'Hard' Water Spots on Fiberglass

ShineTimeDetail

ShineTimeDetail

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I recently did a RV that had super hard water spots on it. A wool pad on Menzerna power gloss at 2500 RPM was hardly doing anything. I got a majority of them completely off but along the windows, doors and trim they are still really bad. Me getting in there by hand isn't going to work...Honestly I'm not willing to do it. I say I'm not willing to do it because I have already tried it and it takes a very long time and a lot of energy to do a very very small amount.

Is there something I can use to take it off? Someone was telling me to use water spot remover that is used for glass but it has acid in it! I just laughed and shook my head.

Thanks for any help! :xyxthumbs:
 
Water Spot remover is the chemical of choice here. after 20yrs in the Boat And RV appearance restoration business that is what we use!

You need to make a choice here as to work Smarter or Harder!
 
I used clr or my camper and it worked good. I havent used it on a car though.
 
Rsurfer said:
Google MX7
Click to expand...
-Since MX7's %, by weight, of HF acid is optional...

-Couldn't the OP also take under consideration/(advisement):
Meg's D140 Wheel Brightener...
Whose %, by weight, of HF acid is controlled at 10-15%...

Bob
 
FUNX725 said:
-Since MX7's %, by weight, of HF acid is optional...

-Couldn't the OP also take under consideration/(advisement):
Meg's D140 Wheel Brightener...
Whose %, by weight, of HF acid is controlled at 10-15%...

Bob
Click to expand...

Could be..call me maybe.
 
In the future try spraying down the whole thing with ONR at QD dilution after rinsing it. I have extremely hard water and although there were water spots afterwards, they easily came right off when I was applying a spray wax with a microfiber towel. I have never had a car this water spot free until I have tried this.
 
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