A chipped windshield doesn’t automatically mean an expensive replacement. Modern windshield repair technology offers a cost-effective alternative. This guide explains how windshield repair works and how you can do it yourself.
While ordinary window glass is strong and affordable, its brittleness makes it unsuitable for cars. When broken, it shatters into dangerous shards. Plastic is safer but lacks scratch resistance. Automakers use tempered glass for side windows; it’s stronger than regular glass and breaks into safer, smaller cubes. However, tempered glass isn’t ideal for windshields due to constant impacts from road debris.
Laminated glass is the solution: two thin layers of tempered glass bonded to a rubber interlayer. This interlayer absorbs shock, preventing breakage from small impacts. A hard hit might cause a chip, usually only affecting the outer layer. In a severe impact, the rubber membrane prevents the windshield from collapsing inward.
Windshield repair effectively addresses chips in the outer layer. You can purchase a windshield repair kit from most auto stores. Ensure the windshield is dry and at room temperature before starting. Use a hairdryer to remove moisture and a cleaner like lighter fluid to eliminate grime.
The repair process involves applying an adhesive strip centered over the chip. After burnishing the strip, attach the adapter vertically and burnish again. Connect the syringe to the adapter and pull the plunger to create a vacuum. Hold for one minute, allowing air to bubble out and the adhesive to seep into the chip.
Once the chip is filled, the resin bonds, creating a seal and preventing further damage. This method also works on cracks, halting their spread. With a successful repair, the glass will no longer spider, saving you from a costly replacement.