Many home insulation projects neglect one important area of the house – the garage. Garages are often completed without insulation as a way of cutting down on construction costs. The idea behind this is that the garage is only used for car parking at night and, therefore, does not need to be insulated. But in many cases, the garage is used for other purposes including as a play area, work area, and for storage that must be accessed on a regular basis.
The following are some compelling reasons to insulate the garage:
- An insulated garage provides an addition to the home’s living space. When the garage is insulated, homeowners could easily add heating or cooling units to make it a comfortable place to stay when the house gets crowded.
- Installing air seals on the common walls between the living spaces and the garage will minimize heat transfer. A garage that has no insulation will become very cold in winter, transferring the cold air into the living spaces of the house.
- Insulating the garage will save energy when you are cooling or heating the house. Garage insulation will increase the R-value of the common walls between the garage and the living spaces.
- Garage insulation will reduce the transmission of noise into your house. You will be less likely to hear the car revving up or noisy power tools.
- Insulating your garage will make getting in your car more pleasant on cold mornings. Entering a non-insulated garage can feel a bit like walking into a freezer.
Before you start insulating the walls of your garage, make sure to air seal the common walls between your garage and the living spaces of the house. Air sealing will reduce energy loss as well as keep the hazardous garage fumes from entering your house. Silicon caulk will be effective in closing up holes and cracks. Use expanding foam insulation for the space at the top and bottom of walls.
Garage insulation should cover the walls and the attic. When completed, your garage can be as comfortable as the rest of the house, even in extreme weather.