The windows known to all of us. The windows are divided into three main categories which are soundproofing, thermal insulation and security. The thickness of the windows used in the constructions starts from 2 mm to 20 mm. The windows with a thickness of 4mm to 6mm are used in frames that are intended mainly for uninhabitable spaces, without heating or cooling. Such places are the warehouses, various workshops, handicrafts or industries, whose ventilation is necessary and the heating / cooling is unprofitable. While windows with a thickness of 8mm and above (which are called triplex) are used in shop windows, as they are more resistant to impact and applied force.

An important criterion for choosing glass is the safety they provide when broken.

It should be noted that in the houses for windows and doors double energy glazing is chosen.