The garage wall adjoining the house may be insulated, but the other three walls are often left uninsulated.
Garage walls often lack drywall, making the exterior siding the only form of insulation.
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For two-by-four studs,use R-13 or R-15 insulation.
For two-by-six studs, use R-19 or R-21 insulation.
Garage windows and doors may be old and in need of replacement.
If the garage wall studs are exposed, replace the windows withnew-construction windows rather than replacement windows.
Brickner explains how insulated garage doors are more energy-efficient than standard single-layer doors.
This is due to the extra layer of polystyrene or polyurethane insulation between the steel panels.
Tip
Thegarage door should be insulated, Cash recommends.
Instead, it’s best to entirely replace the door with an insulated door.
Garage doors are meant to protect vehicles and keep the inside dry, but they aren’t tightly weather-sealed.
“For occasional garage use, a good-quality portable space heater can do the trick.”
The heater should be rated for garage use and have proper safety features.
A ventless heater could be another solid option if your home has natural gas available.
Cash adds that these must be installed by licensed contractors.
He recommends placing them in locations that are safe and allow the heater to distribute the heat evenly.
Vents allow fire in the garage to easily pass into the home.
