Tuesday, February 26, 2019

How to remove frost from windshield using 3 methods

Frost is when white ice crystals deposit on a surface (in this case windshield). This happens when the temperatures falls below freezing and rain or snow freezes on the car. It's dangerous to drive a car with frost on the windshield as visibility is impaired. To remove fog from windshield read there is an article on that. Here we look at how to remove frost from windshield and how to prevent it from building up.


1. Start the car and leave it to idle

This raises the engine temperature, providing the necessary heat that will be needed in the next stage.

2. Turn on defrosting setting

With the engine now warm, the defrosting setting allows heat to be directed to the windshield. This allows the windshield to warm up, thus helping melt the snow. You may have to leave the car idling for 10-15 minutes.

3.1 Use saltwater solution

It's best to use road salt. Salt lowers the freezing point of water hence causes the frost to melt. Make a solution with the salt and apply it to the windscreen.

3.2 Use a solution of alcohol and water

Again this has a similar effect as salt water. Use rubbing alcohol and dilute 2 parts alcohol with 1 part water . Put the solution in a spray bottle and apply to the windshield. This also promotes the frost to melt.

3.3 You can also buy de-icer solutions

These are readily available in auto-shops and have far more superior effects than the above home-made solutions.

4. Remove the residue

Use a squeegee to remove the residue. Anything with a flat non-abrasive surface can do. Some even use an old credit card.

Consider buying an ice scraper to keep in the car so that you remove any snow that may accumulate on the windscreen. This makes it easier to remove frost from windshield.


  •  Before you start the car, make sure the tailpipe is not blocked by snow, else you get carbon monoxide poisoning

  • Don't pour hot or cold water on the windscreen. The rapid changes in temperatures may cause the windshield to crack

  • Don't put too much salt water on the windshield it may damage it in the long run

  • Using vinegar may cause corrosion of exposed metals and accelerate rusting


Prevention is always better so use the simple techniques below to avoid painful mornings as you try to get rid of frost:

1. Cover the windshield overnight with a sheet soaked in saltwater. Remove it in in the morning and store in a plastic bag/container ensuring it's always soaked. You can reuse it several times.

2. Use highly effective commercial anti-frost sprays which you can buy from an auto-shop

3. Spray a solution, made up of 3 parts white vinegar and 1 part water, on the windshield every night.

With the above information you can beat the frost every winter and be able to remove frost from windshield easily.

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