From poor -quality firing

From poor -quality firing, the tile accumulates moisture, it is worse opposed to frost, and microcracks have been destroying it since. Such shortcomings pushing buyers to buy metal analogues, although they do not have all the advantages of ceramic tiles. For many years at home with roofs from tiles, they are reliably serving people. After all, the roof is of great importance during operation of the house. The term for using the construction directly depends on the state of the roof.