Wedi waterproof building board

Wedi waterproof building board – professional substrate for wet rooms

This category includes Wedi waterproof building boards and original accessories: boards in different thicknesses, large-format panels, special elements for underfloor heating, as well as Wedi 610 adhesive sealant and fixing hardware. Together they form a complete system for fast and reliable preparation of substrates for tiling or plastering in bathrooms, walk-in showers, SPA areas and other wet rooms.

A Wedi board is made from extruded polystyrene foam (XPS) with a cement-polymer coating and glass-fibre mesh on both sides. Unlike standard gypsum plasterboard, the material does not absorb water, does not swell or deform and keeps its dimensions even under permanent moisture and temperature changes. This makes Wedi a safe, long-lasting waterproof substrate for ceramic tiles, mosaic and decorative plasters.

What you will find in the Wedi category at SityPro

• Standard Wedi boards in various thicknesses (approx. 6–50 mm, formats around 600×1250/2500 mm) – for straightening walls, building partitions and boxing in installation frames and technical shafts.
• Large-format Wedi boards (XL) – ideal for bigger surfaces, they reduce the number of joints and speed up installation.
• Special panels (for example for underfloor heating and technical solutions) – for heating systems, niches and more complex shapes.
• Wedi 610 adhesive sealant – for bonding boards, sealing joints and creating a continuous waterproof envelope.
• Original fixings and accessories – washers, plugs and mounting elements that ensure correct and durable fixing to the substrate.

With these products you can assemble a complete Wedi system according to the manufacturer’s recommendations – from substrate preparation to a structure ready for tiling.

Main applications of Wedi boards

• bathrooms and showers in apartments and private houses;
• showers and changing rooms in gyms, SPA centres and hotels;
• kitchen splashbacks and other locally wet areas;
• cladding of walls and ceilings in saunas (in combination with correct insulation);
• technical shafts, service niches and WC installation frames;
• substrates for underfloor heating, podiums and architecturally complex elements where low weight and moisture resistance are important.

Using the Wedi system helps to reduce the amount of “wet trades” on site: in many cases no additional full-surface liquid waterproofing is needed and the preparation of the substrate for tiling or plastering becomes much simpler. This lowers the risk of mistakes and saves installation time.

Advantages of the Wedi system

• Fully waterproof XPS core – the board does not absorb water and does not break down over time.
• Factory-reinforced surface – excellent adhesion for tile adhesives and plasters without extra layers.
• Low weight and easy handling – boards are easy to cut with a knife or saw and convenient to move and install, even on upper floors.
• Thermal and acoustic insulation – the XPS core improves energy efficiency and acoustic comfort.
• System approach – original adhesives and fixings allow you to work strictly according to the Wedi installation guidelines and achieve predictable, long-term performance.

Delivery of Wedi boards to Finland

Wedi boards are shipped as pallet freight and delivered on working days via our logistics partner Ferroline OÜ. We take care of proper packing and loading so that the boards arrive on site in good condition.

• Helsinki: pallet delivery from approx. 65 €.
• Espoo, Vantaa: pallet delivery typically from 65–85 €, depending on the exact address and total volume.
• Kotka: pallet delivery from approx. 100 €.

Indicative transit time is usually 2–3 working days, depending on the region and the carrier’s schedule. For larger projects or combined deliveries (Wedi boards plus other construction materials) we recommend sending us your project details – we will help optimise the pallet configuration and transport costs for your address in Finland.