i have situation where a window washer has used steelwool to clean glass. they inform me that a fine steelwool is the industry standard for cleaning glass. these windows in question were being cleaned for the first time since they were installed, so they were fairly dirty and had some residue (sp)from a year long construction project. At close inspection we have found quite a few fine scratches. the window washer denies he is responsible. if the glass has to be replaced it could run a $100k. the glass washer cost $1880.00 and his insurance is worthless. SEND HELP and answers.
If your scratcged galss is ONLY tempered (Toughened) glass, you might have a glass defect.
Check out www.StopScratchedGlass.com
Look under "The Challenge", then click "Quality Glass."
If you think I might be right and need more help, contact me at 1-800-542-2724 Ext. 201.
Bill Miller
G'day....We use steel wool to removed white paint pen markings from our glass before toughening... we dont get scratching warranties... maybe it was the residue that you mentioned...dirt and grim can create fine scratching....so i think the window cleaner was correct...but hey i might be wrong,i only doing it every day....