Looking to warm up my garage a little, maybe eventually add a heater but I know insulation is step 1. Have 1 exterior wall that’s not insulated or drywalled. Also have pull down steps with storage above. Roof has a ridge vent, no mushroom vents. As far as the ceiling, should i cover the entire “floor” of the attic with plywood, and stick the insulation on that from the bottom or do I have to insulate right against the roof? Now the it’s about 60% plywood, rest is open as you see in photos.
- I’m assuming fiberglass bats would be the way to go but faced or unfaced ?
- What R value( in WI)?
- Do i need plastic vapor barrier over everything after?
- is it necessary to drywall the wall after insulating?
thanks so much for any help