Garage Attic Insulation R Value

Garages typically aren t built to be airtight and have lots of air gaps to the outdoors.

Garage attic insulation r value.

Add insulation to attic. 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. Things to consider when insulating your garage. As you can see there s some variation in r value depending on the particular type and brand of products used.

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. The higher the r value the better the thermal performance of the 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. Recommended insulation levels for retrofitting existing wood framed buildings.

You can achieve better thermal performance in your attic by adding an additional layer of 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. 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.

Most garages are a refuge for all kinds of flammable and noxious stuff. This adds insulation to the garage door without impeding its functionality. Slide a yardstick or tape measure into the existing insulation. 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 will serve the same function of keeping hot or cold air inside the garage as it does for the rest of the house. It s also important to realize the value of air sealing in conjunction with insulation. Achieving greater r values in exterior walls. The other option is purchasing a pre insulated garage door that may have a higher r value.

When you should insulate the garage. 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. 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.