Definition of different types of glass

Single glazing

This glazing consists of a flat glass pane (usually 4 mm thick). The u-value of this pane is extremely poor, so that almost all window films (inside or outside) can be applied to it.
This glazing can also be designed as safety glazing (ESG).

Insulating glazing

This colloquial term describes glazing that is composed of several (usually two, increasingly three due to better thermal insulation) flat glass panes lying parallel to each other. The individual glass elements consist of uncoated clear glass panes.
This glazing can also be designed as sound insulation glazing or safety glazing (VSG).

Thermal insulationglazing

This type of glazing is a glass element consisting of several (usually two, increasingly three due to better thermal insulation) flat glass panes lying parallel to each other. One of the two panes (or both) is provided with a transparent layer towards the space between the panes. This improves the u-value of the insulating glass unit.
This glazing can also be designed as sound insulation glazing or safety glazing (VSG).

Solar controlglazing

The structure of this glazing is largely the same as thermal insulation glazing, except that coloured glass is usually used for solar control. The tinted glass filters the incidence of light and thus prevents glare. This makes for more pleasant light. A solar control glass is a special flat glass that reduces excessive solar radiation into the room and thus excessive heating of the room air. Solar control glass achieves this effect by absorbing or reflecting the sun's rays.
This glazing can additionally be designed as sound insulation glazing or safety glazing (VSG).