How to Repair an Internal Crack in Your Car’s Windshield When There’s No Crack on the Outside
Repairing an internal crack in your car's windshield can be challenging, especially when the crack is not visible from the outside. However, with the right steps and tools, you can address the issue effectively. Here’s a comprehensive guide to help you determine the best course of action.
Assessing the Damage
The first step in repairing an internal crack is to assess the extent of the damage. Here are some guidelines to follow:
Check Visibility: Determine if the internal crack obstructs your view. If it does, it may be safer to replace the windshield rather than repair it. If the crack is affecting your visibility, prioritize safety. Size of the Crack: If the crack is longer than a few inches or has multiple branches, it is often recommended to replace the windshield for safety reasons.Gathering Necessary Tools and Materials
Before you begin, make sure you have the necessary tools and materials for windshield repair:
Windshield Repair Kit: Available at auto parts stores, these kits typically include repair resin, an injector tool, and a curing strip. Razor Blade or Utility Knife: For precise work and to clean the area. Clean Cloth: For cleaning the area around the crack. Isopropyl Alcohol: To clean the surface and promote better adhesion of the repair resin. Vacuum (Optional): To help remove air bubbles from the resin.Cleaning the Area
To ensure the best results, it’s crucial to clean the area around the crack:
Use a clean cloth and isopropyl alcohol to remove dirt and oil from the surface. This step helps in achieving better adhesion of the repair resin.Following Repair Kit Instructions
The next step is to prepare and inject the repair resin:
Prepare the Resin: Most kits come with a resin that needs to be mixed according to the manufacturer's instructions. Inject the Resin: Use the injector tool from the repair kit to fill the crack with resin. Ensure that the resin fills the crack completely to seal it effectively. Remove Air Bubbles: If the kit includes a vacuum tool, use it to remove air bubbles from the resin. If not, gently tap the area to release any trapped bubbles.Curing the Resin
After injecting the resin, allow it to cure:
Place the curing strip over the repair area as specified in the kit. Exposing it to sunlight or using a UV light (if provided) can help cure the resin. This process typically takes about 30 minutes to an hour.Finishing the Repair
Once the resin is cured, you can finish the repair:
Use a razor blade to carefully scrape off any excess resin and smooth the surface.Inspecting the Repair
After completing the repair, it’s important to inspect the windshield to ensure that the crack is less visible and that the integrity of the windshield has been restored.
Considering Professional Help
If you are unsure about the repair process or if the crack is significant, it’s best to consult a professional windshield repair service. Professionals can provide a more thorough and reliable repair.
Important Notes
Safety First: If the crack compromises the structural integrity of the windshield, it is crucial to replace it rather than attempt a repair. Insurance: Check with your insurance provider to see if windshield repairs or replacements are covered.By following these steps, you can effectively repair an internal crack in your windshield. Remember, if in doubt, always opt for professional assistance to ensure safety and compliance with local regulations.