How to Repair a Car Window Scratch

A small scratch in your windshield can quickly get a whole lot worse, so it’s important that you fix it quickly. There are a few steps that you will need to follow before you can effectively repair the scratch.

There are a few things that you will need before getting started, including unmounting your radar detector device, a glass repair kit, rubbing compound with Cerium Oxide, a non-abrasive cloth, and glass cleaner product.

Take a Close Look at the Scratch

The first thing that you need to do is determine what sort of scratch you are dealing with. You can get all the information you need by simply running your finger over it. If it’s a simple surface scratch, it will feel smooth to the touch. Deeper scratches are much more troublesome and cannot be fixed with a simple glass repair kit.

Get a Glass Repair Kit

You can get a basic glass repair kit at just about any story that sells auto parts and supplies. The kit you purchase will include a rubbing compound that can be used to get rid of the scratch. There are many of these repair kits, but you will need to get one with a strong compound.

Clean the Windshield

Next you will need to clean the windshield completely using only soap and water. Make sure that you get all of the soap or glass cleaner off the windshield before drying it with a clean, non-abrasive cloth. Take the rubbing compound that came with the kit and start applying it to the scratch. The compound should have the consistency of toothpaste, and it’s very easy to put on.

Spray some water on the compound and rub it with a soft cloth. You don’t want to use a lot of pressure when you do this.

Let it Dry

Next you will just need to leave the compound on the scratch to dry. It should tell you approximately how long it takes to dry on the packaging, but it’s usually around half an hour. After it has had a chance to dry completely, wash the windshield thoroughly and dry it off with a cloth.

It will be necessary to apply the compound to the scratch again in the future. The length of time between applications will depend on a number of factors, including how big the scratch is. If you use a decent rubbing compound, you shouldn’t need to reapply it very often.

If the surface scratch gets deeper (you can dig into it with your fingernail), you will eventually have to replace the windshield. Deep cracks cannot be fixed, so you will need to keep this in mind. When you notice any scratches on your windshield, it is important to find out if it’s just a surface scratch or deeper. You don’t want to leave even surface scratches left untreated, as they can become unfixable over a fairly short period of time. This method works well for most surface scratches, but it is not a long-term solution.

This post was written by: Martin Hand


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Martin Hand

About Martin Hand

ASE Certified L1 Advanced Mastertech. Martin Hand has over 15 years experience in Asian and European Import Auto Repair. Specializing in electrical diagnosis, engine performance, AT/MT transmission repair/rebuild. Martin is also pursuing a degree in Computers Science & Information Systems starting at Portland Community College while he plans to transfer to OIT. Certified in Java application level programming, experienced with other languages such as PHP, Ruby, JavaScript and Swift. Martin has future plans of automotive diagnostic software development.

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