Polishing stains from glass

Submitted: Friday, Feb 20, 2009 at 22:40
ThreadID: 66152 Views:1683 Replies:8 FollowUps:2
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Broke a side rear slide window in the 80 series and have a second hand replacement.

My problem is that the glass has obviously been out in the weather for a while and there are water marks which seem to be etched into the glass. Probably been exposed to the salt elements as I think they came from somewhere on the coast from Queensland.

Any ideas how to remove them and get that nice new look or am I wasting my time? I need to secure the vehicle and it is a PITA to have to change them again at a later date, so would like to fix what I have just bought.

Thanks for your ideas in advance
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Reply By: Roughasguts - Friday, Feb 20, 2009 at 22:44

Friday, Feb 20, 2009 at 22:44
Try C.L.R it's probably calcium builup.
AnswerID: 350169

Reply By: landed eagle - Saturday, Feb 21, 2009 at 06:38

Saturday, Feb 21, 2009 at 06:38
CLR might work. If not try a VERY mild abrasive ,brasso,silvo, cut and polish,even toothpaste can remove stains and faint rub marks from the surface of glass.Go easy with the rubbing and take your time.
Only use this method on side windows. Polishing out marks on the front one can produce a mild lens effect which poses problems when headlights are coming towards you.

Glass that is left to the elements can develop a water stain that no amount of rubbing will remove. This mainly happens when whole crates of window glass are left out in the weather without protection, but can occur on vehicle glass too.

I make kiln-formed glass work for a living,most of it has to go through a toughening process for use in houses. This process adds subtle scuff marks,almost like a stain, to the smooth side. I use cut and polish for the majority of them and it works fine.
AnswerID: 350181

Follow Up By: Dave(NSW) - Saturday, Feb 21, 2009 at 12:50

Saturday, Feb 21, 2009 at 12:50
Could also try talcum powder, That's what they use to polish the fibre glass hulls of the racing yachts.
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Reply By: Rockape - Saturday, Feb 21, 2009 at 07:30

Saturday, Feb 21, 2009 at 07:30
Rust converter or vinegar should get rid of the stains and liquid jiff will get rid of anything else, just don't use a scouring pad.

Have a good one
AnswerID: 350184

Reply By: Member - John T (Tamworth NSW) - Saturday, Feb 21, 2009 at 10:47

Saturday, Feb 21, 2009 at 10:47
G'day david

I had some water marks in the side window of my Nissan and when I asked the window tint place who redid a rear window what to use they gave me a small bottle of "jewellers rouge" - lapidists ? (rock polishers) use it for a final polish. It took a bit of rubbing but all water marks gone.

Good luck with it

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AnswerID: 350218

Reply By: Member - lyndon K (SA) - Saturday, Feb 21, 2009 at 17:33

Saturday, Feb 21, 2009 at 17:33
Enjo glass cloth, yes they do work :)
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AnswerID: 350270

Reply By: Outnabout David (SA) - Sunday, Feb 22, 2009 at 08:15

Sunday, Feb 22, 2009 at 08:15
Tried every product I could find. Geez didn't know we had collected so much different products that seem to do the same thing.

Tried the lot from coffee machine descaler, all the household products you could think of, toothepaste, wet fine ash etc etc.

The only thing that worked was 2,000 grit wet and dry sand paper using CLR as the wetting agent. Still some very faint marks but acceptable.
AnswerID: 350346

Reply By: wicket - Sunday, Feb 22, 2009 at 17:48

Sunday, Feb 22, 2009 at 17:48
Give Gumption a shot
AnswerID: 350441

Follow Up By: Outnabout David (SA) - Sunday, Feb 22, 2009 at 19:38

Sunday, Feb 22, 2009 at 19:38
Tried that but no good
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Reply By: MrBitchi (QLD) - Sunday, Feb 22, 2009 at 18:35

Sunday, Feb 22, 2009 at 18:35
Novus is supposed to be good stuff.
AnswerID: 350453

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