It s double trouble for temperature control.
Hot attic over garage.
A lot of bedrooms over garages have both of these problems.
Will the garage heat rise to the attic.
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.
Builders rarely insulate the floor above a garage.
If not you may want to consider adding blown in insulation.
The heat from the garage will absolutely contribute to high temperatures in the attic space above as well as the finished rooms.
The biggest problem with these types of spaces is load capacity.
They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees.
And in homes with attic knee walls i e.
If you have a garage then you might want to create a little bit of attic storage above it.
Install electric ventilators and attic fans which remove hot air from an attic.
If the trusses of your garage roof cannot support an attic you will find that holes will develop in the ceiling of the garage.
Your attic is on the other side of the bedroom wall inadequate thermal treatment and air leaks can wreak serious havoc on comfort.