Float glass is a compartment glass. The name is derived from the special manufacturing process, the float glass process. In the float process, liquid glass is fed into a container made of liquid tin and then cooled down in an annealing furnace without any stress. Float glass usually does not form bubbles or streaks and is between 2 and 24 mm thick.
Window panes, car panes and mirrors are made of float glass. Float glass is the most commonly used construction glass and is the basis for laminated glass such as toughened safety glass (ESG) as well as insulating glass or soundproof glass.