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Tasha asked: How do I remove hard water spots from my car windows? I have used Windex, water/alcohol mixture, lemon water, Magic Eraser, Goof Off and many more cleaners. I cannot get rid of what appears to be hard water spots on the outside windows. It is so aggravating, and I wondered if you had any ideas for me. Thank you!
Sprinklers, 
along with other water that your car is exposed to, can leave spots on the glass and other surfaces. While these spots are not permanent, they may not be easily removed with regular glass cleaners. Here are a few products that will remove the spots and clean your windows as well.
You Will Need:
- Pick one:
- Equal parts white vinegar and water
- Spot-X
- Stoner’s Invisible Glass
- Soft cloth (microfiber cloths work well)
Steps to Remove the Water Spots:
- Begin by cleaning the glass as normal. Remove any residue or dirt from the surface.
- Spray a cloth with your chosen cleaner. It is important to spray the cloth rather than the window to avoid excess cleaner getting on other surfaces besides the window. (For example, if using the white vinegar and water mix, that can remove any wax on the car.)
- Wipe the window with the damp cloth.
- Rub in small, circular motions until the water spots are removed. It may help to let the cleaner soak on the surface for a few minutes.
- Wipe the surface clean with a soft cloth.
- Repeat if necessary.
- Clean the windows regularly to keep the water spots at a minimum. Consistent removal will ensure the desired results.
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Additional Tips and Advice
- Use regular household cleaning products with caution. Some of them contain chemicals that can damage the color or protective finishes on the car.
- These same products often work well for cleaning showers and other areas with hard water stains. Check the label to ensure it is safe to use on your chosen surface.
- Never use any abrasive scrubbers on the surfaces of your windows. They will create small scratches and leave a dulled appearance.
- Some water spots cannot be removed because they become etched into the glass and paint. It requires polishing and removing the etching from the surface. A detail shop can complete this, but it can be pricey.
- If the spots are new, some have found Scotchbrite pads scrub them right off. However, they can be abrasive, so use them with caution.
- Park your car away from sprinklers, especially on hot, sunny days. The mixture of the water droplets and the heat of the sun results in the stubborn spots.
Use vinegar and newspaper…fill a spray bottle with white vinegar and spray the glass, then wipe the wetted glass dry with crumpled newspaper; the glass will sparkle.
I used vinegar directly, but it’s of no use. Those tiny circles are not going away.
I tried lemon, vinegar, and C.L.R. (spray on calcium, lime and rust remover). None of them worked. I had a small tin of paste-type rubbing compound. I placed a small dab on an applicator and buffed by hand. The spots were almost removed completely. I had a small buffing wheel that I put into my drill and used the rubbing compound to completely remove the hard water stains that had etched into the glass. It took about 30 minutes to complete the back window. It looks brand new!
Thank you Ivan; I think your solution will work for my windows too. Will try soon. Thank you.
So it’s ‘Break out the Ol’ fashion “elbow grease”,’ huh??!! What was that lesson Mr. Meaggi taught Danial Son in “Karate Kid”… Wax on; Wax off…Wax on Wax off…on & on ’til ya get it done!
I am having a similar problem and I think I discovered partly where my issue is coming from. I bought these shammys at the car wash to dry my car, and I went to wash one then squeezed the water and soapy stuff was coming out. I did this about 10 times and still soapy stuff was coming out, so no wonder why my car had spots on it after I dried it previously. I use my own shammy now, but it’s annoying when you wash your car and dry it and it looks there are still dust spots on the windows. I think the only solution is the car paint polish or rubbing compound idea; guess it’s time to get a buffing pad as I already own a drill. This is slightly annoying, but I hope there is no long-term paint damage.
I used the vinegar and wash cloth today, and I still have water spot stains.
Haven’t tried it, but a friend said he uses straight white vinegar and it cuts right through the stains. His windows looked pretty clear.
Tried all the home remedies with nil success. Then, I tried a car paint cleaning polish with a medium buffing pad attached to a drill on LOW speed. After a little bit of going back and forth and a wipe down, the glass was near to perfect.
I used a new single-edge razor blade (never use a used blade as it will scratch the glass). It works well on slate windows for water spots and minerals.
Try using a fine steel washing scouring pad with dish washing paste.
Use the dish washing paste with a bit of water and apply it to the surrounding the affected area.
Then, use the very, very fine metal scouring pad with the dish washing paste and rub the said area.
All the rainwater spots will be removed without any damage to your windscreen surface.
After that, wash with water as normal.
CAUTION!!
(Make sure you use the very, very FINE metal scouring pad.)
Good Luck.
I use Stoner’s Invisible Glass exclusively to clean my car windows, and I’ve always continued to have water spots on my windshield (in the areas where windshield wipers do not reach.) I still have these spots after using Invisible Glass in the problem areas.
I got the spots after using Turtle Car Wash. I have tried everything, but nothing I do will get the spots off. They are tiny little circles similar to rain drops. Driving me crazy.
“0000” stainless steel pads. Keep the surface wet. I usually use my car wash and wax after for water beading and to protect the glass better. Works great for outside windows also. The wash and wax cleans and it beads the water off the glass, along with protecting the surrounding surfaces. Harsh chemicals dries everything out. It’s epic.