Cleaning Glass From Antique Stain Glass Windows

by Janet
(Colorado Springs)

I recently had a request from a lady in PA. Her husband bought an old church years ago. What was left of the last stained glass window recently fell apart. She sent me the pieces so that I could make something new with it as a surprise for her husband. The glass, especially the side that was apparently outside, has dirt and grime that I have been unable to scrub off. Do you know of any special cleaner or solution that might help?
....Thanks

Milly's reply:
Wow, this makes me wonder what's in the air to make them this dirty! A bit basic, but have you tried soaking the glass in water and detergent for a few hours before trying the scrubbing?
If that still doesn't work, I always use isopropyl - rubbing alcohol - to clean my glass, although I have to say I haven't been faced with antique stain glass windows like these before! You can always mix it with vinegar - a cup of isopropyl, a cup of water and a tbsp of vinegar - but I think using it neat in this circumstance would be more effective. Use in a well ventilated space as directed by manufacturers.
I'd be interested to see what new stain glass window emerges from these fragments...