This is hard coated float glass.
Sputtering on the surface of glass from metal oxides improves its energy-saving properties and reduces the emissivity. During production, hot float glass is pyrolyzed with a thin metal oxide film.
As a result of the interaction of glass atoms and metal oxide, a resistant coating is formed that protects against mechanical damage. To enhance the heat-shielding characteristics, K-glass is additionally tempered and laminated.
The use of K-glass contributes to the fact that the heat returns back into the room and does not go anywhere. This significantly reduces energy costs and saves the budget.
It has similar characteristics to K-glass, but has higher performance.
The float glass is coated with two layers of low-emissivity metal oxide sputtering.
This process takes place with the installation of magnetron sputtering in vacuum equipment. The metallized film is "magnetized" to the glass layer. This method of spraying is called "soft" or DoubleLow-E.
Since the coating of i-glass is "soft", its abrasion resistance is low compared to float glass and K-glass.
I-glass needs very careful transportation.
This is a body-tinted glass with the addition of metal oxides. Depending on the color and thickness of such glass, its solar factor varies from 40% to 80%.
When solar radiation is absorbed, such glasses give off heat to the outside, some of it penetrates into the room.
This is an undesirable effect when the room needs to be cooled. In this, absorbing glasses are inferior in characteristics to reflective ones.
Absorbent glasses are produced in different colors: bronze, grey, green, blue and dark blue.