Removing Hard Water Spots

[72C10]

Anyone have any tips for removing old hard water spots on windshield and glass? They are outside the wiper track area and on side and rear windows.

I've tried a clay bar once and vinegar once but I couldn't tell a difference. My next step is going to be steel wool. I'm hopeful this will finally do the trick.

I have the windshield looking good except for this last little bit.

 

[Bud_One]

I've heard this works for water spots on glass.

 

[spasm3]

This is the glass safe Bon Ami.

 

[Luftmasse]

I use a Dual Action polisher to remove the water spots. Very efficient.

 

[benjy]

tried several suggested things BUT griots used to be called correcting creams prolly the med as i had all, names changed to protect the innnocent!! my truck was black!! a coating of collinite 915 afterwards + it looked GREAT!!!!

 

[Kestas]

I have a jar of cerium oxide just for this purpose. I've even had to polish stains from a newly installed replacement windshield.

 

[Soft Cars]

Bon ami, steel wool, and a little bit of water. Poor man's DA polisher.

 

[Marcozi]

Vinegar

 

[loneryder]

What about water spot remover??

 

[lschultz]

Anyone have any tips for removing old hard water spots on windshield and glass? They are outside the wiper track area and on side and rear windows.

I've tried a clay bar once and vinegar once but I couldn't tell a difference. My next step is going to be steel wool. I'm hopeful this will finally do the trick.

I have the windshield looking good except for this last little bit.

This works for me 4oz distilled water 4oz of distilled white vinegar in a spray bottle. We live in country and the water spots are bad and with all this heat much bad. When I wash my truck then pull it into my shop I have to go over it with the spray bottle of vinegar/water to get the spots off before I use detail spray on it. There might be some use have to rub more but they come off.

 

[vavavroom]

This is the glass safe Bon Ami.
View attachment 168065

This version was discontinued in 2022. Is the new version safe on glass?

 

[SHOZ]

You can get a cleaning grade vinegar that is about 30%. Warm it up to 90-100F and it will remove iron and hard mineral spots really well. If that doesn't work add some 3% hydrogen peroxide to it too. Acetic acid is one of the few acids that works on lead FWIW.

 

[dubber09]

Water/vinegar/Dawn mix.

 

[hrv]

CeriGlass works great....

 

[spasm3]

This version was discontinued in 2022. Is the new version safe on glass?

Im not sure it is. I still have some of the OG mix.

 

[vpr5703]

Second vote for Cerium Oxide. Follow the directions real well and make sure to keep it wet. Works great.

I have a jar of cerium oxide just for this purpose. I've even had to polish stains from a newly installed replacement windshield.

 

[vavavroom]

Second vote for Cerium Oxide. Follow the directions real well and make sure to keep it wet. Works great.

That reminds me of when I ground snd polished glass to make a mirror for a telescope in high school. I must have the polishing compounds and at least one of the mirror blanks somewhere. Will look for these things tonight.

 

[UncleDave]

Bar keepers friend also works on glass.