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How big windshield crack can be repaired?

How Big Windshield Crack Can Be Repaired? | OEM Auto Glass


Imagine driving down the road, enjoying the beautiful scenery, when suddenly a rock flies up from the road and hits your windshield. You hear a loud crack, and your heart sinks as you see a long, jagged line appear on your windshield. What do you do now? Can a crack of that size be repaired, or do you need to replace the entire windshield?

When it comes to windshield cracks, it’s important to act quickly and address the issue promptly. In this article, we will explore the process of repairing windshield cracks and discuss the limits of crack size that can be repaired. We’ll also explain why it’s crucial to prioritize windshield crack repair.

Table of Contents

The Process of Repairing Windshield Cracks

Repairing windshield cracks involves a specialized process that requires the expertise of trained professionals. Here’s a step-by-step breakdown of how the repair process typically works:

  1. The damaged area is thoroughly cleaned to remove any debris or dirt that could interfere with the repair.
  2. A specialized resin is injected into the crack using a syringe-like tool. This resin is designed to fill the crack and prevent it from spreading.
  3. The resin is then cured using UV light, which hardens it and ensures a strong bond.
  4. Excess resin is carefully removed, and the surface is polished to restore clarity.

This process can be completed relatively quickly, often within an hour or two, depending on the size and complexity of the crack. It’s important to note that not all cracks can be repaired, and there are limitations to what can be fixed.

Limits of Crack Size That Can Be Repaired

The size of a crack plays a significant role in determining whether it can be repaired or if the windshield needs to be replaced. While different repair shops may have slightly different guidelines, here are some general limits to keep in mind:

  • Long cracks: Cracks longer than 18 inches are typically not repairable and may require windshield replacement.
  • Edge cracks: Cracks that extend to the edge of the windshield are more challenging to repair and may compromise the structural integrity of the glass.
  • Complex cracks: Cracks that have multiple branches or intersecting lines may be more difficult to repair and may require replacement.
  • Deep cracks: Cracks that penetrate through the entire thickness of the windshield are less likely to be repairable.

It’s essential to consult with a professional auto glass technician to assess the severity of the crack and determine the best course of action. They have the expertise to evaluate whether the crack can be repaired or if a replacement is necessary for your safety.

The Importance of Windshield Crack Repair

Now that we understand the process of repairing windshield cracks and the limitations of what can be fixed, let’s discuss why it’s crucial to prioritize windshield crack repair:

1. Safety

Your windshield is a vital safety component of your vehicle. It provides structural support and helps maintain the structural integrity of the vehicle in the event of a collision or rollover. A cracked windshield compromises its strength, making it more vulnerable to shattering upon impact.

2. Visibility

A cracked windshield can obstruct your view of the road, creating blind spots and reducing your ability to react to potential hazards. Even a small crack can cause glare and distortions, impairing your vision and increasing the risk of accidents.

3. Legal Requirements

In many states, driving with a cracked windshield is against the law. If you’re caught driving with a damaged windshield, you may be subject to fines and penalties. By promptly repairing the crack, you ensure compliance with the law and avoid any potential legal consequences.

4. Cost Savings

Repairing a crack is generally more cost-effective than replacing the entire windshield. Most insurance policies cover windshield repair, often with no deductible, making it a convenient and affordable solution. By addressing the crack promptly, you can avoid more extensive damage that may require a costly replacement.


Can a windshield crack be repaired if it’s in my line of vision?

Cracks in the driver’s line of sight may be more challenging to repair, as they can cause distractions and compromise visibility. It’s best to consult with a professional technician to assess the crack’s location and determine if repair is possible.

How long does a windshield crack repair typically last?

When done correctly, windshield crack repair can be a long-lasting solution. However, the lifespan of the repair may vary depending on factors such as the size and location of the crack, the quality of the repair, and how well the windshield is maintained. It’s always best to address any cracks promptly to prevent further damage.


Addressing windshield cracks promptly is crucial for your safety, visibility, and legal compliance. While the size of the crack plays a significant role in determining whether it can be repaired, it’s always best to consult with a professional auto glass technician. They can assess the severity of the crack and recommend the most suitable course of action, whether it’s repair or replacement. Remember, a small crack can quickly escalate into a larger problem, so don’t delay in seeking professional assistance.