Sealing garage below bonus room
I’m not sure which category this should go in, but here goes nothing. To finish out a bonus room over a gabled garage, a room that has knee walls, what are the requirements for sealing the room from the garage both from an exhaust fume perspective and insulation? Is making sure the sheetrock seams are taped up and all holes for lights/outlets in the garage ceiling are filled with spray foam good enough for the exhaust fumes? For the insulation, would it work to put rigid foam, sealed with spray foam, at the end of each floor rafter under the knew wall? The current knee wall, on the uninsulated side, has thin foil poly structural panels that are stapled into the studs. For this, do I need to tape off the seams and the ends? Are these panels okay for the job?
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