What you need to know about home insulation

TORONTO – While most homeowners don’t give much thought to what’s behind their walls, proper insulation is of key importance to having a comfortable, healthy home. Besides keeping your home warm in the winter and cool in the summer, insulation can help lower your energy bills, prevent mold growth and also keep unwanted noise out.

What insulation does

Insulation helps keep outdoor air from getting inside your home and conditioned indoor air from escaping. This is achieved by trapping pockets of air and slowing down the in/out process.

“In winter, heat flows directly from all heated living spaces to adjacent unheated attics, garages, basements, and even to the outdoors,” the U.S. Department of Energy states on its website. “Heat flow can also move indirectly through interior ceilings, walls, and floors — wherever there is a difference in temperature. During the cooling season, heat flows from the outdoors to the interior of a house.”

The Canada Housing and Mortgage Corporation (CMHC) compares a properly insulated house to dressing for the weather.

Read more: What you need to know about home insulation