Windshield repair in Charlotte, NC: rock chips filled before they spread

This page is about chips: what can be filled, how a chip repair is done, what it will and will not look like afterwards, and when the honest answer is a new windshield. Cracks are a different job and have their own page, on windshield crack repair in Charlotte. Charlotte Auto Glass is the Charlotte website of Impex Auto Glass, and the repairs are done by Impex at its shop at 5641 David Cox Rd or where your car is parked.

What a chip looks like, and why the shape matters

A windshield is laminated: two layers of glass with a clear plastic layer bonded between them. A stone usually damages only the outer layer. The shape the break takes tells a technician a lot about how it will fill.

• Bullseye. A round, cone-shaped pit, often with a dark ring. These usually fill well because the break is compact.
• Star break. A small center with short legs running out from it. The legs are what spread, so a star is worth filling quickly.
• Combination break. A bullseye with legs. Common from highway gravel, and usually repairable if it is small.
• Surface pit. A tiny nick that has not broken into the glass. Often nothing to fill, but worth a look if it sits in front of the driver.

What all of these have in common is that the break is open to the air. Dirt, car wash soap and rain get into it, and the more that gets in, the harder it is for resin to fill it clearly. That is why a piece of clear tape over a fresh chip is the single most useful thing you can do on the day it happens.

What can be repaired

The industry’s repair standard is ROLAGS, the Repair of Laminated Automotive Glass Standard, administered by the National Windshield Repair Division. Its published guidance is that stone breaks up to two inches in diameter are repairable. That is the outer limit of the standard, not a promise that every two inch break will fill well.

Shops also use plainer rules of thumb. Impex Auto Glass describes small chips as smaller than a quarter, and Impex’s own guide is that a repair may be possible when the damage is small, shallow and away from the edges of the glass. A common industry rule of thumb is that damage smaller than a dollar bill can likely be repaired. None of these is a law; they are ways of saying that size is only part of the answer.

Question	Leans toward repair	Leans toward new glass
How big is it?	Smaller than a quarter	Wider than the standard’s two inches
How deep is it?	Outer layer only	Through to the inner layer
Where is it?	Away from the edges	At or near the edge of the glass
In front of the driver?	Outside the driver’s main view	Right in the driver’s line of sight
How old is it?	Fresh and kept clean	Weeks old, full of dirt, already spreading

How a windshield chip repair is done

Chip repair is a short job compared with a replacement, and the windshield never leaves the car. The steps are the same at the David Cox Rd shop and at your driveway.

1. Inspect. The technician looks at the size, depth and position of the chip and tells you whether it is a good candidate. If it is not, you hear that before any work starts.
2. Clean the break. Loose glass and dirt are taken out of the impact point so the resin can reach the bottom of the break.
3. Fill under pressure. A tool is mounted over the chip and the resin is worked into the break, pushing out air so the resin can fill the legs and the pit.
4. Cure. The resin is hardened in place, so it bonds the broken glass together.
5. Finish. Excess resin is scraped off and the surface is polished so the wipers run smoothly over it.

Because the glass stays in the car, there is no urethane to cure and no calibration of the forward camera. You can usually drive soon after. The technician will tell you on the day.

Why a quick repair is worth it

The case for windshield chip repair in Charlotte NC is mostly about what it avoids. A repair keeps the factory seal around the windshield untouched. It means no new glass to order by VIN, no urethane to cure before you drive, and on a car with a forward camera, no ADAS calibration. And it costs less than a new windshield.

Charlotte weather is hard on a chip. A car parked in the sun all afternoon has hot glass; a cold front and a defroster turned to full put the inside of that same glass under a very different temperature. Each swing works the edges of the break. Add potholes, a door slammed hard, and a car wash, and a chip that would have filled cleanly can run into a crack in a week. A crack can sometimes still be repaired, but the odds get worse as it grows, which is why the crack repair page has a much longer list of cases that end in replacement.

When a chip means a new windshield

Some chips are not worth filling, and a good technician will say so. The common reasons:

• At the edge. Damage at or near the edge of the glass weakens the part of the windshield that is bonded to the car. Impex’s guide is that edge damage means replacement.
• Too deep. If the impact reached the inner layer of glass, resin cannot fix it from outside.
• In the driver’s view. Even a well-filled chip leaves a mark. Right in front of the driver’s eyes, that mark can be distracting, so replacement is often the better choice.
• Already spreading. A chip with legs that keep growing, or a chip that has become a crack, has moved past the easy repair.
• Several breaks. A windshield pitted all over from years of highway driving may be better replaced than filled chip by chip.

If the windshield does need to come out, Impex checks the replacement against your vehicle by VIN, sets the new glass in urethane and, when the car has a forward camera, performs ADAS calibration on site immediately after the replacement. Impex puts a replacement at about one hour plus a short curing period.

Chip repair and your insurance in North Carolina

Glass damage normally falls under comprehensive coverage in North Carolina. The NC Department of Insurance lists breakage of glass and missiles or falling objects among comprehensive losses, and says the coverage pays the cost of repair less any deductible. North Carolina has no zero-deductible glass law, so whether your deductible applies to a chip repair depends on your policy. Some policies include full glass coverage. Ask your insurer before you decide.

A chip repair is not an at-fault accident, so a comprehensive claim for it does not add Safe Driver Incentive Plan points. Insurers may still look at how often you claim. Under G.S. 58-3-180 you choose who does the repair. Impex works with all major insurance providers and can deal with your insurer for you. The glass insurance claims guide explains the steps.

Chip repair at the shop or at your car

Impex Auto Glass’s Charlotte shop is at 5641 David Cox Rd, Charlotte, NC 28269, in north Charlotte. If you are nearby in Mallard Creek, Derita, Highland Creek or University City, the shop is often the simplest place. Call before you come so the technician knows what to expect; the auto glass shop in Charlotte page has what to bring.

A chip repair also suits mobile service well, because the glass stays in the car. Impex can do it in your driveway, in a parking deck in Uptown or in the lot at work, as long as there is room around the car and the weather allows. Heavy rain is the usual reason to move a mobile appointment.

What to do before your appointment

• Put clear tape over the chip to keep out dirt and water.
• Skip the car wash until it is filled.
• Go easy on the defroster and the air conditioning blowing straight onto the glass.
• Close the doors gently.
• Have the VIN, your insurer’s name and your policy number ready if you plan to claim.

Questions people ask