Our Canadian winters have their frosty reputation for good reason. These extreme temperatures can affect the condition of your home and how it functions.
Your roof is one of the most important lines of defense between you and the natural elements. It helps keep warm air locked in during the winter months and prevents snow, rain or cold from penetrating the exterior of your home.
Ice dams on the exterior surface of the roof can be a problem, particularly for low-sloped roofs with an overhang. This is the result of snow accumulation on the roof and is more common on poorly insulated homes. After a snowfall, heat escapes from the attic and melts the snow on the roof. The water runs down and encounters the snow on the overhang, which has not melted because there is no attic below it. The water, which meets this snow, will freeze forming a dam at the lower edge of the roof. This moisture can then back up beneath the shingles and result in damage below. A well-insulated and ventilated attic will help reduce this problem.
Manitoba Hydro has an abundance of resources on their website to help you with energy savings (http://www.hydro.mb.ca/your_home/insulation/index.shtml)
Manitoba Hydro also offers a Home Insulation Program which provides rebates to homeowners who add insulation to their existing home. (http://www.hydro.mb.ca/your_home/insulation/program/index.shtml)
Remember a well insulated home uses less energy. That means lower heating and cooling costs and less environmental impact.