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.
Garage attic insulation r value.
Achieving greater r values in exterior walls.
It s also important to realize the value of air sealing in conjunction with insulation.
As you can see there s some variation in r value depending on the particular type and brand of products used.
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.
Paint gas oil cleaning products pesticides and other chemicals are stored on garage shelves right next to the living spaces inside of your home.
This adds insulation to the garage door without impeding its functionality.
Add insulation to attic.
If it isn t at least 19 inches deep add more.
A contractor will come and open up a hole in the wall pump in a cellulose insulating material and then patch up the opening.
Check rim joists and unfinished basement walls and compare depth with an r value map and chart for your area.
Slide a yardstick or tape measure into the existing insulation.
Things to consider when insulating your garage.
The other option is purchasing a pre insulated garage door that may have a higher r value.
You can achieve better thermal performance in your attic by adding an additional layer of 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.
Garages typically aren t built to be airtight and have lots of air gaps to the outdoors.
If you already have drywall installed around your garage but don t have it insulated then blown in insulation may be the answer.
This will serve the same function of keeping hot or cold air inside the garage as it does for the rest of the house.
Recommended insulation levels for retrofitting existing wood framed buildings.
Most garages are a refuge for all kinds of flammable and noxious stuff.
When you should insulate the garage.
Most garage door insulation has an r value of between r 8 and r 12 because it is so thin to fit the space.
Existing 3 4 inches of insulation.