Insulate Garage Roof Below Bedroom

If your ceiling is unfinished you can do this from below before attaching drywall to the undersides of the joists.

Insulate garage roof below bedroom.

Something to look into would be dense packing cellulose. This heated plenum ensures that rooms above the garage stay warm. Since you re trying to control the bedroom and the insulation will fall to the ceiling of the garage look into air ceiling the crawl space so that air cannot penetrate from the outside. The picture below shows the garage and the dormer window of the 4th bedroom.

One of the easiest ways to insulate the ceiling of your garage is to infill between the joists with batts of fiberglass or rock wool insulation. You can insulate the walls ceiling and door of the garage to the highest r value possible but if you fail to fill those air gaps you ll still be wasting a lot of heat. Insulated garage doors typical only add about an r 3 5 insulation barely enough to make a noticeable difference. If someone spends a lot of time in the garage insulating it may improve their comfort even if it doesn t lower any bills.

I don t mind spending a few hundred pounds insulating the garage ceiling if it will make a comfort difference. There are no windows the joists are 9 tall and i am in massachusetts. I know heat rises but i think the bedroom must be losing a fair bit of heat into the cold garage below. So before insulating go around the garage with a can of low expanding spray foam and seal all gaps and cracks that let in the daylight.

We use r40 batt insulation with a sealed poly air barrier but then we also run the heating ducts into the cavity above the insulation and below the floor. Hi everyone i have a split ranch with a 2 car garage under the bedrooms. To insulate the floor of the room above the garage seal the space between the floor of the room and the ceiling of the garage and the top plate and the header joist with insulation. The back wall of the garage is completely below grade the left wall is half below grade slope the right wall connects to the 1st floor and the front wall has two 8x7 insulated doors.

Homeowners also should insulate a garage completely including in the attic above it if they plan on turning the garage into another air conditioned room.