If you use your garage as a workshop, an art studio, an office, a laundry room, or any other space where you spend a lot of time, you may want to insulate your garage door. Insulation reduces the heat loss from your garage and helps keep it warm. There are several different DIY insulating ideas to consider, such as these three:
1. Polyethylene Film
If you don't use your garage for your car any longer and you don't care whether or not you can open the door, you can use polyethylene film to insulate it. A single layer of polyethylene film provides some insulation, and thick double-layered film provides even more.
To install it, you simply need to roll out several pieces of film and pull them over the inside of your door. Then, secure the film to the walls around your door using staples, u-nails, or adhesive. Make sure that the film extends above and below the door as well to prevent cool air from seeping through those openings.
The drawback of poly film is that, again, it blocks your door from opening and closing, and it doesn't insulate as well as foam or other types of installation.
2. Foam Insulation Boards
To insulate with foam boards, measure the panels of your garage door. Then, cut foam insulation boards to size with a sharp knife. Use silicone or another type of strong adhesive to glue the boards to the inside of your garage door.
If you like, you can add extra insulation to your door by leaving an air gap between the insulating board and the garage door. To do this, cut heavy-duty strips of cardboard the same width as your garage door panels. Glue a piece of cardboard on the top and bottom of each panel. Then, adhere the insulating boards to the strips of cardboard. The cardboard makes the insulation jut out a bit, creating a space for air.
Before adding the insulation to your garage door, weigh all of your materials. Then, check how much weight your garage door opening mechanisms are designed to hold—this information should be in the user's manual that came with your garage door opener. If you overweight the door, the springs will be under too much tension, and they could snap and come loose from the door.
If you are not sure whether or not your garage door opener can handle the extra weight, consult with a repair person. They can assess the situation and adjust the springs as needed. Similarly, if you know how much extra weight the door can handle and you plan to add more than that, call a repair person to address the spring tension.
3. Low-Density Spray Foam
If you want an easier application process, consider using low-density spray foam to insulate your garage door. There are several types of spray insulation, but if you don't want to add lots of extra weight to your garage door, you should use low-density spray foam. This is the lightest weight spray foam on the market—unfortunately, however, it doesn't offer as much insulation as high- and medium-density spray foam.
To install it, grab the can of spray foam and spray it over the back of your garage door. Use a back-and-forth motion to cover the panels of your garage door, and be careful not to spray insulation on the windows (if you have them) or the springs or other opening mechanisms of your garage door. This type of insulation typically weighs half a pound per square foot. If you spray it an inch thick, it will take 12 square feet to add up to one cubic foot. Use that to compute the amount of weight you have added to your garage door. Then, again, work with a repair expert to adjust the springs.
If you decide against taking a DIY approach, contact a garage door expert from a company like American Eagle Garage Door Services. They can help you come up with other options or help you find an insulating door to replace your existing door.