The primary reason to insulate any part of the home is to provide a thermal barrier between conditioned heated or cooled interior space and the.
Heated garage attic insulation.
If you re not adding heat there s little point in insulating.
Insulate and air seal any knee walls vertical walls with attic space directly behind them in your home as well.
Before insulating seal any air leaks and make roof and other necessary repairs.
In reality insulation merely slows the transfer of heat through the insulated barrier wall ceiling floor etc.
If you already have drywall installed around your garage but don t have it insulated then blown in insulation may be the answer.
It s a popular misconception that insulation adds warmth.
Danny lipford in an uninsulated attic over a garage.
Insulating the area in the attic over a garage might keep the temperature a little more stable in the garage but it does little to reduce the amount of energy needed to heat and cool your house so it s not a good investment of your energy dollars.
When you should insulate the 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.
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.
If it is located in a conditioned part of the house also remember to insulate and air seal your attic access.