Water spots - sunroof

[richmondguy]

I have water spots on the outside of the sunroof (I suspect maybe hard water deposits). What's the best way to remove these water spots w/o damaging the glass? I tried a degreaser; windex; 409; and hi-end glass cleaner. No success so far.

[Weasel]

I think most if not all sunroof glass gets bad water spots like that simply because it is horizontal and water dries on it like that. Maybe try some bathroom cleaners that get water spots from shower door glass, or a polish. Then a good coat of wax on the glass once spots removed to help protect from future spots wouldn't be a bad idea.

[Thunder22]

Isopropyl alcohol

and if that doesn't work

Clay bar.

[richmondguy]

My wife suggested scrubbing bubbles bathroom cleaner this morning. It worked great.

[xriderob]

CLR would do the trick, it works on our work vehicles that are constantly bombarded with hard water deposits and not dried/windex every time.

[Yii]

about CLR, would that damage paint or plastic moldings?

[Penguin]

Originally Posted by xriderob

CLR would do the trick, it works on our work vehicles that are constantly bombarded with hard water deposits and not dried/windex every time.

CLR will likely work the best, but since it is an acid, I would:

(a) use a rag dampened with it, so none runs onto the paint or trim, and

(b) do it just before I washed the vehicle, using a lot of water to ensure it is all rinsed away.

While it would involve more "scrubbing" work, vinegar would also probably work well, with less risk.

[Thunder22]

You don't need to use any of those chemicals that might do damage, rubbing alcohol will take them off, then just wax the area.

[MnRiverman]

A clay bar works great.

[FSETH]

Originally Posted by Thunder22

You don't need to use any of those chemicals that might do damage, rubbing alcohol will take them off, then just wax the area.

It worked wonders for getting sap off my X.