Sauna construction

The construction of a sauna is a complex work 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.


Sauna construction. Where to start?


The sauna is classified in the category of simple buildings if its area is up to 80 sq.m. In practically all cases, permits for the construction of the sauna will not be required. If you are sure that you do not need permits to build your sauna, the next step is to choose a location. If you have a plot near the river, lake or land you own, you can dig a pond - great. Those who do not have these options can always build a hot tub, install a shower or even a cold water hot tub.


What size sauna should be built?

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

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


Sauna construction - foundations

If you build a sauna not in a house, but in a separate building, you will need a foundation. What foundation is needed to build a sauna depends very much on the ground, whether it will be strip or even bored. In some cases, it is possible to do without a foundation if the sauna is built as a temporary structure.


What kind of wood to use for the construction of the sauna?

If you build a wooden sauna, you can use practically all types 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 siding, as this wood does not speak. If you really want a coniferous wood trim in the sauna, we recommend using only northern spruce wood from Finland, which is pronounced or cedar, abachi.


Sauna construction - insulation.

Many people insulate the sauna with cotton wool. The correct method of insulation using wool would be: cotton wool, moisture-resistant gypsum board and a special heat-reflecting aluminum foil, the joints of which must be insulated with a special adhesive aluminum tape. It is also possible to use special SPU panels, which save sauna area, as they are only 3 cm thick, the panels are covered with aluminum foil, easy to install. You will not need to use cotton wool, drywall, to attach aluminum foil. You will save not only sauna area, 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 chalk the siding to the bottom, leave a gap of at least 10 cm between the siding and the tiles, otherwise the siding will start to rot. Wall cladding 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 heating plastic begins to emit 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 out how to install ventilation correctly here.


You will find more tips on sauna installation, sauna construction, sauna stoves, sauna stones in our other articles.

If you have decided to turn to specialists for the construction of a sauna, we will be happy to 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 all over Lithuania and Europe!

Contact our experts:
Vaidas Baupkus