Insulating Detached Garage Attic

If you live in sunny states like arizona texas and florida insulating a garage attic is a must if you want to keep your garage cool enough to withstand for short periods of time.

Insulating detached garage attic. Staple the paper flanges of the batts to the inside face of the rafters with your staple gun to hold the insulation in place. Place insulation batts in the spaces between the garage rafters. You can achieve better thermal performance in your attic by adding an. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

Achieving greater r values in attics. A radiant barrier is great for keeping the heat out of the garage attic. Keep in mind that the structural metal ribbing of garage doors is an excellent conductor of heat and this typically doesn t get insulated. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.

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. When you should insulate the garage if your home s hvac system does extend into the garage then the attic above it should be insulated as it would for any other room of the house. You won t be working in a huge space unlike your main house an empty cold attic or a wide unfinished basement. Plan to pull up the flooring and layer new insulation on top of the old.

The higher the r value the better the thermal performance of the insulation. Building a detached garage means you can make it as big as you want. Or as big as your lot allows. Because the simplest and cheapest way to insulate an attic is to add material to the floor.

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. 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. For me the bigger the better.

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 buy insulation kits for standard metal garage doors or you can cut pieces of rigid foam insulation to fit each door panel section. The garage attic is where a lot of the heat in during warmer months of the year. To get more insulation in the garage install a ceiling and provide access to the space between the ceiling and the roof.

Besides you might only be considering insulating the upstairs loft portion of your detached garage.