DIY Guide: Temporary Fixes for Cracked Car Windows

Jun 03, 2025By James Doy
James Doy

Introduction to Temporary Fixes

Cracked car windows can be a real hassle, especially when you're not ready to pay for a professional repair. Fortunately, there are several temporary solutions that can help you prevent the crack from spreading further and maintain the safety of your vehicle. In this DIY guide, we'll explore some effective methods to temporarily fix cracked car windows while you plan for a permanent solution.

Tools and Materials You'll Need

Before you start, make sure to gather the necessary tools and materials. Having everything ready will make the process smoother and quicker. Here's what you'll need:

  • Clear nail polish or super glue
  • Windshield repair kit
  • Plastic resin
  • Razor blade
  • Microfiber cloth
  • Masking tape
car repair tools

Using Clear Nail Polish or Super Glue

If the crack is minor, clear nail polish or super glue can be a quick fix. These materials help to seal the crack and prevent it from spreading. Here's a step-by-step guide:

  1. Clean the cracked area with a microfiber cloth to remove any dirt or debris.
  2. Apply a thin layer of clear nail polish or super glue over and along the crack.
  3. Allow it to dry completely. This might take a few hours, depending on the product used.
  4. Once dry, use a razor blade to carefully remove any excess material.

Windshield Repair Kit

For slightly larger cracks, a windshield repair kit can be an effective option. These kits are available at most auto parts stores and come with everything you need to fill and seal the crack. Follow these steps:

  1. Clean the window with a microfiber cloth.
  2. Follow the instructions provided in the repair kit, which typically involve applying resin into the crack using a specialized applicator.
  3. Let the resin cure as per the kit instructions, usually in direct sunlight.
  4. Once cured, use a razor blade to remove any excess resin from the surface.
windshield repair

Applying Plastic Resin

Plastic resin is another alternative for temporary repairs. Like the windshield repair kit, it helps to bond the glass and minimize crack propagation. Here's how you can use it:

  1. Thoroughly clean the cracked area with a microfiber cloth.
  2. Apply plastic resin over the crack, ensuring it fills in completely.
  3. Smooth out any bubbles with a razor blade.
  4. Allow it to cure in sunlight for the recommended time on the product label.

Preventative Measures

Avoid putting pressure on the cracked area as much as possible. Protect your car from extreme temperature changes, which can cause the crack to expand. It's also wise to refrain from using your car's defroster directly on the cracked window.

car window repair

Conclusion

While these temporary fixes can help maintain your car's window integrity for a short period, it's important to remember that they are not permanent solutions. Cracked windows should be professionally repaired or replaced as soon as possible to ensure your vehicle remains safe and roadworthy. In the meantime, these DIY methods can effectively hold things together until you're ready for a full repair.