Will the car glass crack again after repair?
2 Answers
There is a certain probability that the car glass will crack after repair, but the possibility is relatively low. The following are the factors that determine whether the glass will crack after repair: 1. The glass repair technique is not up to standard: There is still air in the crack, but it is sealed in the crack by the glass repair agent. When the weather becomes hot, the air in the crack expands due to heat, causing the glass to be pushed open again, resulting in cracking. 2. Poor quality of the glass repair agent: If the quality of the glass repair agent is poor, it will easily be oxidized by air and lose its adhesiveness over time, making the glass unable to adhere and allowing air to enter the crack again, causing the glass to crack once more.
The repaired rear glass may still crack, depending largely on the quality of the repair. As someone who frequently deals with vehicle issues, if the crack is small and high-quality resin material is used and thoroughly injected with strong sealing effects, it is less likely to expand. However, if the original damage was extensive, the edge stress was not fully released, or the repaired area encounters strong impacts or rapid temperature changes—such as alternating hot and cold in winter—the crack may reopen or even enlarge. I must emphasize that choosing a professionally certified repair shop is crucial. They have advanced equipment and meticulous operations, and they provide maintenance advice post-repair, such as avoiding high-speed driving on uneven roads or rapidly cooling the glass with warm water during car washes, which helps extend its lifespan. Additionally, small repairs are cost-effective, but neglecting timely follow-up inspections can increase risks. A quick glance at the crack’s condition before driving can prevent major issues.
