How to prevent a stone chip from spreading into a crack.

A small impact can remain stable for a period or spread unexpectedly after vibration, road movement and sudden temperature changes. Send a photo early so replacement can be quoted before the crack runs across the screen.

Keep the damaged area clean and dry

Dirt and moisture can enter the break. Avoid touching the impact point and do not apply household adhesives or improvised fillers. If necessary, place a small piece of clear tape over the dry outer surface until it can be assessed.

Avoid sudden temperature changes

Do not direct very hot air onto cold glass or pour hot water over the windscreen. Rapid expansion and contraction can place additional stress around the damaged area.

Drive carefully

Potholes, rough roads, slamming doors and strong body flex can contribute to spreading. Reduce unnecessary vibration and arrange assessment rather than waiting for the crack to grow.

Park in the shade where practical

Extreme heat can increase glass stress. Covered or shaded parking can help while you wait for professional guidance.

The practical conclusion

This is not a home repair. Keep the area stable and send a photo before a small chip becomes a long crack across the screen.

For the full picture, read when a windscreen needs replacing and whether you should keep driving with a crack.