Garage door insulation is a great way to help keep your garage—and the things inside it—warm in the winter and cool in the summer. The material used for insulation helps reduce heat transfer from one side to the other, so that your items won't be affected by extreme temperatures and climate outside. It also helps protect against noise, especially if you store noisy tools or equipment in your garage. Insulation can be installed during construction or retro-fitted on existing doors, and comes in a variety of materials and layer options. Choosing a higher R-rated insulation will improve your door's energy efficiency even more, making those inside feel even more comfortable year-round!