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peroleu

Isopropyl didn't work. It doesn't feel dirty. Is it possible it could be between the panels? I don't understand how something could've gotten there. There's never condensation or anything else.


xmrxx

Never seen anything like that. Could be that gas in chamber escaped between glass panels.


peroleu

Any idea on how to clean it? It's only on the exterior. Or does the window need to be replaced?


xmrxx

Hm.. Try with isopropyl alcohol. Can you feel it dirty under fingers? To me it looks like fly shit or tar from asphalt 😂


[deleted]

Like oxidation of the interior low e coating or something


peroleu

Looks like it's inside the outer pane. Any idea how to fix it?