Facts about sauna rocks

Although there are many different types of saunas available on the market, rock saunas are the most popular. As the name suggests, this sauna type uses rocks to produce heat and humidity. The rocks are heated by the sauna stove or heather; in order to produce steam, the bather has to throw water on the rocks periodically.

Most of Finnish saunas include sauna rocks, but every bather knows that these rocks need to be replaced from time to time. Even high quality rocks will break at one point because of the heat and humidity inside the sauna. When this happens, the rock will not produce as much steam as it used to and at the same time, the heat produced will not be enough to make you sweat.

If you want to achieve a rock for your sauna it is highly important to choose a good one. Avoid buying rocks that can explode when exposed to the temperatures and humidity inside the sauna. Also, you should know that rocks with sulphur minerals are not very practical because they usually erode very quickly. But the most dangerous are the rocks that contain asbestos minerals because they can cause cancer.

In order to test the quality of your rock, place it inside the sauna for a few hours and then throw some cold water on it. Hit it with a hammer and see if there are any cracks. If this happens, throw it away.

The best rock for a sauna is peridolite, which can be found in the earth’s upper mantle. Igneous rocks that have a dark color are also very popular because they contain magnesium and iron, thus providing a high heat capacity.

Take care to read very carefully the instructions that came with your sauna kit before replacing the rock because it may not fit and you will lose the heather’s warranty. You should also find out what is the proper weight of rocks to use with the heater. Usually, the rocks have to cover the electric sauna heater’s heating items or should be placed above the rim of the stove (for a wood burning stove). Do not arrange the stones too close one from each other otherwise the air will not circulate properly.

To find out more about this subject ask the help of a professional or search for information online. This way you will be able to choose the perfect rocks for your sauna.

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