Laminated glass is the process of bonding two or more pieces of glass together with a specialised adhesive, using specific timed heat settings and air pressure.
It is a type of safety glass that holds together when shattered. In the event of breaking, the glass is held in place by an interlayer between its two or more layers of glass.
The interlayer keeps the layers of glass bonded even when broken, and its high strength prevents the glass from breaking up into large sharp pieces.
This produces a characteristic "spider web" cracking pattern when the impact is not enough to completely pierce the glass.
The laminated glass is normally used when there is a possibility of human impact or where the glass could fall if shattered. Skylight glazing typically uses laminated glass. Where safety is a major issue, toughened/tempered glass can be used to a range of thickness.
The interlayer also gives the glass a much higher sound insulation rating, due to the damping effect, and also blocks out 99% of incoming UV light.
A variation of insertions can be placed between the glass panels to create a sensational piece of artwork. For example, sheer fabrics or a printed image, depending on whether the final outcome is to be opaque or transparent.