I have two bedrooms over a one car garage. These two bedrooms are always noticeably warmer or cooler than the rest of the house so I would like to improve the insulation in the ceiling of the garage.

The garage ceiling is open (no sheet rock no drop ceiling) so I have easy access. Currently there is fiberglass insulation in place. The kind made for walls with kraft paper on one side. The kraft paper is facing the floor of the garage.

I am concerned about air infiltration. I have hardwood floors above which are installed over what looks like wood slats (not plywood). In any case there are lots of cracks that air could get through.

What is the best way to insulate this space. Should I put some sort of vapor barrier up?

Thanks for any help.

 

I would sheetrock or at the least panel the garage ceiling. This will help some. Unfortunatly if your garage is not a conditioned space like the rest of the house, you will still have these temperature changes in the rooms above.