How to Repair a Rear Window Crack/Chip

If you have spotted a chip or crack in the rear window of your car, you are not alone. A car’s damaged rear window, whether from a small collision or road debris, is a typical problem that, if ignored, can cause more serious issues.

In addition to reducing visibility, it might end up causing structural damage to your vehicle. Installing a rear window may appear tough, but if you follow the proper methods, you can do it yourself.

This blog will lead you through a simple yet comprehensive procedure for stress-free windshield repair. Join in!

Assess the Damage

Assessing the extent of the damage to your windshield is essential before you begin the rear window repair procedure. You can choose a basic do-it-yourself repair kit for smaller chips, but professional assistance may be required for major damages. Below are some of the factors that you must consider.

• Size of the Crack/Chip: While you can fix smaller cracks (1 inch or under) at home, you might require expert attention for larger chips and cracks.
• Location: Is the crack near the edge of the rear window on a car or across the defrost lines? These areas are more prone to spreading cracks and may require rear window replacement.
• Depth of Damage: If the crack has gone through multiple layers of glass, it is usually a more complicated repair. For smaller, more superficial chips and cracks, you can handle the repair yourself with the right tools.

Gather Your Materials

To start the process of repairing a chip in the windshield, you need a few basic materials. You can find a majority of these things in windshield repair kits, which are sold at auto parts stores as well as online.

• Windshield Repair Kit (includes resin, an applicator, and curing strips)
• Razor blade (for cleaning and removing excess resin)
• Microfiber cloth (for cleaning the damaged area)
• Glass cleaner (to remove dirt and debris)
• Clear tape (optional, to protect the area during the repair)
• Gloves and safety glasses (for protection while handling glass and chemicals)

Make sure you have everything you need before starting the repair process, so you don’t have to pause midway through.

Prepare the Area

Before applying any repair material, it is crucial to clean and prep the area around the crack or chip. A smooth, debris-free surface will ensure that the resin adheres properly and seals the damage effectively.

• Park in a Dry, Shaded Area: Direct sunlight can affect the curing process, so it is best to work in a shaded spot.
• Clean the Glass: Wipe the rear window clean with the help of a microfiber cloth and glass cleaner. Put extra focus on the damaged area, since any remaining dirt can render the repair weak.
• Remove Loose Glass: If there are small glass fragments around the crack or chip, use a razor blade to gently remove them. Be careful not to widen the crack during this step.

Apply the Repair Resin

This step is where you will start the actual repair. Here’s how to fix car windshield chip in the right way:

• Center the applicator or syringe over the crack or chip. Most windshield repair kits come with a tool designed for this purpose. Make sure the application is centered directly over the damage.
• Apply steady pressure to the applicator, which will inject the resin into the damaged area. Be patient—apply just enough pressure to fill the crack without overdoing it. When air bubbles rise to the surface of a fissure, it indicates that the resin is expanding inside.
• As you pour the resin over the damaged area, make sure there are no air bubbles left. Use the app to press out any lingering visible air bubbles.
• Use a curing strip (if included). Place a curing strip over the resin to keep it in place as it hardens, or move on to the next step if your kit requires UV light curing.

Cure the Resin

Curing the resin is a critical part of the process, as it solidifies the repair and ensures the crack doesn’t spread further. Depending on your kit, you will either need sunlight or a UV light to cure the resin.

• Follow the manufacturer’s instructions. Every repair kit is slightly different, so stick to the recommended curing time. Most kits require about 20 to 60 minutes.
• Allow the resin to fully cure. During the curing process, avoid moving your automobile or the back window. If you are using UV light, keep it focused on the affected region during the therapy.

Scrape Off Excess Resin

Once the resin has fully set, remove any residual material to complete the project.

• Use a Razor Blade: Scrape any solidified glue that has clung to the glass surface using a razor blade. Scratching too hard may worsen the damage, so take care.
• Wipe the Area: Using a clean microfiber cloth, polish the area and remove any remaining residue. The structural integrity of your back glass should be restored, with any cracks or chips hardly visible.

When to Seek Professional Help

In most circumstances, repairing a chip or fracture in an automobile’s rear window is a simple procedure. Nonetheless, there are situations when obtaining professional help is necessary.

Call an auto glass specialist if you face the following issues:

• The crack is larger than an inch in diameter or is expanding.
• The damage is located along the rear window’s edge or crosses defrost lines.
• You don’t know how to mend it, or the damage is in a location that will make it difficult to observe.

In these cases, a skilled automotive glass expert can assess the damage and provide a more permanent solution.

Conclusion

Fixing a rear window crack or chip yourself is a smart and cost-effective way to maintain your vehicle.

By following the steps outlined in this guide—assessing the damage, gathering materials, prepping the area, applying the resin, and curing it properly—you can avoid costly replacements and ensure your car is safe to drive. However, don’t delay if the damage is significant.

Don’t be afraid to get professional assistance, though, if the damage is significant or you’re unclear about the repair procedure. Join NuVision Auto Glass to protect your vehicle. Our experts are ready to provide outstanding AutoGlass repair services including Windshield repair, ADAS Calibration, window repair & windshield replacement ensuring that your rear window repair is finished as soon as possible, efficiently, and with the highest care.

Contact us now for further information!

FAQs

How do you fix a cracked windshield chip?

To fix a cracked windshield chip, you must first clean the area. Then, apply resin and allow it to cure, which will help prevent the damage from spreading.

Can you repair a chip in a side window?

No, you cannot repair a chip in a side window since these windows are made of tempered glass. In case of a chip or crack, side windows can shatter into smaller pieces, so they must be replaced.

Does a cracked glass repair kit work?

Yes, repair kits work effectively for minor chips and cracks. However, they are less successful on larger, deeper damage and in critical visibility areas.