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Vannitoaremont 24 builds saunas and steam rooms in Tallinn and Harju County: steam sauna, traditional sauna with electric heater, apartment sauna and sauna platforms, with waterproofing and ventilation, which can withstand high humidity and temperature. By the end of 2025, 131 saunas had been completed: 74 apartment saunas, 23 steam saunas and 34 private house saunas.
The air in the sauna is exchanged between the intake opening behind the heater and the extract ventilation opening located high on the opposite wall, because this is the only way fresh air reaches the whole room from the heater before escaping.
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Sauna construction in apartment buildings and private houses consists of four jobs at Vannitoaremont 24: steam sauna and apartment sauna construction, electric heater installation and sauna bench construction.
The construction of a sauna differs from a normal sauna in that the entire room, including the ceiling, is covered with waterproofing, since the sauna operates at an air temperature of 45 degrees and full humidity, with condensate accumulating on every surface, not just on the floor.
Vannitoaremont 24 builds a sauna in an apartment where the owner wants a spa feeling without a wood-burning sauna.
The installation of an electric heater requires the replacement of the stones remaining in the heater every 2 years and a safe 50-centimeter gap around the heater to the bench, which must not contain flammable material.
After installation, Vannitoaremont 24 shows the customer how to set up the heater control panel and at the same time explains when to check the stones and when to change them.
The construction of an apartment sauna accommodates a sauna inside a panel building or newly developed apartment, in an auxiliary room next to the bathroom, where there is a water supply and a ventilation channel.
Before placing an order, Vannitoaremont 24 will explain exactly what conditions the apartment's sauna needs, on a separate page.
View prices and timescales: Construction of an apartment sauna
The construction of the sauna bench installs the sitting and lying platforms in two heights, the height of the lower platform is 45 centimetres and the upper one is 90 centimetres from the floor, because hot air accumulates at the top of the sauna and each added height noticeably adds heat.
Vannitoaremont 24 makes the sauna benches from aspen wood, which does not become brittle in hot humidity.
The size of the sauna and the type of sauna count in the sauna price: a steam sauna costs more than a traditional sauna with an electric heater. The surveyor examines the room planned for the sauna and prepares a written quote without charging a fee.
| Service | Price |
|---|---|
| Construction of an apartment sauna | alates 4470 € |
| Steam sauna construction | alates 5200 € |
| Electric heater installation | alates 480 € |
| Construction of the sauna bench | alates 640 € |
What affects the price:
The construction of a normal, 3-square-meter sauna in an apartment takes 4 working days: the first day is the frame and insulation, the second is waterproofing and vapour barrier, the third is the installation of sauna panelling, and the fourth is the installation of the heater and stage.
We leave 50 centimetres of free space between the heater and the bench, 20 centimetres to the unprotected wall and 10 centimetres to the wall with a heat protection tile. There is 110 centimetres between the stones and the ceiling so that the heat does not accumulate near the flammable ceiling material.
In a sauna, the entire room is waterproofed, including the ceiling, as the 45-degree air with full humidity leaves condensation on every surface. In a traditional sauna, where the air is drier and the temperature reaches 90 degrees, a vapour barrier behind the walls and ceiling is sufficient, because the wooden lining breathes and moisture does not accumulate there in the same way.
Within the same working day, we will also respond to the sauna request, and the construction of the framework begins within 15 working days of the agreement. The drying times of Waterproofing apply in the sauna as in the bathroom, before the sauna panelling are installed. 10 saunas were completed in 2023, 11 in 2024 and 12 in 2025.
Owner: Urmas H., terraced house with heat recovery in Peetri. Location: near Peetri's former windmill, Peetri, Rae parish. Job number: 1587.
Site visit and ventilation check. Due to the heat recovery ventilation of the house, our surveyor planned to take the sauna extract ventilation out of the house with a separate pipe, not through the device's heat exchanger, and the quote included a 4-day schedule.
Framework, insulation and waterproofing. On the first day, the walls of the 3-square-meter sauna and the ceiling built to a height of 2.2 metres received a wooden frame and 50-millimeter stone wool. On the second day, the membrane was applied to the floor and the lower 30 centimetres of the walls, a foil vapour barrier with taped grout joints was attached to the insulation, and each wall was photographed separately.
sauna panelling. On the third day, a 15 mm long profile board with a 20 mm air gap was nailed to the rafters, the humidity of which had been reduced to 12 percent in the dryer.
Heater and handover. On the fourth day, the 4.5-kilowatt heater came 50 centimetres from the bench, the heights of the benches are 45 and 90 centimetres, and 110 centimetres remained between the stones and the ceiling.
Repair price: €4,506.80 including VAT: construction of an apartment sauna (a 3-square meter sauna in a terraced house) 1 × €4,470 = €4,470 and Peetri's repair day travel expenses for 4 days × €9.20 = €36.80. The power for the heater came from a line installed by the developer in the shield of the house.
Duration of repair: 4 working days in 2024, of which frame and insulation 1, waterproofing and vapour barrier 1, sauna panelling 1 and heater and benches 1 day.
Finished room: The extraction of the sauna is separate from the heat recovery device, and the 3 square meter sauna was heated to 80 degrees on the fourth business day.
From the site visit to the installation of the heater in three benches.
At the property, we measure the space, check the presence of a ventilation channel and discuss whether you want a steam sauna, a traditional sauna with an electric heater or a smaller solution that fits into the apartment. Together with the quote, you receive a schedule where the frame, insulation, waterproofing, sauna panelling and heater have their own working days.
We will dismantle the old furnishings and materials of the room planned for the sauna, and the construction debris will go away in a construction-waste bag with a forklift truck. We install a vapour barrier between the insulation and behind it, which keeps moisture outside the insulation layer.
The vapour barrier goes on top of the lining board, and in wet room-type rooms, the waterproofing also goes before the lining board. Before the sauna panelling, the membrane is photographed separately at each wall, and the customer receives the photos together with the warranty document. In the same warranty document, there is a 3-year warranty for the waterproofing.
The location of the room, the absence of a chimney in the apartment and the desired humidity level decide which solution is suitable.
A steam bath is suitable for an apartment where there is no chimney connection and where a lower temperature of 45 degrees with high humidity is desired. A traditional sauna with an electric heater reaches 90 degrees with lower humidity and is suitable for those who are used to the steamy feeling of a cottage or country home.
An electric heater suitable for an apartment has a lower power, since the electrical connection of the apartment does not carry a large load like a detached house, and the heater for a 3-square-meter sauna is limited to 4.5 kilowatts.
We choose aspen as the lining board, because it does not become clammy in hot humidity and is easier to touch than softwood. Alder is suitable for a lower, cooler front room, where direct heat does not come from the heater.
There are 50 centimetres between the heater and the bench, 20 centimetres between the heater and the unprotected wall, and 10 centimetres between the wall with the heat protection tile. There are 110 centimetres between the ceiling and the stones.
A steam sauna works with an air temperature of 45 degrees and full humidity, a traditional sauna with an electric heater reaches 90 degrees with much lower humidity. The sauna therefore needs complete waterproofing on the ceiling as well.
Fresh air enters from the opening behind the heater and moves through the room to the extract ventilation opening high up on the opposite wall. This direction ensures that the air reaches the entire room before exiting the heater.
The construction of a normal, 3-square-meter sauna in an apartment takes 4 working days, from the frame and insulation to the installation of the heater and stage. The schedule of the larger sauna of the private house also includes days for the construction of the outer shell.
The construction of an apartment sauna costs from 4,470 euros. The construction of a steam sauna, which requires more thorough waterproofing, costs from 5,200 euros.
Yes, an electric heater does not require a chimney or smoke extract ventilation, only a standard electrical connection and a ventilation duct. Read more about the conditions that an apartment sauna needs on the apartment sauna construction page.
Aspen is suitable for a lining board because it does not become brittle in hot humidity. Alder is suitable for a cooler front room, where there is no direct heat from the heater.
The area of sauna construction extends from Lasnamäe and Mustamäe panel apartments to Kalamaja and Kadriorg wooden houses and to private houses and apartments in Maardu, Viimsi, Saue, Keila and Rae parishes. By the end of 2025, 72 saunas have been built in Tallinn and 59 in Harju County.
Call +372 XXXX XXXX or use the form below to request a sauna site visit. Tell us the room size and whether you want a steam sauna or a traditional sauna with an electric heater. We will check the ventilation duct and give the expected number of working days in our first reply.