I am thinking of making some insulating panels wrapped in fabric which I can mount between the joists of a glass roof extension just with velcro or pegs or plastic strips or something, so exposed to the inside of the house. Maybe polystyrene plus a thin foil layer, maybe just polyeurethane - Celotex type material, maybe something else like mineral fibre between sheets of hardboard. should I worry about odours? does celotex smell? and should I worry about fire resistance?. Is there any reason why these materials can't be used uncovered by plasterboard?
tim W
If you want more detail - a glass roofed extension is too hot and way too bright in Summer and a bit chilly in winter. Glass panels (something like 6mm, 20mm, 6mm with coatings)sit on painted joists about 150 x 40 at 850 centres. Have been thinking about blinds, stuffed fabric things, elastic and pulleys but I think the cheap, simple and effective method might be to cut foam panels, cover them with fabric sit them between the joists on L section plastic or aluminium strips. they might need to be brought down for cleaning but I suspect once they are in place they will stay in place Summer and Winter reducing the glass area and insulating.