Interior single pane? Tempered? Who is the mfg? Maybe be cleaning company etch if they are using cleaners with fluorides…
What are these used for? Are they moved? That might help. Like hockey glass is moved and stacked a lot.
Tempered glass. Storefront doors. These were installed within the past few days. I took some before shots and these sideways stains were there before I began.
These are doors. Big glass doors. This is only showing on these doors and not the big windows I did last week for this high end clothing store.
Geez…did they forget to clean the inside of that glass before glazing it??? Sheesj
Yeah is that a defect in between the panes?