How Big of a Crack in a Windshield Can Be Repaired?

• Bullseye Cracks: These circular cracks are caused by a direct impact, such as a small stone hitting the windshield. If the diameter is less than 1 inch, the crack can be filled with resin, resulting in a smooth and clear finish.
• Star Cracks: Star cracks have thin lines radiating from a central point. When they are under 3 inches, they are typically repairable. Quick repair helps prevent the lines from spreading, ensuring a long-lasting fix.
• Linear Cracks: Linear cracks, also called stress cracks, run straight across the windshield. If they measure less than 14 inches and do not extend to the edges, they can usually be repaired effectively.
• Combination Cracks: Combination cracks involve multiple types of damage, such as chips with radiating lines. As long as the overall damage is limited, combination cracks can be repaired with advanced resin techniques, preserving both strength and appearance.

• Location of the Crack: Cracks located in the center of the windshield are generally easier to repair. Edge cracks, on the other hand, are more prone to spreading because they are near the windshield’s flex points. Early repair of central cracks ensures lasting results, while edge cracks may require extra attention.
• Depth of the Crack: Windshields are made of laminated safety glass, consisting of two layers of glass bonded with a polyvinyl butyral (PVB) interlayer. If the crack only affects the outer layer, it can be repaired effectively. However, if both layers are damaged, replacement is often recommended for complete safety.
• Time Since the Crack Appeared: Promptly repairing cracks ensures the best results, as it prevents dirt, moisture, and other elements from affecting the damaged area. Timely service makes the repair process smoother and more effective, helping to restore the windshield’s clarity and strength.

Repairing a windshield crack early offers several benefits:

• Prevents Further Damage – Addressing cracks promptly prevents them from spreading due to road vibrations and temperature changes.
• Restores Structural Integrity – The windshield provides essential structural support for the vehicle. Proper windshield repair ensures it continues to offer protection during accidents or collisions.
• Improves Visibility – Cracks can cause glare or distortions, especially in bright sunlight. Repairing them restores clarity, ensuring safer driving conditions.

At West Covina Car Glass, we use advanced tools and techniques to repair windshield cracks efficiently. The repair process involves the following steps:

Cleaning the Crack – The damaged area is thoroughly cleaned to remove any debris or moisture.

Resin Injection – A specially formulated resin is injected into the crack under controlled pressure. This resin bonds with the glass, restoring its strength.

UV Curing – The resin is cured using ultraviolet (UV) light, ensuring a durable and long-lasting repair.

Polishing – Once cured, the repaired area is polished to smooth out the surface and enhance visibility.

While many cracks can be repaired, there are situations where windshield replacement is the safer and more effective choice:

• Cracks Over 14 Inches – Larger cracks may compromise the windshield’s structural support, making replacement a better option.
• Edge Cracks – Cracks near the perimeter of the windshield require special attention, as timely replacement helps maintain the glass’s long-term durability and strength.
• Cracks Penetrating Both Layers – If the crack affects both layers of laminated glass, replacement ensures optimal safety.

Windshield crack repair is a practical and cost effective solution for most cracks under 14 inches in length. When addressed early, repair restores the windshield’s strength, clarity, and appearance, ensuring a safe driving experience. If you’re dealing with a cracked windshield, contact West Covina Car Glass for expert evaluation and professional repair services. Their experienced team uses advanced resin and UV curing techniques to deliver long lasting results.

Taking prompt action helps extend the life of your windshield and keeps your vehicle safe on the road. With professional care, most cracks can be repaired quickly, allowing you to drive with confidence.