Published: December 3, 2012
Garage door insulation cuts energy bills and street noise. Here's how to insulate your garage door yourself.
Garage door insulation can make your life warmer, cooler, and quieter. It lowers energy bills, acts as a barrier between you and street noise, and brightens an otherwise dreary space.
Garage door insulation is an easy DIY project; it’ll cost you about $200 to insulate two 9-foot-wide doors.
Any insulation type will increase the energy efficiency of your garage door. Here are the most popular types to apply to the back of garage doors:
The goal is to match your garage door to an insulation that’s easy to install and appropriate for your climate.
Steel garage doors. These doors can accommodate any type of insulation. Stuff the flexible insulation in the frames around the panels, with the fiberglass side touching the door. Or squeeze cut-to-fit foam board insulation into the frames.
Wood frame-and-panel doors. Cut and fit rigid insulation into the recesses between the door frames. For extra climate control, install two layers of foam board.
Flat garage doors. Foam board or reflective insulation is the best fit for garage doors without panels. Glue or tape the insulation to the garage door.
Even though buying and cutting insulation isn’t hard, garage door insulation kits make it even easier. They contain:
Kits to insulate a 9-foot-wide garage door cost $50 to $70.
Adding insulation to a garage door adds weight. Extra weight isn’t usually a problem with 9-foot-wide doors, but can strain the opening mechanism of larger doors. Your garage door’s spring tension might have to be adjusted -- a job best left to a garage door professional.
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