How to Repair a Cracked Windshield?
2 Answers
Windshield crack repair method: 1. First, attach a small mirror to the inside of the glass to better reflect the condition of the crack; 2. Place a triangular suction cup on the glass, aligning the center of the suction cup with the impact point of the crack. Then, slowly position and align the vacuum injector with the damaged point on the glass. Use the vacuum function of the tool to first extract any residual air inside the damaged point, then apply pressure to inject the resin from the repair tool into the damaged point of the glass; 3. Pull up the lever of the vacuum injector and wait for 5 to 10 minutes, closely observing the small mirror for any bubbles. If no more bubbles appear, it indicates that the air inside the crack has been completely extracted. If bubbles continue to appear, wait longer; 4. Lower the lever. At this point, observe from the inside of the glass to clearly see the flow of the repair resin gradually covering the damaged point; 5. After the adhesive fully enters the crack, remove the repair tool. Then, cover the repaired area with a transparent plastic film and use a UV lamp to quickly cure the repair resin; 6. Once the resin has solidified, remove the UV lamp and peel off the transparent plastic film. Use a wallpaper scraper to gently remove any excess resin remaining on the glass, leveling it out to complete the windshield repair process.
Last year, a small crack appeared on my windshield after being hit by a stone, and I immediately took action to repair it using a DIY kit—the process was incredibly simple. Step one: thoroughly clean the cracked area to ensure no dirt remains. Step two: use tape to position and align the crack’s source, then inject transparent resin. Step three: wait a few minutes for it to seep into the crack—I used a UV light to speed up curing. Finally, scrape off any excess resin, leaving almost no visible trace. The whole process took just half an hour and cost only a few dozen dollars, saving me the hassle of visiting a repair shop. The key is to act quickly; otherwise, temperature changes or vibrations could expand the crack, affecting visibility. After the repair, the glass regained its strength, allowing for safe driving without issues. During regular car washes, I make it a habit to check the windshield’s condition—prevention is practical and effective.
