Sauna interior finishing

Three rooms, three jobs

• Steam room: lining of walls and ceiling, benches and the place for the stove. The materials and the stove are chosen according to the type and size of the sauna; in your request, write what you have already chosen.
• Washroom: waterproofing, tiles, installing a floor drain and the slope towards it.
• Rest room: walls, ceiling, floor covering, door.

A sauna can be a room in the house, in the basement or a separate building. If it is a separate building, first find out whether documents are needed to build it; this page is about interior finishing.

Washroom waterproofing and tiles

Ceresit CL 51 is intended for waterproofing walls and floors before tiling in wet rooms, including showers and on heated floors. The manufacturer recommends at least two coats so that the dry layer is 0.5 mm; waterproofing tape is worked into the joints between walls and floor, and collars around pipes and drains.

For tiles, the manufacturer of Ceresit CM 17 adhesive requires the adhesive to cover at least 65% of the underside of the tile, and joints in corners, at the floor and at sanitaryware are filled with silicone, not grout. For Ceresit CE 40 grout, water load may be given after 24 hours, and it reaches full strength after 5 days. For surfaces that are permanently under water, two-component waterproofing is used.

Electrics in a sauna

Connecting an electric stove, light fittings and sockets is electrical wiring work. The installation is carried out under the supervision of a certified construction specialist, and when it is reconstructed, residual current protection is needed. Installing a wood-burning stove and flue is a different job with its own requirements.

The order of work

1. Dimensions and plan Room dimensions, the position of water and sewer, the type of stove (from the description in the request).
2. Services Water, sewer, the position of the drain, electrical routes.
3. Washroom Floor slope, waterproofing, tiling, installing the drain.
4. Steam room Lining, benches, the place for the stove.
5. Rest room Finishing of walls, ceiling and floor.

How long the work takes depends on the scope and on the drying time of the materials.

What to write in your request

• the address and whether the sauna is in the house or a separate building;
• the dimensions of each room in m²;
• the type of stove: electric or wood-burning;
• whether there is a water supply and sewer;
• a description and layout of the rooms;
• whether you will choose the materials yourself.

Sauna finishing price

There is no single price for sauna finishing: it is set by the room dimensions, the materials, the type of stove and whether a water supply and sewer have to be installed. For the washroom and the rest room, the published prices can be used:

• Tiling: from €24/m².
• Waterproofing in the bathroom: from €6/m².
• Floor drain installation: from €100 per drain.
• Painting walls or ceilings: from €4/m².
• Vinyl flooring installation: from €10/m².

Prices are for labour. Materials are calculated separately in the estimate. Example for a washroom: tiling 18 m² × €24 = from €432, waterproofing 5 m² × €6 = from €30 and floor drain installation from €100, total from €562 (only these three jobs). We agree the price and the list of work before the job starts.

What sauna finishing includes