I came across an article (http://www.voltscommissar.net/docs/84doubleglazing.pdf
) on how to do double glazing on windows (I also looked up secondary glazing). Would it be impractical to do this with bus windows? I love having all my windows to see out of/for sunlight but I worry about insulation since we will be full timing. If I could adapt it to bus windows I would have to do it inside on the bottom and outside on the tops so I could still open my windows. I'd also have to figure out screens. Anyway, anyone done this, heard of it, or have any ideas about it?