If you have a flat garage roof and an attic above you can install the garage insulation from below using a standard ladder.
Insulating attached garage roof.
To prepare determine the area of the space you plan to insulate and add 10 to 20 percent to account for mistakes and odd spaces you need to fill.
The regulating temperature has positive effects on your cooling and heating costs.
One of the best methods you can use if you want to regulate the temperature of your garage is to insulate the garage roof.
The most important issue is that attached garages must have a system in place to keep carbon monoxide co from a running vehicle inside the garage from filtering through the walls and ceiling into the house.
You can buy insulation kits for standard metal garage doors or you can cut pieces of rigid foam insulation to fit each door panel section.
Be sure to count the spaces above doors and windows.
Adding insulation won t make your garage a perfect temperature by itself but it will take the edge off the freezing winters and the sweltering summers.
I wrote a big article discussing whether you should insulate your garage.
However if you have a cathedral style garage roof you will need a scaffolding to get into the upper areas of the roof.
Insulating an attached garage has some special considerations that you must address differently then a unattached garage.
Don t insulate your garage walls and ceiling without insulating the big garage door too.