The Roof Cleaning Institute Of America Training & Certification Forum
"Find A Certified Roof Cleaner Directory"

I have never cleaned stained glass but I put Ammonyx Lo in my house & roof wash mix and it makes the windows shine after it is rinsed off with a liberal dose of water.

Jon,

Okay, I assume you are just concerned with a little over-spray getting on the stained glass windows.

I just put some patina on some new lead came and soaked it in straight 15%. I also soaked a piece of old came that had patina ed naturally. There was no change of color in any of it.....new, applied patina, or natural patina.

There was no damage to the came either. The one thing I was concerned about was the window glazing. To make stained glass waterproof and air tight we have to apply....actually force, window glazing between every inch of glass and the came. Talk about a pain in the you know what.

This glazing is subject to drying and cracking over time like any other window glazing. I actually pressed some glassing into the channel of the came I put in the 15%. There was no immediate effect on the glazing either.

I think if you gently wet the stained glass before you get any over-spray on it and gently rinse it afterwards, then you should be okay. Just remember how fragile stained glass is and that the glazing may be dried and cracked which would let water come through. You wouldn't want to get blamed for something that is fault of old glazing.

I am glad someone CAME through for you.