The garage is an important asset of one’s home, especially if it’s used for other purposes, aside from keeping the vehicle safe. Many people use a garage as storage space, but aside from that, there are other intended uses. For example, some might use it as a home office, a home gym or an arts and crafts room. It all depends on your needs and desires.

However, your garage needs to be properly equipped, and most of all, insulated. The proper insulation will make sure that your garage is warm in the winter and cool in the summer. So here are some helpful pointers on how to insulate it properly.

Get rid of all things attached to the walls

Walls are convenient storage spaces, so the first step is to remove every single object that is mounted to the wall including your thermostat. A lot of people tend to use hooks, screws and nails in their garage space to hang all the items they don’t use regularly. Also, if you use the walls to hang a bicycle or floating shelves, be sure to remove all of that as well, so you’ll be able to start work. In order to do that, you’ll mostly need a hammer, a pry bar or a screwdriver, so don’t forget your toolkit.

Cover any gaps or cracks along the exterior wall

This is the next step that you need to do. First, you’ll need to carefully inspect the exterior walls in order to detect any cracks or holes. Neglecting these cracks can be dangerous because they’re often where insects tend to hide. Besides, mold also tends to grow there, and covering them will drastically reduce the chance of insects on mold appearing. The same goes for water damage risks that your Vivint cameras might miss. The best way to cover that is to use a water-proof masonry sealant with a caulking gun. This will seal all the holes, cracks and gaps very efficiently. Just remember to let the sealant dry and cure before you proceed with the rest of the insulation process.

Install batts of fiberglass insulation

Knowing how to insulate a garage is one of the handiest home improvement things to know. So after you’re finished covering cracks, it’s time to install fiberglass insulation between wall studs. That will cut the awkward spaces. Using fiberglass batts and rigid panels is one of the most common solutions, due to its affordability and versatility. Insulating the gaps between wall studs requires a sharp utility knife. That knife will cut the insulation to the correct size instead of forcing it to fit the entire space.

Also, remember to add a vapor barrier on the warm side to protect the insulation.

Make sure you insulate the ceiling and garage door too

This is the only way to make sure that your garage is completely and properly insulated. These two surfaces largely contribute to the flow of heat in and out of your garage. Ceiling is basically insulated the same way as the rest of your garage, however, you’ll be required some help (usually another person), one standing up the ladder and the other one to help with passing the tools, supporting the ladder and holding the insulation.

Garage doors require a bit of a different way of insulation, as there are no wooden frames to help with securing. Therefore, you’ll need adhesive retainer pins to apply to the garage door. After that, it’s essential to cut each insulation to fit the size of each door panel. After that, just push the insulation into place over the retainer pins, and then secure the insulation using snap-on retainer pin caps. If this seems like too much work, there are garage insulation kits that make the job much easier.

Install a drywall

The last step in the process is to install drywall. Before you do that, be sure to check whether the insulation is fully installed and the vapor barrier is in its place. Installing drywall isn’t a must, but the space will definitely look better with finished walls. When you complete the entire process, your garage will be properly insulated, and it will also look fully made and presentable.


Garage insulation is crucial, especially if you tend to spend a lot of time there. Plus, doing that will also lower your energy bills, which is why the insulation process is a great decision that you should consider doing.