Insulating Attic Above Unheated Garage

Summer turns them into sweltering ovens.

Insulating attic above unheated 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. There is a school of that maintains that an unheated garage that is attached to the house may get some benefit from insulating the walls and ceilings of the garage since it theoretically offers an additional thermal buffer between the exterior of the home and the outdoors. Insulating the area in the attic over a garage might keep the temperature a little more stable in the garage but it does little to reduce the amount of energy needed to heat and cool your house so it s not a good investment of your energy dollars. Part 1 of an instructional video for the right way to insulate sidewalls and unheat.

On a cool day that might be fine but during the middle of the summer in arizona where temperatures are near 120 degrees or above those small cracks can turn into jet streams of hot. Adding insulation to a garage will help moderate temperature extremes particularly if the garage space is attached to a house. The garage door typically has gaps and small cracks where air can get through easily. Your garage door is just as important to insulate as garage attic insulation.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. For diy attic insulation you ve got two choices. Insulating an attached garage may. 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.

Garages are typically unheated and uninsulated. If you re using your garage enough to warrant installing a heater and or air conditioner by all means you should insulate the ceiling between the garage and an unfinished attic space above. Loose fill or batt the common term for blanket insulation. Both can be added to uninsulated attics or layered over existing material.