That Chip Isn't Going Away — Here's What to Do
A rock hits your windshield and leaves a small chip. It's tempting to ignore it, but small chips grow into long cracks — especially when temperatures change or you hit a pothole. The question is: do you fix it yourself or call a pro?
Can a Windshield Chip Be Repaired at All?
Not every chip is repairable. Here's a quick guide:
| Damage Type | Repairable? | Notes |
|---|---|---|
| Bullseye chip (under 1") | ✅ Usually yes | Best candidates for repair |
| Star break (under 3") | ✅ Often yes | Depends on location |
| Edge crack | ❌ Usually no | Weakens structural integrity |
| In driver's line of sight | ⚠️ Maybe | Even repaired, may distort view |
| Crack over 3 inches | ❌ Replace needed | Resin won't hold |
| Chip with dirt/moisture | ⚠️ Harder | Must be cleaned first |
DIY Windshield Chip Repair Kits
You've seen them at AutoZone, O'Reilly, or on Amazon — kits like Rain-X or Permatex that claim to fix chips yourself for $10–$20.
How They Work
DIY kits inject a clear UV-curing resin into the chip using a small syringe. You cure it in sunlight and scrape off the excess. The theory is sound — it's basically the same process professionals use — but execution is everything.
DIY Pros
- Cheap ($10–$20)
- Available same-day at any auto parts store
- Good for small, simple bullseye chips on older vehicles
DIY Cons
- Air bubbles — the most common DIY failure. Bubbles in the resin leave the repair visible and weaker.
- Wrong resin viscosity — professional technicians match resin to the type and depth of chip. DIY kits are one-size-fits-all.
- No vacuum injection — pros use vacuum tools to pull air out and force resin in. DIY kits rely on manual pressure.
- Voids insurance claims — if you attempt a DIY repair first, many insurers won't cover professional repair or replacement.
- Permanent damage risk — a bad DIY repair can make the chip unrepairable professionally, forcing full replacement.
Professional Windshield Chip Repair
A professional repair by Auto Renu costs $125 out of pocket — but is often completely free through your insurance. California law doesn't require zero-deductible glass claims, but most major carriers (State Farm, Geico, AAA, Allstate, Farmers) waive the deductible for chip repairs.
What Professionals Do Differently
- Vacuum injection equipment removes all air before resin fills the void
- Multiple resin viscosities matched to specific damage types
- UV curing lamps for consistent, controlled cure
- Post-repair inspection to confirm 90–95% clarity restoration
- Lifetime warranty on the repair
When Does a Chip Require Full Replacement?
Replace, don't repair, when:
- The chip is directly in the driver's primary line of sight
- The crack has spread longer than 3 inches
- The chip penetrates both layers of laminated glass
- There are three or more chips in close proximity
- The chip is within 2 inches of the windshield edge
Our Recommendation
If the chip is small and your car is over 10 years old with no comprehensive insurance — a DIY kit is fine. For anything else, call Auto Renu first. We'll assess for free, and if insurance covers it (most East Bay customers pay $0), you get a perfect professional repair with a lifetime warranty. Don't risk a $15 kit turning a $75 repair into a $400 replacement.
Need Auto Glass Service in the East Bay?
We come to you — home, office, or anywhere you park. Same day service, often free through insurance.