Removing Hard Water spots on the Windshield - F150online Forums



Removing Hard Water spots on the Windshield

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  #1  
Old 08-22-2005, 11:21 AM
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Removing Hard Water spots on the Windshield

What's the best way to remove hard water spots from a windshield?

I decided that, with all of the rain we've been having (AZ monsoon season) and the mud and road grime that got on it, it was time to clean'r up... It took forever and with the summer heat, the water dried up more quickly than I could wipe it off and now I have a windshield that looks like crap.

I tried vinegar and it helped a little, but it's still there and "I" notice it a lot. I used this Rain-X windshield foam stuff with the microfiber towel, and it helped a little more, but still there...

I thought about CLR, but I'm skeered to try it on my windshield.

Any help would be appreciated.
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Old 08-22-2005, 11:26 AM
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Clay bar it. It was the only thing that worked for me. I even tried #0000 grit steel wool with WD40 before I clay barred and it did not help.
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Old 08-22-2005, 12:06 PM
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I had a horrible bout with hard water a few weeks ago, washing my truck at my buddies house. If you drank enough of this water, you would probably crap an iron bar. I ended up rewashing it at a DIY drive thru, and used the pink foaming brush thing on all the glass. Took care of it.
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Old 08-22-2005, 01:04 PM
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There are OODLES of chemicals that can remove it... what you're seeing is scale from dissolved minerals in the water...

Here's what worked for me recently on a car I was doing for a client...

I couldn't remove them by any mechanical measure and really didn't want to resort to a highly abrasive polish to knock them down... I went in and got a spray bottle of CLR (Calcium Lime Rust) remover (green bottle). I sprayed it on a shop rag and wiped down the windows.

Follow with a quality glass cleaner and, presto. DO NOT get the CLR on ANYTHING other than the glass as it's highly acidic and can cause pitting and other problems on coated surfaces.... word to the wise... use at your own risk...

RP
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Old 08-22-2005, 10:22 PM
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hello,

If 0000 steel whool doesnt work with a glass cleaner then try watering your windshield and drying it with a microfiber towell or microsfiber glass whipes. Either of the two i have found works well.


Or Try this, 0000 steel whool with clearvue auto glass cleaner, rub on with the steel whool, then dry with a microfiber towell.

Let me know if you try this and how it works our for you.
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