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.

Check rim joists and unfinished basement walls and compare depth with an r value map and chart for your area. Add insulation to attic. It s also important to realize the value of air sealing in conjunction with insulation. If you already have drywall installed around your garage but don t have it insulated then blown in insulation may be the answer.

Things to consider when insulating your garage. Existing 3 4 inches 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. 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.

The other option is purchasing a pre insulated garage door that may have a higher r value. This will serve the same function of keeping hot or cold air inside the garage as it does for the rest of the house. When you should insulate the garage. Achieving greater r values in exterior walls.

Recommended insulation levels for retrofitting existing wood framed buildings. A contractor will come and open up a hole in the wall pump in a cellulose insulating material and then patch up the opening. 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. The higher the r value the better the thermal performance of the insulation. If it isn t at least 19 inches deep add more. As you can see there s some variation in r value depending on the particular type and brand of products used.

You can achieve better thermal performance in your attic by adding an additional layer of insulation. Slide a yardstick or tape measure into the existing 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.