What is this?


#1

final cleaning on these doors and it’s the only thing I cannot get off. Tried magic eraser, steel wool, mop and squeegee, isopropyl alcohol. Weird is that it looks like soap runs but sideways.


#2


#3

Interior single pane? Tempered? Who is the mfg? Maybe be cleaning company etch if they are using cleaners with fluorides…


#4

What are these used for? Are they moved? That might help. Like hockey glass is moved and stacked a lot.


#5

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.


#6

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.


#7

before shot of sideways stains


#8

Geez…did they forget to clean the inside of that glass before glazing it??? Sheesj


#9

Yeah is that a defect in between the panes?