Without use and care they rotted and were torn down. Another factor in favor of the chimney type stove was the industrialization and urbanization of the country. In the countryside every house had a sauna but in the city people had to use public saunas. Practically all of them were of the new type, and usually an extra room was added to them to be used for living until a bigger summer house was built. In the smoke sauna and the chimney type sauna the heating flames go directly through the stones.
Consequently bathing can start only after the fire has died out.
They are in a metal casing above the fire and there are cast iron elements between the stones to convey the heat to them. The fire is kept burning continuously while the sauna is being used. The intensity of the fire regulates the temperature of the stones and of the whole room. With this kind of stove bathing can often begin in only about 30 minutes. However, the practicality of this kind of stove has made it the most popular wood heated stove in Finland.