How to Know When a Windshield Crack Is Too Big to Repair
Posted in Windshield Repair, on June 29, 2026
Unexpected windshield damage is nothing unusual. A small chip or thin crack can appear suddenly and may worsen quickly. That harmless chip can stretch across the glass after a cold night or a pothole. Luckily, some chips and cracks can be repaired, while others require full replacement. Our specialists at MRM Auto Glass get this question often: “Can this be fixed, or do I need windshield replacement in Richmond Hill?” It all depends on the size of the damage and where it appears. Windshield chip repair is not guesswork—contact MRM Auto Glass for a professional inspection if you’ve noticed damage on your windshield. Plus, knowing when damage has become too severe will help you make the replacement decision before serious consequences. Here’s a low-down.
1. Why Crack Size Matters
Size is the first thing auto glass technicians consider to evaluate windshield damage. Small auto glass chips can generally be repaired. A tiny chip impact can be stabilized before it spreads. Drivers can quickly return to the road in most cases without replacing the entire windscreen.
However, there are limits. The general guideline is that damage larger than a Canadian Toonie cannot be repaired effectively. Same for cracks extending beyond 15 centimetres. Large auto glass cracks create tension across a wider area, and it is hard to restore the windshield’s strength and clarity. That’s why delaying service can cost. What might have been a windshield chip repair could require a complete auto glass replacement in Richmond Hill a week later.
2. The Location of the Crack Can Change Everything
A crack’s location is also important when determining auto glass repair options. Two cracks or chips of identical dimensions can be repairable or irreparable based on where they sit on the windshield.
A crack or windshield damage in your driving line of sight requires replacement. Any repairs here can leave minor distortions that can distract and affect driving at night or in bright sunlight.
Cracks near the outer edges of the windscreen are also a no-go for windshield repair. The outer perimeter is a great support for the auto glass. Cracks around this area can weaken overall windshield stability.
Windshield chip repair is still possible for outer-layer damage. However, damage inside the windshield lamination layer is irreparable, as it cannot restore its original strength and safety.
Technicians often advise windshield replacement in Richmond Hill in these situations to keep the vehicle safe and structurally sound.
3. Signs a Crack May Be Beyond Repair
Continued spreading is a clear indicator that your windscreen damage is beyond repair. A spreading crack that continues to branch out means it’s under active stress. Durable repair is almost impossible for such damage.
Contamination from dirt or moisture is an additional hurdle in windshield chip repair. These contaminants interfere with the repair process and can affect the stability of the final repair.
Multiple chips or combined damage also reduces repair effectiveness. A windshield with several chips is not a candidate for repair. Though each mark may appear minor, the combined damage can really weaken the glass.
Auto glass replacement specialists in Richmond Hill choose complete replacement as a safer and more practical solution for such damage.
Make the Right Call for Your Windshield
Every crack does not mean you need a new windshield. However, not all windshield cracks or chips can be saved. Size or location often becomes a deciding factor for durable auto glass repair. Early windshield repairs are simpler and faster than waiting until replacement becomes unavoidable. A professional inspection from experts like MRM Auto Glass can clarify whether windscreen repair or replacement is the better option.
Our experienced windshield specialists carefully assess every aspect of auto glass damage for clear auto glass solutions based on safety and value. Contact MRM Auto Glass today for trusted repairs and windshield replacement in Richmond Hill. Call now!
