If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor.
Varage and kitchen attic are connected should i insulate.
But if the garage is heated you should definitely insulate.
Yes you should insulate your garage attic if.
It isn t important to insulate the ceiling between the attic and the garage because those areas are not affected by a home s heating and cooling system.
You are turning the garage into a bedroom.
You have an air conditioned room above your garage.
You want to keep your garage cool for your dog.
If these walls are not insulated the temperature of the garage can affect the rooms and make the house s heating and cooling system work harder to compensate.
Then cover it with drywall.
When you should use garage attic insulation.
Use fibreglass cellulose foam board or closed cell spray foam if it were my garage i d go with spray foam.
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.
It is important to insulate any walls that separate the garage from air conditioned rooms in the house.
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.
You can use rigid foam panels or do as tom silva does with nearly all houses these days.