

Schlüter®-KERDI-BOARD-V is an substrate and construction panel with vertical grooves for creating curved tile installation substrates.

<a name='v'></a>Schlüter®-KERDI-BOARD-V


<a name='e'></a>Schlüter®-KERDI-BOARD-E

Schlüter®-KERDI-BOARD-E is an angled component for creating corner formations and pipe panelling.

<a name='e'></a>Schlüter®-KERDI-BOARD-E


<a name='u'></a>Schlüter®-KERDI-BOARD-U

Schlüter®-KERDI-BOARD-U is a U shaped component for creating pipe panelling.

<a name='u'></a>Schlüter®-KERDI-BOARD-U


Schlüter®-KERDI-BOARD-E/-U


<a name='n'></a>Schlüter®-KERDI-BOARD-N

Schlüter®-KERDI-BOARD-N are prefabricated installation components made of KERDI-BOARD for creating niches and shelves for wall areas of all kinds. Niches can be integrated into the Schlüter®-KERDI waterproofing system as a bonded waterproofing assembly.

<a name='n'></a>Schlüter®-KERDI-BOARD-N


<a name='zw'></a>Schlüter®-KERDI-BOARD-ZW

Schlüter®-KERDI-BOARD-ZW is a 30 x 30 mm stainless steel angle profile with two trapezoid perforated anchoring legs. It is used for connecting and stabilising structures made of Schlüter®-KERDI-BOARD panels. It is either attached with screws or thin-bed adhesive.

<a name='zw'></a>Schlüter®-KERDI-BOARD-ZW


Schlüter®-KERDI-BOARD-ZC

Schlüter®-KERDI-BOARD-ZC is a U shaped profile of brushed stainless steel with trapezoid perforations in one anchoring leg. It is particularly suited for the connection of kitchen work tops, vanities, and similar surfaces.

Schlüter®-KERDI-BOARD-ZC


Schlüter®-KERDI-BOARD-ZC/E


Schlüter®-KERDI-BOARD-Z/V


Schlüter®-KERDI-BOARD-ZI/V


Schlüter®-KERDI-BOARD-ZA

Schlüter®-KERDI-BOARD-ZA is a U shaped profile of brushed stainless steel with trapezoid perforations in both anchoring legs. It is particularly suited for visible edges of partition walls and shelves.

Schlüter®-KERDI-BOARD-ZA


Schlüter®-KERDI-BOARD-ZA/E


Schlüter®-KERDI-BOARD-Z/V


Schlüter®-KERDI-BOARD-ZI/V


Schlüter®-KERDI-BOARD-ZB

Schlüter®-KERDI-BOARD-ZB is a U shaped profile of stainless steel with trapezoid perforations in three anchoring legs. It is used for connecting and stabilising structures made of Schlüter®-KERDI-BOARD panels.

Schlüter®-KERDI-BOARD-ZB


Schlüter®-KERDI-BOARD-ZSD

Schlüter®-KERDI-BOARD-ZSD are galvanised steel or stainless steel anchors for the additional mechanical fastening of Schlüter®- KERDI-BOARD to the substrate.

Schlüter®-KERDI-BOARD-ZSD


Schlüter®-KERDI-BOARD-ZSD


Schlüter®-KERDI-BOARD-ZT

Schlüter®-KERDI-BOARD-ZT are galvanised steel or stainless steel washers for the attachment of Schlüter®-KERDI-BOARD to stud frame structures.

Schlüter®-KERDI-BOARD-ZT


Schlüter®-KERDI-BOARD-ZT


Schlüter®-KERDI-BOARD-ZS

Schlüter®-KERDI-BOARD-ZS are installation screws for the attachment of Schlüter®-KERDI-BOARD to stud frame structures.

Schlüter®-KERDI-BOARD-ZS


Schlüter®-KERDI-BOARD-ZS 55


Schlüter®-KERDI-BOARD-ZS 75


Schlüter®-KERDI-BOARD-ZDK

Schlüter®-KERDI-BOARD-ZDK is a double sided adhesive tape for the attachment of Schlüter®-KERDI-BOARD in joint areas.

Schlüter®-KERDI-BOARD-ZDK


Schlüter®-KERDI-BOARD-ZSA

Schlüter®-KERDI-BOARD ZSA is a self adhesive tape for joint reinforcement where trowelapplied covering materials or plaster is used over Schlüter®-KERDI-BOARD.

Schlüter®-KERDI-BOARD-ZSA


Schlüter®-KERDI-BOARD-ZFP

Schlüter®-KERDI-BOARD-ZFP is a flat plastic profile that is adhered behind the U shaped profile to ensure strong reinforcement for attaching fittings; e.g. door hardware.

Schlüter®-KERDI-BOARD-ZFP


Schlüter®-KERDI-BOARD


Schlüter®-KERDI-BOARD


Technical Data

Technical Data

Notes

Schlüter®-KERDI-BOARD should be stored flat or in another suitable manner. In case of outdoor storage, protect the material from direct sunlight or weather influences. If installing bathroom fittings such as vanities, toilets or other heavy objects, the material must be anchored in the weight-bearing substrate. In the case of stud frame substrates or wall mounted installation, the material must be attached to weight-bearing components with abutments in the lower area of the structures, which may need to be reinforced. 


Schlüter®-KERDI-BOARD

Frequently asked questions

Wall tiling

What do I need to know about preparing the abutting seams of panels for wall tiling?

Show answer

The panels must be completely flush and abutting. If the system is installed in a high-moisture area, the seams must be sealed with Schlüter®-KERDI.

Dry area

Waterproofing in wet areas


Schlüter®-KERDI-BOARD

Videos

Enjoy our videos showing the product itself as well as possible areas of application.


Schlüter®-KERDI-BOARD: Prepare the wooden stud frame structure for tile installation




Schlüter®-KERDI-BOARD: Tub surrounds




Schlüter®-KERDI-BOARD: Kitchen countertop with tiles




Schlüter®-KERDI-BOARD: Prepare the metal stud frame structure for tile installation




Schlüter®-KERDI-BOARD: Installation of partition walls




Schlüter®-KERDI-BOARD: levelling panel with existing tiles




Schlüter®-KERDI-BOARD: Levelling panel with spots of mortar over existing tiles




Schlüter®-KERDI-BOARD: Vanities and shelving




Schlüter®-KERDI-BOARD: Applications in bathrooms




Contact Schlüter-Systems Ltd

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

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Further information

on our products and specifications can be found here:

Legend "Products"

We use the following symbols and abbreviations to illustrate our price charts.

image image

= new products

= radius perforation available   

 

Dimensions:
H = height
L = length
B = width


Packaging:
PL = euro pallet 
KV = case packaging 
BV = bundle (there is a 10 item bundle packaging for all the profile types)
P = box packaging 
R = roll
St. = unit