Garage Attic Insulation R Value

If it isn t at least 19 inches deep add more.

Garage attic insulation r value.

Recommended insulation levels for retrofitting existing wood framed buildings. When you should insulate the garage. 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.

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. Achieving greater r values in exterior walls. 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. The higher the r value the better the thermal performance of the insulation.

Things to consider when insulating your 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. As you can see there s some variation in r value depending on the particular type and brand of products used. Garages typically aren t built to be airtight and have lots of air gaps to the outdoors.

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. Most garage door insulation has an r value of between r 8 and r 12 because it is so thin to fit the space. If you already have drywall installed around your garage but don t have it insulated then blown in insulation may be the answer.

A contractor will come and open up a hole in the wall pump in a cellulose insulating material and then patch up the opening. This will serve the same function of keeping hot or cold air inside the garage as it does for the rest of the house. Add insulation to attic. Existing 3 4 inches of insulation.

The other option is purchasing a pre insulated garage door that may have a higher r value. Most garages are a refuge for all kinds of flammable and noxious stuff. It s also important to realize the value of air sealing in conjunction with insulation.