What is a Laminated Windscreen?
The standard safety glass used on almost every modern front windscreen.
Simplified animation — not to scale.
In plain English
Most front windscreens are laminated safety glass — two layers of glass bonded together with a thin plastic interlayer (PVB). The interlayer holds the glass together if it cracks, which is why a stone chip usually stays localised rather than the whole screen shattering.
"Think of it like a glass sandwich with a sticky filling — even if the bread cracks, the filling holds it all together so it does not fall apart."
How it works
If the outer layer is damaged, only a small area is affected because the inner layer and interlayer hold everything in place. A qualified technician can often inject resin into a small chip to stop it spreading. Larger cracks usually need a full replacement.
Signs of trouble
- ⚠Stone chip with a small star pattern
- ⚠Crack slowly spreading across the glass
- ⚠Whistling or wind noise around the edge
- ⚠Water leaks after heavy rain
£300–£600
Always get a written quote. Prices vary by car, region, and parts brand.