Hi again, I?ve got a garage that comes in under the north west corner of the house. Above the garage are 2 bedrooms. The garage is unheated. You can exit the garage directly into the basement of the house. The basement is unfinished and the joists are open. Upon looking down the run of the joists over the garage you can see that they are un insulated. See the image Joists.jpg at?
My question is what is the best way to insulate this area? There are about 10 runs like this, about 10 feet deep each of them. I was thinking rigid insulation? Is a vapor barier needed in this case? Any opinion is welcome.
Thanks john