Garage Attic Insulation R Value

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.

Garage attic insulation r value.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. A contractor will come and open up a hole in the wall pump in a cellulose insulating material and then patch up the opening. Existing 3 4 inches of insulation. But newer homes in central and southern arizona are insulated to ratings of r 30 to r 38 while newer homes in northern arizona generally have attic insulation at r 60 because of colder winters.

Things to consider when insulating your garage. If it isn t at least 19 inches deep add more. When you should insulate the garage. The other option is purchasing a pre insulated garage door that may have a higher r value.

Garages typically aren t built to be airtight and have lots of air gaps to the outdoors. 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. Most garages are a refuge for all kinds of flammable and noxious stuff. This will serve the same function of keeping hot or cold air inside the garage as it does for the rest of the house.

The higher the r value the better the thermal performance of the insulation. Add insulation to attic. Paint gas oil cleaning products pesticides and other chemicals are stored on garage shelves right next to the living spaces inside of your home. It s also important to realize the value of air sealing in conjunction with insulation.

Most garage door insulation has an r value of between r 8 and r 12 because it is so thin to fit the space. As you can see there s some variation in r value depending on the particular type and brand of products used. If you already have drywall installed around your garage but don t have it insulated then blown in insulation may be the answer. Depending on where you live it s recommended that attics have a minimum r value of r 30 in warm climates to r 60 in cold climates.

Check rim joists and unfinished basement walls and compare depth with an r value map and chart for your area. This adds insulation to the garage door without impeding its functionality. 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.