just gutted the garage and basement, doing the usual epoxied floors and painted walls. new lighting and storage and whatnot.
the garage ceiling is uninsulated and the cold come right up through the hardwood floors in the dinig room.
originally i was going to knock out the plaster ceiling and add rolled fiberglass. looking at local codes, i would then have to drywall over that insulation. i hate drywalling, and dont care if the ceiling is finished or not, it's a small 1-car garage that i rarely put a car in.
what i was thinking of doing was just adding some 1/2" thick foam insulation sheeting to the ceiling and the 1 exterior wall. there shouldnt be a problem doing this, correct?