Table r402 4 1 1 air barrier and insulation installation floors.
Insulate floor over garage.
Check it out for more details and specific recommendations.
I wrote a big article discussing whether you should insulate your garage.
Insulating the attic above the garage will help keep temperatures in the garage a bit more stable but it won t have any appreciable effect on energy bills.
Floor above a garage smaller room over a large garage.
Insulation in floors including above garage and cantilevered floors is installed to maintain permanent contact with underside of subfloor decking.
Insulate ducts and plumbing and put them close to the floor.
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.
Concrete is cold and hard but an insulated concrete slab can make a heated garage significantly warmer and more energy efficient.
When you should insulate the garage if your home s hvac system does extend into the garage then the attic above it should be insulated as it would for any other room of the house.
If you have a conditioned room over your garage it would be a good idea to insulate the garage ceiling if it s easily accessible.
A continuous air barrier is installed in the building envelope including rim joists and exposed edges of insulation.
The best way to insulate the finished room over the garage is going to be just like any other room in your house insulate the exterior walls the ceiling or attic and the floor.
Controlling moisture in a garage is done by using exterior grade plywood sheets laid over the foam insulating panels and also by laying down a sheet of polyethylene plastic as a vapor barrier to.
A floor with ducts also should be insulated with a continuous layer of thick rigid.
Insulate garage floors using rigid foam and plywood prior to applying finish flooring.
This is a smart first step before installing a new floor.
How to insulate a garage floor above a concrete slab.
What insulation to use in the garage.
This can be done through blown in insulation and unfaced or faced batt insulation.
But since it s a floor to the room insulating it won t have as much of an effect as the room s ceiling.