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How to Clean Inside of Windshield

Removing the dirt on the outside of your car windshield can be as simple as driving the car through a car wash or giving it a thorough manual-wash, but what do you do when grime and grease on the inside of the windshield start distorting the view of the road ahead and around you? Well this article will hopefully teach you exactly how to clean inside of the windshield!

How to Clean Inside of Windshield

The car windshield is one feature that most drivers don’t even notice until a scratch or smear appears on the glass, either from a worn-out wiper blade, bird droppings, trapped leaves, or finger smudge. But, it’s an important safety feature and should be kept as clear as humanly possible to provide a good view of the road that’s free of distractions, thereby reducing the likelihood of a car accident.

In this article, we will cover everything you need to know concerning how to easily clean the inside of your windshield for better visibility while driving during any time of the day. Before we dive into how to clean the inside of your car windshield, let’s first figure out what contributes the most to making it dirty in the first place, so we can reduce or eliminate some of these culprits. Here are some of the common reasons:

Why does the inside of my windshield get so gross?

There are lots of reasons the interior of your windshield may take on a hazy, streaked appearance over time, despite your best efforts to keep it clean. Here are some of the common causes of the dirty windshield:

Very fine particles in the air.

If you are a smoker, then most of the fine film on the inside of the windshield may come from tobacco smoke. Even if you do not smoke, but drive in a dusty or humid environment, pollutants inside and outside your vehicle will find a way to the windshield, dashboard, and other surfaces in the car. Once you roll down your car windows while driving, you’re basically giving an open invitation to foreign substances to come in and settle on the car interiors including the windshield.

Human and pet factor

Another reason your windshield gets gross and dirty could be from finger smears, pet noses and paws coming in contact with the glass. When you sneeze, cough, or even while you are breathing in the car, most of the liquid your body releases into the air ends up sticking to the inside of the windshield, especially in the cold and wet season.

Chemicals

The primary reason behind buildup on the inside of the windshield can be traced back to car off-gassing. Starting with the ‘new car smell’, oils and chemicals in car detailing products, and the gases are given off when various plastic and vinyl interior components start to break down. The gases and residual chemicals from these materials become trapped within the car and end up making an oily film on the inside of the windshield, especially in hot, humid weather. Sometimes you might notice a smear on the windshield if you don’t handle the leftover glue from a sticker properly.

What you’ll need to clean the inside of your car windshield

Before attempting to fix the grime and smear on the interior of the windshield, you’ll need to clean the exterior of the windshield first so you can easily spot the problematic areas. Let’s take a quick look!

Lint-free microfiber towel

If you want to get the best solution for your dirty windshield, then you should avoid using anything other than a microfiber towel on your windshield. Microfiber towels are good at eliminating ugly streaks that will definitely appear if you use a paper towel or any kind of cloth to wipe the glass. Just ensure that you choose a microfiber towel that is tightly woven and made from high-quality materials that are very absorbent.

Glass cleaning solution

You will need to pick a glass cleaner that is specifically designed for cleaning the car windshield and one that does not contain harmful or oily chemicals that might cause more harm than good.

If a glass cleaner is not easily accessible, you can make your cleaning solution with the following

  • Rubbing alcohol
  • Vinegar
  • Water

You can either mix 70% of water and alcohol with a generous amount of window cleaner, or you can use 50% of both alcohol and water, then add a capful of white vinegar.

Just make sure that you are not using an ammonia-based cleaner to wipe the inside of the windshield because it can damage the car’s seat, dashboard, and other interior components if it drops on them.

Cleaning the Inside of Windshield

When you’ve gathered all the necessary equipment, begin the cleaning process by giving the exterior of the windshield a thorough wash, then wipe off the excess water with a microfiber towel.

You do not have to use circular motion here, in fact, cleaning it vertically and horizontally will help you differentiate dirt streaks on the outside and those on the inside of the windshield. Once you are done with that, it is time to clean the inside of the windshield.

Wipe the dirt away from the inside of the windshield

Wipe off any dirt on the inside of the windshield with a clean microfiber towel. Depending on which arm is more dominant, you can either wipe the entire glass from the driver’s side to the passenger’s side or vice versa, but make sure to reach in and clean the area of the glass closest to the dashboard so dirt and grime do not accumulate here and to create an ugly sight. If you need to use a reaching-tool for this area, then do so without scratching the glass.

Removing the grease

Once the inside of the windshield is clean, it’s time to work on the stubborn stains and grease on the glass. One of the best tools for this is the magic eraser. It is actually a kitchen scrubber that breaks down and removes oil, grease, and any stubborn stain that could not be removed with the microfiber towel.

To use it, you simply dip the kitchen scrubber in warm water and wring it a bit so it is damp and not dripping wet, then wipe the surface with a circular motion. Follow up with vertical movement and ensure that you do not let any liquid drop onto the dashboard. You can use a new paper or some scrap paper to protect the dash. If you accidentally drop some on the dashboard, then you have to clean it off immediately with a wet rag to prevent discoloration.

After cleaning, manually wipe off any liquid using a towel. If the weather is too warm and the liquid keeps drying off alone, you should either look for a cooler place or postpone cleaning the glass to the early hours of the next day.

Applying Glass Cleaner

After cleaning with the magic eraser, the next step is to use the glass cleaning solution you made or bought.

Spray or dip another microfiber towel in the glass cleaner, allow the microfiber towel to absorb the liquid, then, with circular motions, start wiping the windshield with the towel. Finish it off with vertical and horizontal motion.

Tips on how to clean the inside of a windshield successfully

  • Avoid spraying any cleaning solution directly on the glass. Instead of removing the gunk from the windshield, this will just cause streaks, smeared patches to appear, and you’ll end up just moving the gunk around instead of removing it.
  • It is very important to allow the windshield to dry up after each step. Even if you’re using glass cleaners specifically formulated for vehicle windshield, the lingering residue can damage your windshield.
  • Resist the temptation to reach for an old towel, it’s likely that you’ll introduce a new gunk or scratch the glass if it was a towel you use for washing the exterior of the car.
  • If you complete the cleaning process and you still notice glares on your windshield that will not budge no matter how much you scrub, the problem might be on the exterior of the windshield not on the inside. Work on the outside with the same procedures outlined above.
  • Remember to wash your car correctly. Start with the body, then the glass, before finishing off with the tires so you don’t scratch your paintwork and glass with tiny sand particles.
  • Whether you’re wiping the windshield or washing the car, always do so in the shade or in the early hours of the day to prevent rapid evaporation of cleaning liquid. Avoid parking under a tree so you don’t get tree sap on your car.
  • Whenever possible, protect your car from direct sunlight by parking in a cool shade/sheltered location, such as your garage. You can also reduce the amount of off-gassing and buildup of contaminants that settle on the windshield by cracking open a window to let some fresh air in. Only do this in a secure place, so someone doesn’t gain access to your car without using the key.

How often should you clean the inside of your windshield?

When it comes to keeping your windshield clean and clear, there’s no universal number on how often you should wash it. If you regularly take snacks inside the car, roll the window down when driving, or frequently travel through dusty or polluted environments, then you have to clean it as often as you can. However, there’s no upper or time limit. If you think it is affecting your vision, then you should clean it before it causes bigger problems.

What about wipers?

Another important component of a car that needs good care is the windshield wipers. Inspect the wipers at least once a month. If the rubber feels hard, or they begin to rub or squeak when clearing the windshield, then they can scratch the glass.

Make sure to replace your wiper blades as soon as you notice this since they are no longer effective at cleaning the windshield. Ideally, you can replace them before they get to this stage.

Also make sure that the wipers do not run when the windshield is dry, you could end up doing more harm than good if hard debris gets trapped between the wiper blade and the windshield.

Final Thoughts

The steps outlined above are perfect for maintaining or improving the visibility of your windshield. Irrespective of the methods or the cleaning solution you choose to use, the important thing is keeping the windshield clear of distracting smear and streaks. Failure to do so might result in unexpected consequences.