Attic insulation is designed to keep heat in your home in the winter and out of your home in the summer. Heat rises and, in the winter, any air that is heated by your furnace goes up and out through your attic. In the summer, your roof becomes very hot and, with no place for the hot air to go, your attic can become the hottest space in your home. Without attic insulation, that heat would quickly get into your home.
So attic insulation is probably the most important insulation in your home. The type of insulation you choose is also important because they are not all created equal.
Fibreglass batt insulation is probably the most popular type of insulation for attics. It is easily installed by homeowners and it fits perfectly between the joists of your ceiling. Installers need to be careful to make sure that the batts fit every crevice and corner snugly or a lot heat will get through the gaps.
Moisture in your attic will reduce the degree of insulation you get from fibreglass batts. Any leaks, condensation problems or other sources of moisture must be fixed before installing batt insulation.
Loose-fill fibreglass and cellulose is another popular...
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