The temperature in a garage can climb well over 100 degrees. Rooms over and adjacent to it will get very warm. A steel garage door will radiate heat just like a toaster. Even in early morning, the temperature will be 10-15 degrees warmer than the outside temperature.
Driving, in the summer months, heats up almost all mechanical parts on an automobile. Now park that puppy in a warm garage, close the doors, put in the cake and bake for 45 minutes. Ok, we know it gets hot in there! What can we do about it, without having to take out a second mortgage? Short of spending $500 a month on air conditioning to cool down your easy bake oven, here are several ideas that can help with the problem without raiding the kid’s college funds. We will look at insulation, exhaust fans and screening.
Insulation
Automobiles radiate heat for hours after they are parked. You do not want to close an insulated garage door after placing a hot car inside. An insulated door becomes a big problem in the summer months. The space above your garage, especially if you have a living area above, can always do with extra insulation. This applies to the walls that are shared with the home. This is a resonably inexpensive way to keep adjoining spaces cooler.
Exhaust Fans
To cool your garage as efficiently as possible, you need to install one or two powerful sidewall ventilation exhaust fans. There are many varieties and price ranges of fans designed to pull air through and exhaust it back outdoors. Don’t get you expectations up too high because with just a fan, your temperature will still be higher than the temperature outside. Leave the garage door up about 4-5 inches to insure plenty of air flow from the outside. Fans will do better if located high on the wall, opposite the garage door. Look for high quality motors, well balanced fan blades, a timer or thermostat control and weatherproofed, self closing louvers. As with anything, you get what you pay for.
Screening
For anyone who spends a good deal of time in their garage screening in front of the garage door offers several advantages. The cost for a professional to install a motorized roller shade could be expensive. I am concluding that if you spend serious time in your garage, you have to be pretty handy.