Yes insulating an attached garage is a must if you don t have a central a c or heating system that extends into the garage space.
Insulating attic over garage.
But what many may not know is an uninsulated attic drains energy and money.
Holes in the wall of the garage or gaps caused by switchboards and lamp holders can be sealed carefully.
Instead of insulating the garage attic insulating adjoining walls.
If the garage is unconditioned meaning there is no mini split or duct going to the garage there is no reason to insulate the garage s attic.
This is particularly imnportant if you have heating and air in the garage.
Many garages have an attic above them.
Studies for our climate have shown that no significant amount of savings were seen by insulating an unconditioned garage.
When you should insulate an attached garage.
You should have a vapor barrier between the insulation and the ceiling of your garage.
Protecting your garage and the valuable things inside it makes sense and can save money in the long.
In this case you would want to insulate the garage ceiling.
This is a wide open drafty space that homeowners typically use for storage.
Take the insulation up to your attic so that you are above the garage ceiling.
Sealing also consists of insulating the room above the garage or all the walls of the garage and replacing the external door of the garage with a double steel door with a thick even layer of polyurethane.
On the same hand if there is a bedroom above the garage and not an attic the same concept applies.
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 outdoors or unheated spaces such as an unfinished.
It isn t important to insulate the ceiling between the attic and the garage because those.
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.