How do I insulate a room with a concrete floor and concrete roof?
This room is used year round. The room has a garage underneath the floor. The ceiling is also the roof which only has a rubber sheeted on the outside. We live in Pittsburgh which is very cold for a good 4-6 months of the year with snow, and reasonable amount of rain in the season.
The height of the room is only 7.5 ft. So interior clearance for insulation is at a premium. Can we insulate from the outside on the roof and subfloor?
The walls are made of concrete block with firring strip, rigid foam, and drywall. I suspect it was a garage once.
Thanks for your help.
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