Sauna construction

pirties statybaBuilding a sauna is a complex job that requires specific knowledge, so we always recommend contacting specialists. If you have decided to build a sauna yourself, we suggest you read some tips.


Construction of a sauna. Where to start?

A sauna is classified as a simple structure if its area is up to 80 sq.m. In practically all cases, permits for the construction of a sauna will not be required. If you are sure that permits are not required for the construction of your sauna, the next step is to choose a location. If you have a plot of land near a river, lake or on your own land, you can dig a pond - that's great. Those who don't have these options can always build a bathtub, install a shower, or even a cold shower bucket.


What size sauna should be built?

The size of the sauna that you promise to build depends on your needs and financial capabilities. If you will use the sauna only for the needs of the family, it can be small. In the case that you often have guests who also like the sauna, you should build a bigger one.

When building a sauna, do not reduce the sauna room itself to a minimum, think about how much space the sauna heater will take, whether at least two people will be able to pass freely, where you will place the bucket, whether the area of ​​the benches will be comfortable for both sitting and relaxing. The optimal size of an electric sauna should be 2 x 2.5 m, the ceiling height is about 2.2 m, the optimal size of a wood-burning sauna is 2.5 x 2.5 m, the ceiling height is about 2.2 m.

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Sauna construction - foundations

If you are not building a sauna in a house, but in a separate building, you will need foundations. What foundations are needed for the construction of a sauna depends greatly on the soil, whether it will be strip or even drilled. In some cases, it is possible to do without foundations if the sauna is built as a temporary structure.


What kind of wood should be used to build a sauna?

If you are building a wooden sauna, you can use practically all kinds of wood for the walls: spruce, aspen, pine, linden, abachi, cedar, black alder. However, it is recommended to cover the inside of the sauna with hardwood paneling, as this wood does not have sapwood. If you really want to finish the sauna with coniferous wood, we suggest using only spruce wood from Finland, which is sapwood-free, or cedar, abachi.


Building a sauna - heating

Many people warm the sauna with cotton wool. The correct method of insulation using cotton wool would be: cotton wool, moisture-resistant plasterboard and a special heat-reflecting aluminum film, the joints of which must be insulated with a special adhesive aluminum tape. It is also possible to use special SPU panels, which save the area of ​​the sauna, because they are only 3 cm thick, the panels are covered with aluminum film, easy to install. You will not need to use cotton wool, plasterboard, fix aluminum foil. You will save not only the area of ​​the sauna, but also a lot of time! Remember to leave a gap between the siding and the insulation material, otherwise the siding will start to mold and rot. Never hammer the paneling down to the bottom, leave a gap of at least 10 cm between the paneling and the tiles, otherwise the paneling will start to rot. Wall paneling should be 1.1 - 1.5 cm thick, ceiling 1.1 - 1.5 cm thick.

If you decide to put a window in the sauna room, we always recommend to put only a wooden window, because the heated plastic begins to release chemical compounds that are dangerous to human health.



When building a sauna, it is necessary to plan in advance where the ventilation will be. You can find information on how to properly install ventilation here.


You can find more advice on sauna installation, sauna construction, sauna heaters, sauna stones in our other articles.

If you have decided to contact specialists regarding the construction of a sauna, we will gladly design and build the sauna of your dreams.

The price of the sauna project is negotiable. If the sauna is installed by our company, the sauna project is free.

We work throughout Lithuania and Europe!


Contact our experts:

Vaidas Baupkus


[email protected]