This indicator

is very important for parquet, because wood is a natural material, which even after its physical "death" continues to breathe and live. The wood is constantly changing. If the relative humidity in the room above the norm, the parquet dies, absorbing excessive moisture, increase in size, otherwise, on the contrary begin to dry out. As a rule, last a trouble occurs in the beginning of the heating season when, after summer days include Central heating radiators. It is late autumn and winter temperature in the apartments is high enough, which can not be said about the humidity. In these months, most often there is a drying of the parquet.

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