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How to Cool Down Your GarageIs Your Garage Too Hot?
Here are some tips on how to keep the heat down in your garage during the summer.

1. Insulate Your Garage Ceiling and Walls

The best thing you can do to keep the heat down inside your garage is to seal it off and insulate it from the heat outside. A well insulated garage can be 20 – 30 degrees cooler than the outside temperature, and just as insulation keeps heat out in the summer, it will also help prevent heat loss in the winter. You could start by insulating the underside of the roof with spray foam, which will greatly save on the heating and cooling bills, and if you don’t have a ceiling in your garage, it would be good to put one in, thus creating an additional heat barrier. You will want to insulate the ceiling and walls as much as possible using a combination of rolled insulation and dry wall or sheet rock. Staple the rolled insulation between the rafters in the ceiling and the 2x4s in your walls and then cover with dry wall or sheet rock. If you can only afford to insulate one section at a time, then insulate your ceiling first given the sun beams straight down on it and it is the hottest part of the garage next to the garage door. Once your ceiling and walls are insulated, ensure all of the doors and windows are sealed.

2. Insulate Your Garage Doors

Garage doors are usually not insulated, and given their wide span across your home, a non-insulated door could leave you with a gap in the heat seal the rest of your home has around its doors and windows, thus allowing the heat to enter through the largest opening of your home. The concrete floor in your garage will absorb both heat and cold so if your garage is insulated, the concrete will help keep it cool, but if it’s not, then the concrete will absorb the heat and keep the garage hot. The garage door is the largest gateway for bringing heat to your garage floor so it makes sense to insulate it, if possible. If you don’t have the money to buy an insulated garage door, then you can apply some Styrofoam insulation to the garage door panels.

3. Ventilate Your Garage

Once your garage is completely sealed, insulated, and sheet-rocked, you can either go with the most optimal but more expensive setup, which would be to have the garage air conditioned, and if that’s not an option, then the next best thing would be to ensure it is well ventilated. Heat rises so you’ll either vent it from the top, which may cause you problems later with leaking during rain storms if you don’t have your vents well sealed, or you can vent it out the wall. You can ventilate it through various vent designs, and even better, install an exhaust fan on the roof to pull the hot air from the garage or attic. You can even get one that is thermostat-controlled. If you install a fan, install one with a backdraft damper that will prevent the hot air from entering. You could also try ceiling fans in the garage to help move the air. A ceiling fan or two, a garage or attic fan, and some intake vents would make a huge difference in the heat reduction, and to help save on the electric bill, the fan could be solar-powered.

Additional Things to Keep in Mind:

  • Your Home and Garage Design:
    • The color of the home and garage does matter when it comes to managing inside temperatures. Lighter colors on the roof and exterior walls and garage doors are better for keeping the heat down since darker colors absorb heat.
    • During the day, the goal is to keep the sunlight out of the garage, and you can help do this by adding some shades to the windows. A large tree or an awning can also provide some shade.
  • Your Garage Door Opener: It is important to not run your garage door opener excessively in high temperatures. They are not designed to run multiple times in a row, and they can overheat after a few runs in a short period of time. If you suspect your motor is overheating, call a professional to have it checked.

We hope these tips help you cool your garage down. If you need any assistance on your garage door needs and are located in one of our service areas, please give us a call.