Glass is also available in its basic form as coated glass where the coating is done during the float glass manufacturing process. These coatings are generally known as:
Hard Coating or paralytic coatings which are very durable and ideally suitable for further processing like tempering, heat -strengthening, laminating, insulating etc.
Soft Coating, which is the form of metallic coating done in a vacuum atmosphere.Multiple coatings can be applied for better thermal performance along with the variety of colours. Soft coated glass can not be tempered after coating and needs to be proceed inside a double glazing or laminated environment.
Soft coating, with additional protective coating known as Medium Coating enables glass to be processed further. It has the thermal performance of soft coated glass but can be tempered after coating and can also be single gazed with the coated sides exposed to the interiors only.
Solar Reflective Glass consists of a layer of clear or coloured float glass that has been coated with a thin layer of metal oxide on the one side of the glass. Solar reflective glass has the ability to reflect and absorbed oar of the solar radiation.
Due to the coating of metal oxides on the glass, solar reflective glass is widely applied as an aesthetic product in architecture for its highly reflective surface and its wide palette of colours.
An exceptional property of reflective glass is that the coating of metal oxides on the glass can be achieved without affecting the transparency of glass. This glass can be used in a number of combinations employing other glass technologies to enhance its performance.
Low E Glass is an innovative coated glass that prevents heat from escaping during the winter and reduces the amount of the heat that enters a building in the summer. It is used widely in residential, commercial and industrial applications. Similar to solar reflective glass , low-emissivity glass (commonly known as low-e glass.) relies on special coating to achieve its high performance in principle. Low E -Glass is able to selectively reflect the invisible long-wave infrared or heat while letting the visible light in. The low -e coating allows for exceptionally high visible light transmission up to 70% as compared to 79% in clear glass. The use of low-e glass can substantially reduce the heat gain within a building and hence its energy consumption for air conditioning.