Garage door insulation kits start at about $50 USD for a basic kit. More expensive kits come with more tools and accessories.
Do this for each garage door panel until each panel has 2 retainer pin placement marks. Some kits may also come with adhesive or tape to hold the insulation in place. Always refer to any instructions on the kit you purchased to secure the insulation properly.
The retainer pins will stabilize the garage door insulation so that it doesn’t fall off when the garage door is open and hanging above your car. [4] X Research source
The insulation that comes in your kit will already be cut close to the size of garage door panels, but you may need to make minor adjustments for them to fit your specific garage door. [6] X Research source You can make cutouts in the insulation for anything on the inside of the garage door, such as a handle or a lock. Hold the insulation over the handle or lock and draw a rough outline where you need to make a cutout. Use your utility knife to cut away the insulation inside the outline you drew. You should wear gloves when you handle and cut insulation to avoid getting fiberglass slivers.
Repeat the process for each garage door panel until you have completely insulated your garage door. Most insulation kits are designed to cover a garage door that is 9 ft (2. 7 m) wide. If your garage door is bigger, then you will need additional kits to fully insulate it. You should check the balance of your garage door after you insulate it because insulation adds weight. Open it halfway and then stop it and let it hang. It should stay in place without dropping if it is balanced. If the door falls when you let go of it halfway, then hire a garage door mechanic to adjust the spring tension.
You only need to insulate the walls that are shared with another room in your home if your main goal is cutting down on energy costs in your home. This will help protect your home from cold or hot garage air, as well as any noise from your garage. [9] X Research source Insulation is a great sound barrier as well as a way to control temperature. If you are using your garage as a workshop, or for other noisy activities such as drum practice, then insulating it can help protect your neighbors and the rest of your home from the racket.
Blow-in insulation can be installed in just a few hours, however, it is typically more expensive than do-it-yourself insulation since you will need to pay a contractor to do the installation. Your other option, in this case, would be to remove the drywall and proceed to insulate the wall yourself normally. It is recommended to use blow-in insulation so that you don’t destroy the drywall and create more work and expenses.
Batt insulation is the standard cotton-fiberglass insulation used in housing and it is already cut to fit between standard framework studs. Batt insulation comes in compressed packaging. Make sure you clear enough space in your garage so that when you open the packages you have room to work. For walls connected to other rooms in your home, install the batt insulation with the paper side backward facing the connected room. The paper side should always go towards the space that you are trying to insulate most, so in this case, the room inside your home takes priority over the garage. For walls that are not connected, install the insulation with the paper side facing inwards towards the garage. Standard studs are placed every 16 in (41 cm) in the framework of housing.
Rigid foam insulation is almost twice as expensive as batt insulation. Batt insulation is the cheapest and most efficient form of garage insulation. You can use a small can of spray foam to seal cracks and crevices, such as those around windows and doors, where rigid foam and batt insulation won’t fit. [10] X Research source
Polyethylene plastic is the most common kind of vapor barrier. You can buy sheets of it at a home improvement center. Cut away any excess vapor barrier with a utility knife after you have stapled it and completely covered the insulation.
Drywall will greatly increase the cost to your garage insulation project, but you can also use it to turn your garage into a fully functional additional room of your home. Decide if it is worth the extra cost and effort depending on the end result you want.
Trim batt insulation with a utility knife to fit any irregularly-sized spaces in the rafters. You can use a can of spray foam insulation to seal hard-to-reach areas and small crevices where you can’t fit batt insulation.
Polyethylene plastic or foil vapor barriers are the most common and are readily available at your local home improvement center.
Blow-in insulation is not a process that you can do yourself, but it is the recommended option to get insulation into ceilings that are already sealed up. It would be more expensive and time-consuming to unseal the ceiling and then rebuild it.
