A blue Chevy Corvette windshield after getting a though spotless car glass cleaning

Getting Spotless Car Glass

Your car glass will obviously get a good cleaning while you are detailing the car. However, sometimes you are going to need to give it a more thorough, spotless car glass cleaning. Shampoo and your wash mitt alone will not be able to get rid of the greasy film that will build up on your windshield. Nor will it fight off that real stuck-on dirt that clings to your car glass so tenaciously. With a little bit of effort and the right products, you can get spotless glass windows, and it is worth doing an intensive clean every so often. Here is your guide on how to clean car glass.

Use A Clay Bar on Your Windshield

A detailer using a clay-bar on a windshield to get spotless car glass

We are going to start with something a little unexpected, perhaps, and that is using a clay bar on the windshield. The reason you want to do this is that over time a greasy, dirty film builds up on the windshield.  Using your screen wash and wipers or your shampoo and wash mitt will not shift it. It causes streaking and smearing when you are driving in the rain and using your wipers. You need a stronger form of cleaning to get your car’s glass perfectly clean, and claying is the perfect way to do it.

As with using a clay bar on your car’s paint, the technique is the same. Use lots of quick detailer acting as a lubricant. With barely any pressure, work your way methodically across the windshield rubbing back and forth with the clay.

A detailer with white clay-bar in his hand showing the dirt cleaned from a windshield for spot car glass cleaning

This is what the clay picked up on a windshield that, while admittedly dirty, had already been snow foamed and cleaned during the washing session. You can see how much dirt was left. Claying will make a big difference to the clarity of your glass.

Wipe Away Any Leftover Quick Detailer from Your Car Glass

As always, wipe over the windshield with a clean microfiber cloth once you are done to remove any product.

Apply Glass Polisher to Your Car Windows

Quick detailer leaves behind a protective layer, which is great on paint but not your windscreen, so to get rid of anything left behind and remove any remaining dirt, we will be using some glass polish.

Apply your glass polish to a foam applicator pad, and then rub it across the windshield in an overlapping motion using a bit of pressure.

 Glass polish is also excellent for removing stubborn dirt and water spots and getting your glass exceptionally clean when used as a standalone product.

Wipe Away Leftover Glass Polish

Wipe off the glass polish once you are done. Obviously, you do not have to do all these steps every time you wash your car – just cleaning the windscreen during your normal washing session will be fine most of the time, and when you need a more thorough cleaning, you can just use some glass cleaner. However, a few times a year, and especially during winter, it is worth taking a bit more time to give your car glass a thorough, deep-cleaning session, as it will help to keep it cleaner for longer.

Apply Glass Sealant to Your Car Windows

The finishing touch is going to be some glass sealant. This will help to keep your windshield cleaner for longer and will cause water to bead and run off at speed, meaning you barely have to use your wipers, if at all, when it is raining. You only need to apply a few drops to your applicator pad.

Now using overlapping straight-line motions, apply the sealant to your windshield. You just need a nice even coating across the whole surface.

Wipe Away Leftover Glass Sealant from Your Windows

Wipe the haze off, and it is job done – your windshield is now sealed and ready to repel rain and dirt. Go ahead and apply glass sealant to the rest of your windows too, as it will help to keep them cleaner for longer as well.

Using Regular Glass Cleaner on Your Car Windows

Of course, just regular glass cleaner is excellent too and requires minimum effort. Just spray a bit on the glass, there is no need to go overboard with quantity. Now spread it over the glass and wipe it off, it is as easy as that.

Some of the tools to get spotless car glass is liquid glass cleaner, detailer solution, clay-bar, and a rag on top of a Corvette windshield

Finally

We have previously discussed how to remove scratches from car glass; so, if you still have marks on your classic car glass after a thorough spotless cleaning of your windows then further polishing may be required.

Do not forget the inside of your windows and especially your windshield.  Dirt builds up on the inside, too, so it is important to clean that off periodically as you would on the outside. Just a spray cleaner is perfectly fine here as the interior glass is not exposed to the elements.

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