[Superman]

I've been here a long time and have never seen a better glass-cleaning thread. The only thing I'd add is that something special is usually necessary to strip silicone. From paint or glass or whatever. It's hard to detect and will really mess up your plans if you try to work with paint without first making sure all silicone traces are gone. Anyway, the auto paint stores have stuff to strip silicone. Oxy-Clear.