wedi board for underfloor heating – waterproof base with integrated grooves
The wedi board for underfloor heating is a pre-grooved building board in which water-based underfloor heating can be installed directly. The grooves are factory-milled for 12 mm or 16 mm underfloor heating pipes, allowing you to create a perfect laying pattern quickly and without any cutting or milling on site. Thanks to the waterproof XPS core, the board immediately forms a safe and stable base in any bathroom or wet room. No screed, no drying time, but a dry and efficient system that is immediately ready for further finishing.
➕ Pre-grooved for 12 mm (100 mm centres) or 16 mm (120 mm centres) pipes
➕ 100% waterproof – ideal for bathrooms and wet rooms
➕ Available in multiple thicknesses (20, 30, 40 and 50 mm)
➕ Perfectly compatible with wedi Fundo shower trays
➕ Lightweight and quick to install
➕ Also available as a complete underfloor heating kit based on m²
Technical specifications
- Brand: wedi
- Product: wedi board for underfloor heating
- Type: Pre-grooved building board
- Application: Water-based underfloor heating in bathrooms and wet rooms
- Pipe diameter: 12 mm or 16 mm
- Centre distance: 100 mm (12 mm) / 120 mm (16 mm)
- Thicknesses: 20, 30, 40 and 50 mm
- Dimensions: 1,200 × 600 mm and 1,300 × 600 mm
- Material: XPS rigid foam with cement-coated surface
- Properties: Lightweight, insulating and directly waterproof
- Installation: Bond with wedi 610 and tile adhesive, finish with reinforcing tape
- Combination: Perfectly compatible with wedi Fundo shower trays
With the wedi board for underfloor heating you can create a fully waterproof bathroom floor including the shower area. Combine the boards with the correct pipes, adhesive, primer, edge strips and manifold, or choose a complete kit where all quantities are calculated based on the required number of square metres. Ask for advice for your specific situation and easily assemble the ideal underfloor heating system.
wedi board for underfloor heating – waterproof dry-build system for bathrooms
The wedi board for underfloor heating is a pre-grooved building board that allows you to install water-based underfloor heating quickly and in a completely waterproof way in bathrooms or other wet rooms. Unlike traditional systems where pipes are milled into a cement screed, this dry-build system eliminates waiting times and drying processes. The grooves are factory-milled and precisely designed for 12 mm or 16 mm underfloor heating pipes.
Thanks to the XPS rigid foam core with a cement-coated surface, the boards are lightweight, insulating and 100% waterproof. This creates a reliable base for tiling while allowing heat to be transferred quickly and efficiently into the room.
Optimal heat distribution and smart construction
The 12 mm version has a centre distance of 100 mm, ensuring even heat distribution in compact floor constructions. The 16 mm version has a centre distance of 120 mm and is suitable for installations where a slightly larger pipe diameter is required. These fixed groove patterns ensure consistent and predictable heat output.
The boards are available in several thicknesses (20, 30, 40 and 50 mm). This allows them to be perfectly matched to the floor build-up height as well as the thickness of a wedi Fundo shower tray. The result is a continuous, fully waterproof bathroom floor including the shower area.
Perfectly compatible with wedi Fundo shower trays
A major advantage of the wedi board for underfloor heating is its seamless integration with wedi Fundo shower trays. Because both systems are part of the same waterproof building system, the floor construction connects perfectly. Height differences are avoided and a uniform substrate is created that is fully prepared for tiling.
The result: a complete bathroom floor that is waterproof, ready for underfloor heating and technically perfectly integrated.
Everything for a complete underfloor heating system
In addition to the pre-grooved boards, all required accessories are directly available. These include underfloor heating pipes, manifolds or RTL valves, wedi 610 adhesive and sealing compound, tile adhesive, primer for wooden subfloors, edge strips and reinforcing tape. This allows you to easily assemble a complete system.
It is also possible to choose a complete package in which all materials and quantities are calculated based on the required number of square metres. This means you receive not only the correct boards, but also the exact amount of pipes, adhesive and accessories. Efficient, clear and without waste.
Applications and installation
The wedi board for underfloor heating is installed on a flat and load-bearing substrate. Installation is clear and efficient:
- Check the substrate for strength and levelness
- For wooden floors: apply primer (e.g. Ardex P4)
- Bond the boards to the substrate using wedi tile adhesive
- Seal and connect boards with wedi 610
- On wooden floors additionally secure with screws and washers
- Press the underfloor heating pipes into the milled grooves
- Fill the grooves with tile adhesive
- Apply reinforcing tape for strong connections
- Fix tiles using suitable tile adhesive
This creates a stable, fully waterproof floor construction without drying time, which heats up quickly and is ready for use immediately.
Why choose a wedi board for underfloor heating?
- Direct waterproof dry-build system
- No drying time as with cement screeds
- Pre-grooved for 12 mm (100 mm centres) and 16 mm (120 mm centres)
- Multiple thicknesses for perfect alignment with wedi Fundo
- Lightweight and easy to install
- Fast heat transfer and efficient heating
- Also available as a complete package based on m²
- Suitable for renovation and new-build projects
Specifications wedi board for underfloor heating
| Brand | wedi |
| Product | wedi board for underfloor heating |
| Type | Pre-grooved building board (dry-build) |
| Application | Water-based underfloor heating in bathrooms and wet rooms |
| Pipe diameter | 12 mm or 16 mm |
| Centre distance | 100 mm (12 mm) / 120 mm (16 mm) |
| Thicknesses | 20, 30, 40 and 50 mm |
| Dimensions | 1,200 × 600 mm and 1,300 × 600 mm |
| Material | XPS rigid foam with cement-coated surface |
| Properties | Waterproof, insulating, lightweight |
| Installation | Bond with wedi 610 or tile adhesive, seal joints with reinforcing tape |
| Combination | Perfectly compatible with wedi Fundo shower trays |
Complete, waterproof and professional
With the wedi board for underfloor heating you choose a technically advanced system where comfort and waterproofing go hand in hand. In combination with wedi Fundo shower trays and the option of complete m² packages, you can create an efficient, durable and future-proof bathroom floor. Request advice for your project or assemble the ideal system directly.
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