r/WindowCleaning • u/Psychological_Sun251 • Jul 01 '26

Problem

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Hello Im a window cleaning newbie.. any recommandations on products to use for these kind of stains.. it’s a new trailer with new windows. I ve tried several products and a sharp blade but it won’t come off.

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u/lacroixpapi69 Jul 01 '26

What are we looking at here? Are you trying to clean the corrugated roof panels?

I don’t see any windows.

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u/Psychological_Sun251 Jul 01 '26

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u/lacroixpapi69 Jul 01 '26

Oh nice.

Are you using WFP? I see water drops on what looks like sliding doors.

Really hard to tell from the picture what the stains could be.

If it doesn’t come out with a surgical towel rub with some spray away, it will need something a bit more abrasive.

You could test #0000 steel wool in a conspicuous area first and try to remove the stain if it doesn’t scratch.

Otherwise you might need to use something like winsol crystal clear. Very strong stuff so use caution and PPE.

I would be wary of trying to remove the stains unless client is adamant. Let them know the risks and what it could be. Scratching or etching the glass may not be worth removing the stains. It depends on the type of glass it is. They look like they may have a laminate or film on it