Real experts know, what influence renders a choice of stones on quality
of steam and service life heater. The basic requirements to stones
used in a sauna, a bath:
Small rate of expansion, that would not cause cracking in the heat and popple of water.
Green mineral that does not contain harmful impurities.
The ability to withstand significant temperature load.
Have a large thermal conductivity.
Before laying stones in the heater to wash clean water, without any tools.
To reduce the likelihood of cracking stones, it is recommended
podkidyvat stones at the hot water in small portions. All
podkidyvaemaya stones at the water should evaporate. If water starts to
spill through the heater on the floor, the rocks are not hot.
But even a good and solid rocks lose its ability to retain heat, when
to use them continuously for long periods. At least once a year must
pass the stones, while smaller fragments delete and add new, larger
stones.
You can use the saunas and bathhouses inexpensive
stone gabbro-diabase - art.079, a lot of stones in a box - 20 kg. The
larger stones are usually placed on top, small place in the space
between the heating elements heater.