How To Temporarily Stop A Windshield Crack From Spreading

Do you have a windshield that needs to be replaced due to a large crack? If so, you may be struggling to find the time to have the work done on your vehicle, but notice that the crack is getting bigger. It is possible to slow down how much the crack spreads with this tip that involves some common household materials.

Use Nail Polish or Super Glue

One way to stop a windshield crack from spreading is to use clear nail polish or super glue. The latter is the best option, since the bonding agents in the glue are very strong and should help the patch last a while. However, nail polish will work in a pinch as well. You just need to be sure that all parts of the crack are covered since the material is not as strong as glue.

You can fill the windshield crack by starting at the highest part of the crack and working your way down. Apply the material about one inch above where the crack starts and apply the glue or nail polish in a very heavy layer along the windshield crack. You can use a brush to help push the material into the crack and smooth out the surface. Give the material enough time to dry completely before moving onto the next step.

Use Clear Tape

You will need a roll of clear tape that you can apply directly over the windshield crack. It should be heavy duty packing tape that will not rip and will stick to the glass without any issues. The tape is designed to keep the filling material to the windshield, as well as protect the crack from the wind that impacts against the crack while driving at high speeds. 

The tape should be applied right over the glue or nail polish, also starting about one inch past the start of the windshield crack. Cut the tape into small sections if the windshield crack has twists and turns that do not allow you to use a straight run of tape. If the windshield crack extends into part of your windshield that would obstruct your driving, don't use the tape in that part of the glass. There is a risk of it obstructing your view.

This DIY patch tip should hopefully buy you some time until you can take your vehicle into a local auto body shop to have the windshield replaced. Contact a company near you that offers windshield replacement services in order to learn more.