Driving down the highway, you hear that sudden pop—a stray rock has just hit your windshield! You check the glass and see a tiny chip. It doesn’t look bad now, but that small mark has a good chance of becoming much, much bigger.
If you know when a chip is likely to spread, you can quickly fix it with windshield chip repair before it spiders out. Let’s walk through the warning signs to save you the cost of a full windshield.
Why Do Windshield Chips Turn Into Cracks?
Windshields are made of laminated glass, which is designed to be tough, but not invincible. Once the surface layer is breached by a rock or debris, the glass loses some of its strength. If your windshield has enough stress on that weak point from the following, it can grow.
Temperature Changes
Glass expands when it’s hot and contracts when it’s cool. In places like Arizona, where you might have scorching daytime heat followed by cooler nights, your glass has a lot of strain. The expansion and contraction can force a small chip to split open further.
Road Vibrations
Every time you drive, your car vibrates. These constant vibrations travel through the vehicle’s frame and into the windshield. Over time, this movement can agitate the damaged area and encourage more cracks that require windshield chip repair.
Moisture and Debris
A chip exposes the inner layers of your windshield, where rain, car washes, and dirt can seep in. If there’s moisture trapped in the windshield when temperatures drop, the water can freeze and expand, pushing the glass apart.
Pressure
Slamming your car door creates a sudden spike in air pressure inside the cabin. This pressure pushes outward against the glass. If there’s already a weak spot, like a chip, that sudden force can be the tipping point that causes a crack.
Location on the Windshield
Chips near the edge of the windshield are particularly dangerous. This area has more stress and tension than the center of the glass because it’s closer to the metal frame.
Signs a Chip Is Likely to Spread
Not all chips behave the same. Some might stay stable for months, while others seem to grow before your eyes. If you notice any of these warning signs, it means your windshield is living on borrowed time and needs immediate windshield chip repair.
- Large Size: If the chip is larger than a dime or if there is already a crack longer than a dollar bill, it is highly unstable.
- Close to the Edge: Damage located within a few inches of the windshield’s edge is under high stress and prone to rapid spreading.
- Spidering: If you see multiple small fractures radiating out from the impact point, these “legs” are pathways for the crack to grow.
- Hindering Your Line of Sight: Chips in the driver’s direct line of sight are dangerous distractions and often require repair or replacement for safety reasons.
- Deep Pit: If you can feel the damage catching your fingernail when you run it over the surface, the pit is deep enough to cause trouble.
- Sudden Growth: If you notice the chip has changed shape or size after a particularly hot afternoon or a cold morning, it is actively spreading.
What You Should Do When You Notice a Chip
The moment you hear that rock hit your glass, the clock starts ticking. While you can’t always get to a shop instantly, taking a few precautions can keep the damage from getting worse before help arrives.
- Avoid Extreme Temps: Try to park in the shade and avoid blasting the AC directly onto hot glass or the defroster onto cold glass.
- Skip the DIY Kits: Super glue or DIY kits can trap air and debris inside the chip, making a professional repair impossible later.
- Keep It Clean: If possible, cover the chip with a small piece of clear tape (on the outside) to keep dirt and water out until it’s fixed.
- Call a Pro: Schedule a professional inspection as soon as possible to assess if it can be repaired.
How Professional Windshield Chip Repair Stops a Chip From Becoming a Crack
To fix your glass, professional windshield chip repair technicians use specialized tools to create a vacuum over the chip. They suck out all the air and moisture, then inject a high-quality resin that flows into every microscopic crack. Once the resin is in place, it’s cured with UV light until it’s hardened into a permanent bond that prevents the glass from separating further.
What Happens If You Wait Too Long
Procrastination is the enemy of auto glass. If you ignore a chip, it eventually fills with dirt, road grime, and washer fluid. This makes it much harder for the repair resin to bond properly with the glass, and you might end up with a cloudy or weak windshield chip repair. Worse, the chip will inevitably spread. A repairable problem can turn into a full replacement if you wait long enough.
Service Auto Glass: Mobile Service That Comes to You
At Service Auto Glass, we know it’s hard to find time to visit a shop, so we bring the shop to you. Our mobile windshield chip repair technicians can meet you at home or work to perform quick, high-quality repairs.
We treat every repair with the same care as a full replacement to make sure you stay safe on the road. If you have a chip, don’t wait for it to crack. Contact Service Auto Glass today to schedule your mobile repair!