Internal Glazing Window
SYSTEM WINDOWS
The glass which is used today is ‘float glass’ which has uniform thickness, better transparency and good optical properties. It can be produced in any length and major suppliers in India include Saint Gobain, Guardian & Asahi. These companies make clear glass in different thickness. Normal float glass, also called annealed glass, is available in glass shops across India.


Two other grades of glass are made by glass manufacturers. Tinted float glass or colored glass is used to reduce the effect of solar radiation, but the light transmission efficiency is also reduced. Coated float glass has a thin surface coating, which reflects radiant heat, but light transmission properties are retained. It is very useful in a hot country like India.
Other grades of glass manufactured in India include a) Patterned of Rolled Glass which is used for decorative purposes b) Wired Glass which is used for fire safety c) Extra Clear Glass which is used in high end applications for clarity & high color-rendering properties.