When repair works (and when it doesn't)
The general rule of thumb most reputable shops use:
- Length ≤ 6 inches. Anything longer is borderline; longer than a dollar bill is replacement.
- Not at the edge of the windshield. Edge damage compromises the structural seal — repair won't hold.
- Not in the driver's primary line of sight. Even after repair, the resin leaves a faint scar. State inspection requirements vary; for safety reasons most shops decline driver-side repairs.
- Not deep into the inner laminate. If you can feel the chip with a fingernail going deeper than the outer glass layer, it's marginal.
- Single damage point. Multiple chips in the same panel or a "spider" crack pattern usually mean replacement.
If you check all five boxes, repair is the cheaper, faster, and structurally sound choice. The estimator will route your specific case automatically — describe the damage and it picks the right path.
Cost range
$80 to $150 in the KC metro for a single chip. Multi-chip repairs on the same windshield add about $25 per additional chip. Most shops include a 1-year warranty: if the repair fails and you need a replacement, the repair fee is credited toward the new windshield.
If you have comprehensive auto insurance, the cost to you is typically $0. See does insurance cover windshield replacement for the policy specifics.
What the repair process looks like
1) The tech inspects the damage and confirms it's repairable. 2) The damaged area is cleaned and any loose glass particles are vacuumed out. 3) A bridge tool is mounted over the chip, vacuum drawn, then UV-cured resin injected under pressure. 4) The resin is cured under UV light for a few minutes. 5) Excess resin is razored flush with the glass and polished.
Total: about 30 minutes. You can drive immediately. Cosmetic result: the chip is dramatically less visible but rarely fully invisible.
When it won't work — and what comes next
If the damage fails any of the five rules above, you're looking at replacement. The estimator will quote both options when it's a close call. See windshield replacement for the full breakdown on pricing, ADAS calibration, and timing.
Why act fast
Temperature swings are the biggest spreader. A chip in 75-degree weather can become a 12-inch crack overnight when the temp drops below freezing and you crank the defroster. Getting a $100 repair scheduled within a week of the damage is the difference between a 30-minute fix and a 3-hour replacement.
Frequently asked questions
- A typical chip repair runs $80 to $150 in the Kansas City metro. Many comprehensive insurance policies cover chip repair with a $0 deductible because repairing a chip is dramatically cheaper than paying for a future replacement after the crack spreads.
- Generally no. Cracks longer than 6 inches, cracks that reach the edge of the windshield, cracks in the driver's primary line of sight, and multiple intersecting cracks usually need a full replacement. There are exceptions for specific resin systems, but the conservative answer is anything over 6 inches is replacement territory.
- About 30 minutes. The technician vacuums air out of the damaged area, injects a UV-cured resin, and polishes the surface flush. You can drive immediately after. The repair won't make the chip completely invisible, but it stops the spread and restores roughly 95% of structural strength.
- A properly executed repair stops the existing damage from spreading. It won't protect the area from new impacts. If the original damage was deep into the inner laminate or had a crack already running, the repair may fail and a replacement becomes necessary — most shops will credit the repair fee toward the replacement.
- Call your insurance first. Most comprehensive policies cover chip repair at $0 deductible — it costs them nothing and prevents a $400+ replacement claim later. There's no surcharge or rate hike for a no-fault glass claim under almost every major insurer.