3 Things You Should Know About Garage Door Insulation

When it comes to home insulation, most people are aware of what they have and the R-value it provides. But when it comes to your garage door, many homeowners aren’t even sure if it's insulated at all.

That’s a big mistake. An insulated garage door can offer real benefits that go beyond just keeping your home warm or cool. Whether you're trying to save money on energy bills, protect your belongings, or simply improve comfort, understanding garage door insulation is important.

1. It Helps Save Energy and Money

Even though you may not heat or cool your garage, the air from your home can still escape through an uninsulated door. In the winter, this means your heating system works harder to keep your house warm, while in the summer, it struggles to maintain a cool temperature. An insulated garage door acts as a barrier, reducing energy loss and helping lower your utility bills.

2. It Protects Your Valuables

Many items stored in a garage—like tools, lawn equipment, and even vehicles—are sensitive to temperature changes. Fluctuating temperatures can cause condensation, leading to rust, mold, or damage over time. Insulating your garage door helps stabilize the environment inside, protecting your possessions from the elements.

3. Not All Insulation Is Created Equal

There are two main types of garage door insulation: polystyrene foam and polyurethane foam. Polystyrene is rigid and often used in panels, but it doesn't always fill every gap. Polyurethane, on the other hand, is sprayed and expands to seal all cracks and crevices. However, even the best insulation won't work well if the door isn't properly sealed around the edges.

Other benefits include improved soundproofing, better starting performance for your car in cold weather, and a more comfortable space for working or storing things. So next time you’re considering a new garage door, make sure it’s both well-insulated and properly sealed.