Front brick is painted or off.

According to the method of molding — on the brick of plastic molding (occurs more often) and brick of semi -dry pressing (found less often).

In the field of use — private (used for enclosing, supporting structures or instructions, etc. p.), front (designed for cladding), special (made for special needs — can be refractory, etc. n). Front brick is painted or off. The average strength of high-quality red brick is M100-M200, density up to 2000 kgm3

C) frost resistance from 15 cycles.