Glass is extensively used in building construction such as in doors and windows for architectural features and interior decorations. It is used as a physical barrier between exterior and interior without obstructing visibility. Foamed or cellular glass is used for vapor proof insulation and span form glass fibers are used as acoustic and thermal insulation. This article gives you valuable info on specification of glass, thickness of glass according to sizes, types of glasses according to quality and visibility
Glass should be free from specks, bubbles, distortions and flaws of every kind and be properly cut to fit rebates so that there is a uniform space of 1.6 mm around glass panes between the edge of glass and rebates.