How Big of a Windshield Crack Can Be Repaired?

If you’ve noticed a crack spreading across your windshield, your first question is probably:
“Can this be repaired, or do I need a full windshield replacement?”

It’s a valid concern, and the answer depends on a few key factors like the size, depth, location, and type of damage.

In this article, we’ll break down when a crack is repairable, when it isn’t, and what your best course of action is.

What’s Considered a Repairable Windshield Crack?

In general, windshield cracks around a quarter in total size (coin) can often be repaired. However, this isn’t a hard rule. Several factors affect whether a crack can be safely fixed or not.

Let’s explore them.

Factors That Determine If a Windshield Crack Can Be Repaired

1. Length and Size of the Crack

• Chips: Smaller than a quarter (about 1 inch) are almost always repairable.
• Cracks: Up to 1.5 inches may be eligible for repair.
• Longer Cracks: Over 1.5 inches usually require windshield replacement, especially if they’re spreading.

 2. Location on the Windshield

• Away from Driver’s Line of Sight: More likely to be repairable.
• In the Line of Sight: Repairs here may leave minor distortion, so replacement is often recommended.
• Edge Cracks: Cracks that touch the outer edge of the windshield may weaken the structure and usually require replacement.

3. Depth of Damage

• If the crack only penetrates the outer layer of glass, it might be repairable.
• If it reaches the inner plastic or second layer of glass, it’s unsafe to repair and should be replaced.

4. Type of Crack

What Happens If You Don’t Repair the Crack?

Ignoring a small crack can lead to:

• The crack spreading due to vibration or temperature change
• Reduced windshield strength in a collision
• Visibility issues while driving
• A failed safety inspection

In most cases, a quick repair can save you from a more expensive windshield replacement down the road.

What Does a Professional Repair Involve?

At OTB Auto Glass, our trained technicians:

• Evaluate the damage for safety
• Inject premium resin into the crack
• Use UV light to cure the resin
• Polish the surface for clarity and strength
• Offer a lifetime warranty on workmanship and seal

Most repairs take 30 minutes or less, and we service throughout Stoney Creek, Hamilton, Burlington, and surrounding areas.

Get a Free Windshield Assessment Today

Don’t guess, let the experts at OTB Auto Glass determine the safest, most affordable option for your windshield damage.