Types of Windshield Cracks and Chips: How to Identify Yours (Florida Guide)
Windshield damage comes in two families: chips (a small impact point) and cracks (a line running through the glass). The chips you will see most are the bull’s-eye, the star break, the half-moon, and the combination break; the cracks you will see most are the stress crack (which shows up with no impact at all), the edge crack, and the long floater crack out in the open glass. As a rule of thumb, a chip smaller than a quarter or a single crack under about six inches is usually repairable, while edge cracks, long cracks, and anything in the driver’s direct line of sight usually means replacement. Below is how to tell which one you are looking at.
A rock skips off a landscaping trailer on the Suncoast Parkway, taps your glass, and leaves a little mark. Is that the kind you can ignore for a week, the kind to fix now, or the kind that means a new windshield? The answer starts with what type of damage it is, because the shape tells you almost everything about whether resin can save it. Here is a plain-language field guide to the breaks we see every day on Florida windshields, and what each one usually means for you.
First, is it a chip or a crack?
These two words get used interchangeably, but they are not the same thing, and the difference decides your options. A chip is damage at a single point of impact, where a stone knocked a small piece out of the outer layer of glass. A crack is a line, a split that runs along the glass, sometimes from a chip and sometimes from nothing you ever saw hit it. A chip caught early is the easiest, cheapest thing to fix, and a same-day windshield repair usually settles it. A crack is more of a race, because a crack wants to grow. Most windshield damage is a chip, a crack, or a chip that has started throwing off a crack, and once you can name it you can see which way it is heading.
The common types of windshield chips
Chips are named for the pattern the impact leaves behind. Four cover most of what lands on a Florida windshield:
- Bull’s-eye. A clean, dark circle around a central point, like a tiny dartboard where the stone hit. It is the most textbook chip there is, and while it stays smaller than a quarter it is almost always a straightforward repair.
- Star break. A central pit with short cracks, the “legs,” radiating out like a starburst. Star breaks are still repairable when the legs are short, generally under about three inches, but they grow faster than a bull’s-eye, so they are the ones we most want to catch before Florida heat stretches those legs.
- Half-moon (partial bull’s-eye). A crescent rather than a full circle, when the impact only carved out part of the cone. It behaves like a bull’s-eye and is usually repairable under about an inch.
- Combination break. Exactly what it sounds like, a bull’s-eye or half-moon with star legs coming off it. These take more care to fill so they do not spread later, and once the whole area passes about two inches across, it is past a repair.
There is also the plain surface pit, a fleck of glass gone from the top layer with no crack under it. Pits are cosmetic and rarely need filling, but a windshield peppered with them scatters oncoming headlights at night, which is its own reason to keep an eye on the glass.
The common types of windshield cracks
Cracks are named for where they sit and what set them off. The three we quote most in Florida are very different problems:
- Stress crack. The strange one, because nothing hit the glass. A stress crack appears on its own, usually a clean line that starts at an edge, when the windshield expands and contracts through a big temperature swing. It is the most common no-impact crack we see, and because it does not start from a filled-in chip, it often cannot be repaired.
- Edge crack. A crack that starts within roughly two inches of the perimeter, where the glass is bonded to the frame and carries the most load. Edge cracks spread quickly and compromise the structure the windshield adds to the roof, so they almost always mean a replacement rather than a repair.
- Floater (long) crack. A single crack running across the open middle of the glass, away from the edges. A short floater under about six inches can sometimes be stopped, but once a crack passes that length, or reaches an edge, repair is no longer the safe call.
The pattern is worth saying out loud: chips are about size, cracks are about length and location. A stone chip you notice today is usually the good news. A line that has appeared on its own, or is creeping toward the edge, is the version that tends to end in new glass.
At a glance: which damage is usually repairable?
Here is how the common types sort out. “Usually” is doing real work in this table, because the exact call depends on size, depth, and whether the damage sits in your line of sight, but this is the shape of it:
| Damage type | What it looks like | Usually repairable? |
|---|---|---|
| Bull’s-eye | Dark circle around one impact point | Yes, under a quarter |
| Star break | Central pit with short radiating legs | Yes, while the legs stay short |
| Half-moon | Crescent / partial circle | Yes, under about an inch |
| Combination break | Bull’s-eye plus star legs | Sometimes, under about two inches |
| Stress crack | A line with no impact point | Often no |
| Edge crack | Line within ~2 inches of the frame | No, replace |
| Floater / long crack | Line across the open glass | Only if short and central |
Two things override every row. If the damage sits in the driver’s direct line of sight, we usually replace even when the size says “repairable,” because a filled spot can leave a faint distortion right where you look most. And if you are not sure which row you are in, that is a two-minute look for us, not a guess for you, before you ever commit to a windshield replacement. Our fuller walk-through of whether a cracked windshield can be repaired covers the gray areas in detail.
Why Florida heat changes the math
Type tells you where damage starts; Florida weather tells you how fast it moves. Glass expands in the sun and contracts when you blast the A/C, and a car baking in an August lot can hit dashboard temperatures well over 150°F. That daily stretch and shrink works a chip’s legs like bending a paperclip, which is how a repairable star break on Monday becomes a floater crack by the weekend, and why stress cracks show up here without any stone at all. We break down why cracks spread in Florida heat if you want the longer version.
Key takeaways
- Windshield damage is either a chip (one impact point) or a crack (a line); the type tells you almost everything about repair vs. replace.
- The chips to know are the bull’s-eye, star break, half-moon, and combination break; the cracks to know are the stress crack, edge crack, and floater.
- Repairable, as a rule: a chip under a quarter or a single crack under about six inches, away from the edge and out of the driver’s view.
- Edge cracks and stress cracks usually mean replacement, because they are structural and do not start from a fillable impact point.
- In Florida heat a small break spreads fast, so identifying it early is what keeps a repair a repair.
Not sure what you’re looking at?
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Get a free quoteFrequently asked questions
A crack appeared on my windshield with no impact. What is it?
That is almost always a stress crack. It comes from the glass expanding and contracting through temperature swings rather than from a stone, which is common in Florida when a hot windshield meets a cold blast of A/C. Stress cracks usually start at an edge and often cannot be repaired, so it is worth having one looked at before it runs further.
What is the difference between a chip and a crack?
A chip is damage at a single point of impact, where a stone knocked a small piece out of the glass. A crack is a line that runs through the glass, which may grow from a chip or appear on its own as a stress crack. Chips are judged mostly by size; cracks are judged by length and how close they are to the edge or your line of sight.
Is a star break repairable?
Usually, if you catch it early. A star break has a small central chip with short cracks radiating out, and while those legs stay short (roughly under three inches) resin can fill it and stop the spread. Star breaks grow faster than a bull’s-eye, though, so the window to repair one is shorter, especially in the heat.
Why are edge cracks not repairable?
An edge crack starts within about two inches of the windshield’s perimeter, where the glass is bonded to the frame and does the most structural work. That area carries load, spreads damage quickly, and cannot be reliably restored with resin, so an edge crack almost always means a replacement rather than a repair.
How big can a crack be and still be repaired?
As a rule of thumb, a single crack under about six inches, or a chip smaller than a quarter, is repairable, as long as it is not on the outer edge and not sitting in the driver’s direct line of sight. Past those limits, or once there are several long cracks, replacement is the safe option.
Does the type of damage change whether insurance covers it?
Not in Florida. Glass work falls under comprehensive coverage, and Fla. Stat. § 627.7288 waives your deductible on both windshield repair and replacement, regardless of whether it is a chip, a star break, or an edge crack. What the type changes is the price before insurance: a repair is far cheaper than a replacement, so identifying and fixing damage while it is small is almost always the least expensive path. Here is what chip repair actually costs in Florida.
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