How to Stop a Windscreen Chip From Spreading

Practical steps to keep a small chip from turning into a full crack before you can get it repaired.

Repairs3 min readUpdated 6 June 2026

A stone chip might look harmless, but the glass is under constant stress from temperature changes and vibration — and a chip can race into a long crack with little warning. While the only real fix is a professional repair, these steps can buy you time.

Avoid sudden temperature changes

Glass expands and contracts with heat. Blasting cold air-conditioning onto a hot windscreen, or hot demister onto cold glass, creates stress that encourages a chip to spread. In Brisbane's heat, try to cool the cabin gradually and park in shade where you can.

Drive gently and reduce vibration

  • Take it easy over speed bumps, potholes and rough roads
  • Avoid slamming doors, which sends a pressure pulse through the glass
  • Don't overload or flex the body of the vehicle if avoidable

Protect and cover the chip

Keeping dirt and moisture out of the chip helps a later repair bond better. A small piece of clear tape over the chip can keep it clean — but use it sparingly and don't let it obscure your view. Avoid DIY resin kits if you intend to have it professionally repaired, as a poor DIY attempt can make a proper repair harder.

Book a repair quickly

These steps slow things down, but they don't fix the chip. The sooner a technician injects resin into the damage, the more likely it can be repaired rather than replaced. A repair is fast, affordable and keeps your original glass.

Frequently Asked Questions

How fast can a chip turn into a crack?
Sometimes within days — or instantly with a sharp temperature change or bump. That's why it's best to book a repair as soon as you notice a chip.
Should I put tape over my windscreen chip?
A small piece of clear tape can keep dirt and moisture out until your repair, which helps the resin bond. Just make sure it doesn't block your view while driving.

Need a windscreen sorted?

Brisbane Mobile Auto Glass comes to you for windscreen replacement, chip repair and car window glass across Brisbane and South East Queensland. Explore our services:

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