Windshield Damage 101: When Is It a Chip and When Is It a Crack?

Ever seen a tiny mark on your windshield and wondered… “Eh, it’s nothing… right?”

Well, not always! A small spot can quickly turn into a long, nasty crack — the kind that ruins your day and your windshield. Knowing the difference between a chip and a crack can save you money, time, and stress.

At GlassFixit Auto Glass, we help Santa Clara drivers understand their auto glass damage so they know exactly what to do next. Here’s your simple guide to identifying what’s on your windshield — and what action you should take.

What Exactly Is a Chip?

A chip happens when a small piece of glass actually breaks off your windshield because something (usually a rock) hits it. Think of it like a little crater — shallow, but visible.

Common Types of Chips:

• • Bullseye: A circular mark that looks like a target.
    
    
  • Star Chip: Small lines spreading out from the center.
    
    
  • Half-Moon: Like a bullseye but not a perfect circle.
    
    
  • Combination Chip: A mix of two or more chip types.
    
    

How Serious Is a Chip?

Most chips are repairable — especially if they’re:
   ✔ Under the size of a quarter
   ✔ Not too deep
   ✔ Not in the driver’s direct line of sight
   ✔ Only one in number

But chips don’t stay chips forever. Heat, cold, bumps, and even your wipers can turn a tiny chip into a long, dangerous crack.

So… What’s a Crack?

A crack is a line that appears on the windshield — short or long — that usually starts from a chip or from the edge of the glass.

Types of Cracks Include:

• • Edge Cracks: Start at the outer border of your windshield and spread fast.
    
    
  • Stress Cracks: Appear without impact (temperature changes are usually the culprit).
    
    
  • Long Cracks: More than 6 inches — these often require a full replacement.
    
    
  • Floater Cracks: Start in the middle of the windshield.
    
    

Cracks Are More Serious Because:

• • They spread quickly
    
    
  • They weaken the whole windshield
    
    
  • They can’t be “repaired”
    
    
  • Many cracks automatically require windshield replacement
    
    

If you see a line instead of a circular mark — that’s a crack, and that’s your cue to act fast.

Chip vs Crack: The Quick Comparison