Auto & Transport
Windshield cracked by a stone: what to do?
A stone hit can turn into a dangerous crack fast. Learn how to stay safe, assess the damage, and get it fixed properly.
Written by Basma IDBRAHIM · Reviewed by Mark Robinson · Updated October 31, 2026 · Reviewed October 29, 2026 · 3 min read
Immediate actions
- 1 Slow down and pull over safely if visibility is affected.
- 2 Assess the damage: note size, location, and type of crack.
- 3 Avoid sudden temperature changes and rough roads.
- 4 Arrange a professional repair or replacement promptly.
- 5 Do not ignore cracks in the driver's line of sight.
What not to do / warning
A cracked windshield can shatter or impair your vision. If the damage blocks your view, pull over safely and call for professional help.
A stone kicked up by another vehicle can crack or chip your windshield in an instant. While it may seem like a minor issue, windshield damage can compromise safety and worsen quickly. Here is what to do.
What is happening
Your windshield is part of your vehicle's structural integrity and protects you in a crash. A chip or crack weakens the glass and can spread, especially with temperature changes or bumps. Even a small chip in the driver's line of sight can impair vision.
What to do first
- Stay calm and maintain control. If the impact startles you, grip the wheel firmly and avoid sudden braking or swerving.
- Pull over safely if needed. If the crack obstructs your view or you feel unsafe, turn on your hazard lights and pull off the road to a safe spot.
- Inspect the damage. Note the size (e.g., smaller than a coin or larger), location (driver's side, passenger side, edges), and type (chip, star, crack). Take a photo for your records.
- Avoid making it worse. Do not slam doors, use high-pressure car washes, or expose the glass to rapid temperature changes.
- Cover small chips temporarily. If you have a windshield repair kit, follow instructions carefully. Otherwise, use clear tape to keep dirt out until you can get professional help.
What NOT to do
- Do not ignore a crack in your line of sight or one that is spreading.
- Do not use superglue or household adhesives; they can damage the glass and make repair impossible.
- Do not run the air conditioning or heater at extreme settings directly on the glass.
- Do not drive on rough roads or at high speeds if the crack is large.
When to seek professional help
Contact a professional auto glass technician if:
- The chip or crack is larger than a coin (about 1 inch or 2.5 cm).
- The damage is in the driver's primary viewing area.
- The crack is on the edge of the windshield (more likely to spread).
- You see a crack that is growing or has multiple branches.
- There is any sign of leakage or wind noise.
Many insurance policies cover windshield repair with little or no deductible; check your policy. In some regions, repairs may be covered under comprehensive coverage.
What to monitor
After a repair, watch for new cracks or chips. Avoid sudden temperature changes and rough roads for a few days. If you notice any spreading, return to the technician.
How to prevent it
- Keep a safe following distance from trucks and vehicles with loose cargo.
- Avoid driving close behind construction vehicles.
- Repair small chips promptly before they spread.
In summary: stay safe, assess the damage, avoid DIY fixes, and get professional help early. Quick action can save you from a bigger repair bill and keep you safe on the road.