This is a pic of the damage. Its believed to be a vinyl decal on a sheet of sheetrock and then a urethane finish over top. Water laid on it and caused this stain.
Strip and refinish or write it off.
Or any other way to repair it.
If stripping, what to use?
Strip and refinish or write it off.
Or any other way to repair it.
If stripping, what to use?