Quote:
Originally Posted by chev49
roof inside bus won't be hot if ya just put a 1/2 inch foil backed insulboard attached to inside roof of bus. 10 bucks a sheet.
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This sounds like a pretty good idea.
AS long as the roof doesn't leak, I don't think you'd have any problem just putting it up over the existing ceiling using Automotive Door Panel Fasteners:
https://www.summitracing.com/parts/rnb-45680
to hold it up ... no glue. With the benefit you could take it down pretty easy if a leak developed. Some duct tape could be used to fill seams.
It might be pretty efficient too, given the air gap between the ceiling and the roof.
I think the real problem might be making it attractive.