How To Insulate A Detached Garage Attic

Then cover it with drywall.

How to insulate a detached garage attic.

The mini split will help cool or heat the space and the garage attic and door insulation will seal the heat or cool air in for longer. Use fibreglass cellulose foam board or closed cell spray foam if it were my garage i d go with spray foam. You won t be working in a huge space unlike your main house an empty cold attic or a wide unfinished basement. As a high end material typically used for energy efficient construction spray foam is overkill for most garage projects.

Insulation is not as important in an insulating a detached garage as in your home. This adds insulation to the garage door without impeding its functionality. Without insulation though your mini split heating and cooling unit will have to run longer and cost you more money in electricity. But if the garage is heated you should definitely insulate.

For the purposes of this discussion we ll cover batt and blanket. Spray foam is excellent for both r value and for air sealing. This rigid foam is thinner than fiberglass batt insulation but is still an effective method of insulating. Spray insulation is best performed by a pro and requires a good bit of setup in advance.

Most garage door insulation has an r value of between r 8 and r 12 because it is so thin to fit the space. Beyond the typical functions of keeping heat cold and dampness in or out insulation can also help you keep the din of the outside from entering your garage and the activities you pursue in that space from escaping to your neighbors or the. Use a special foil backed blanket insulation to fit over the inside of the garage door. Once you re sure the panels are the correct size glue them in place with contact cement.

Place insulation batts in the spaces between the garage rafters. If you live in a very cold climate you would need to consider insulation to keep the car from freezing but in southern areas you could probably get by with r 19 insulation in the attic and none in the walls. There are several insulation types you can use including batt or blanket blown in and spray. Face the paper backing toward the inside of the garage.

But it might make sense if you re converting the garage to living space. Just remember to use thicker r 40 insulation. This will help while you re up on the ladder. Staple the paper flanges of the batts to the inside face of the rafters with your staple gun to hold the insulation in place.