Insulating Detached Garage Roof

There are a few different types of insulation you might look into for your detached garage.

Insulating detached garage roof.

Don t insulate your garage walls and ceiling without insulating the big garage door too. Whether you opt for spray foam blown in or fiberglass batts for your insulation it s likely you won t need a whole lot to fully insulate your entire detached garage. When constructing insulating a detached garage it is usually a good idea to add enough space in the back for storage and tools. How to insulate a garage step by step.

If the garage is open to the rafters the boards that support the roof use r 38 insulation between the rafters at the roof if they are 10 inches deep. However if you have a cathedral style garage roof you will need a scaffolding to get into the upper areas of the roof. Regulate your garage s temperature all year by installing insulation. If your garage is attached to your house you will notice a big difference in your home s temperature as well.

In either case you will need to follow the general steps below to insulate your garage roof. Keep in mind that the structural metal ribbing of garage doors is an excellent conductor of heat and this typically doesn t get insulated. To finish insulating your detached garage close up all cracks that are letting unwanted air inside. Insulation is one of the best investments you can make in your main house so it makes sense to seriously consider it for your detached garage.

Insulation rolls preferably ones easy to cut into pieces one of the best methods you can use if you want to regulate the temperature of your garage is to insulate the 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. In general if you re not heating or cooling your garage there is little benefit to insulating the ceiling because there s no costly heated or cooled air to keep in. 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.

A detached insulated garage can serve as a place for storage and tools maybe even a small shop but that shouldn t detract from the main purpose of housing the family car. To get more insulation in the garage install a ceiling and provide access to the space between the ceiling and the roof. I wrote a tutorial on how to waterproof and seal your garage walls using drylok. This will allow you to add the needed insulation.

Be sure to count the spaces above doors and windows. Especially in older garages the wood around door frames and window sills may have warped or. Last chance to waterproof your wall.