Common Windshield Damage Types: What They Are and Whether to Repair or Replace

Not all windshield damage is the same. A small bullseye chip and a long edge crack are completely different problems — one takes 20 minutes and costs nothing with insurance, the other requires a full replacement. Knowing what you're looking at helps you act fast on the right things and avoid paying for more than you need.

Here's a breakdown of the most common damage types, what causes them, and how they're typically treated.

What it looks like: A circular impact point with a dark center, resembling a target or — as the name suggests — a bullseye. The damage radiates outward in a clean circle from the point of impact.

What causes it: A round object (usually a rock or pebble) hitting the glass at a direct angle.

Size range: Typically the size of a dime to a quarter.

Repair or replace? Almost always repairable — this is one of the cleanest damage types to fill with resin. The circular shape holds the resin well and the repair is nearly invisible.

Urgency: Moderate. Bullseyes are stable but will spread if moisture gets in or the glass flexes repeatedly. Repair within a few weeks.

What it looks like: A central impact point with cracks radiating outward like the points of a star. The legs can vary in length and number — some have 3–4 short legs, others have 8–10 longer ones.

What causes it: A sharp or irregular object hitting the glass, or a high-velocity impact that causes the glass to fracture in multiple directions at once.

Size range: Varies widely — from the size of a quarter to larger than a dollar bill.

Repair or replace? Usually repairable if the overall diameter stays under about 3 inches and none of the legs have extended into a long crack. Larger star breaks or those with long radiating cracks may require replacement.

Urgency: High. The multiple fracture lines give moisture and debris more entry points. Star breaks spread faster than bullseyes — don't wait.

What it looks like: A bullseye or star break with one or more cracks extending outward from the main impact point. It's essentially a chip that has already started to crack.

What causes it: A significant impact, or a chip that was left unrepaired long enough to begin spreading.

Size range: Depends on how far the cracks have traveled.

Repair or replace? Borderline — if the cracks are short (under 3 inches) and the overall damage fits within a dollar bill, repair is often still possible. Longer cracks tip the decision toward replacement.

Urgency: Very high. This damage is already progressing. Every day increases the chance it crosses the line from repairable to not.

What it looks like: A tiny divot or nick in the outer layer of glass — smaller than a pencil eraser, with no visible cracking. It may catch your fingernail if you run it across the surface.

What causes it: Small debris, sand, or gravel hitting the glass at low speed. Very common on Florida highways.

Repair or replace? Usually no treatment needed — surface pits that haven't penetrated through the outer layer of glass are cosmetic. They don't compromise structural integrity and don't spread. If the pit is directly in your line of sight and causing glare, a light polish can sometimes reduce it.

Urgency: Low. Monitor it — if it develops a crack from the center, treat it like a chip.

What it looks like: A crack that starts in the middle of the windshield, away from any edges. It may be straight, curved, or branching. There's often no obvious impact point — it can appear to have come from nowhere.

What causes it: Stress fractures from temperature extremes (blasting the defroster on a cold windshield is a common culprit), pre-existing micro-damage that finally gave way, or a manufacturing defect.

Size range: Can be short (a few inches) or long (spanning most of the windshield).

Repair or replace? Depends on length. Short floater cracks under 6 inches may be repairable. Longer ones almost always require replacement. Because there's no impact point to anchor the resin, floater cracks are harder to treat than chip-based damage.

Urgency: High. Floater cracks tend to grow quickly, especially in heat. A 4-inch crack can become a 14-inch crack after one hot Florida afternoon.

What it looks like: A crack that starts within 2 inches of the windshield's edge, or one that has traveled to the edge from an interior impact point.

What causes it: Impact near the edge, temperature stress, or a chip near the perimeter that spread outward.

Size range: Can be short but is always serious regardless of length.

Repair or replace? Almost always replacement required. The edges of the windshield are under constant stress from the frame and the vehicle's flex. Resin can't maintain a stable bond in this zone, and edge cracks compromise the seal between the glass and the frame — which affects both water intrusion and structural integrity.

Urgency: Immediate. Edge cracks spread faster than any other type and can affect the windshield's ability to support the roof in a rollover.

What it looks like: Any crack longer than 6 inches, regardless of origin. May be straight, curved, or branching.

What causes it: An unrepaired chip that spread, a floater crack that grew, an edge crack that traveled inward, or a significant impact.

Repair or replace? Replacement required. Resin can't maintain a bond across a long crack — the glass flexes too much and the crack will reopen. Some shops claim to repair cracks up to 12–14 inches, but the results are inconsistent and the structural integrity isn't fully restored.

Urgency: Immediate. A long crack is a safety issue. It's also illegal in Florida to drive with damage that obstructs the driver's view.

Heat accelerates everything. Glass expands in the sun and contracts overnight — that daily cycle puts constant stress on any existing damage. A chip that might stay stable for months in a cooler climate can spread within days in a Florida summer.

The good news: comprehensive insurance covers both repair and replacement in Florida with a $0 deductible. If you're not sure what type of damage you have or whether it qualifies, call or text us at (941) 281-5012. Send a photo and we'll give you a straight answer — no appointment needed to find out where you stand.

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