Why Is Water So Dangerous To Building Materials?
Today We’ll Answer This Question
So: – First of all, the water that falls on the surface of a building material is rarely pure. More often, due to interaction with industrial emissions and exhaust gases, it turns into acidic solutions, which, after penetrating the pores of the material, cause its rapid destruction.
– Secondly, even pure water, penetrating into the material, dramatically reduces its insulating properties. As a result, heating costs increase.
– Thirdly, water dissolves the salts that the materials contain, which then form unattractive stains (efflorescence) on the surface of the article.
– Fourthly, a wet surface is a good media for the growth of fungi and mold, which adversely affect the appearance of the constructions and can harm people’s health.
– Finally, a particular danger is the freezing of water that has penetrated into the pores of the material. The ice formed during such freezing has a larger volume than the initial water, therefore, strong mechanical tensions occur in the material. As a result, after several freezing / thawing cycles, the non-hydrophobized material loses its durability and is further destroyed.
That is why it is very important to protect building materials from moisture penetration.