Ice damming occurs during the winter months when ice forms and builds upon your home’s roof. It blocks melting snow from draining off your roof. When water collects over time, problems could arise if it gets in your home.
If your roof wasn’t correctly installed and/or the attic area was not properly insulated, the backed-up water will enter the house and cause significant damage. If a reputable company has installed your home’s roofing system, you probably don’t need to worry about ice dams. A rubber membrane should’ve been installed beneath your shingles for blocking ice and snow.
Ice dams are a result of your home’s internal temperature. When hot air seeps through your home’s attic, it warms the exterior of your roof and melts the snow. Depending on the weather, the melted snow could also refreeze to build on the ice dam further.
They can be challenging to spot if there’s been recent snowfall. However, ice dams typically form in the eaves and valley areas of roofs.
We’ve created this blog to teach you the basics of ice dams. They’re very uncommon, but you may encounter one someday. Once you understand them, you can take steps to prevent them. We will also discuss ice dam removal.
Consistently regulating the temperature of your roof is the key to preventing ice dams from forming. We will discuss this below, along with other steps you can take to prevent ice dams.
We recommend sealing around wire and plumbing sections, attic hatches and light fixtures. If your attic isn’t too warm, then snow won’t continuously melt on your roof. As a bonus, humidity is stopped from entering the attic, which prevents mould from forming.
To cut some costs, some homeowners choose to have less insulation at the eaves of their roof. This can also be a way for roofing companies to save some money. Homeowners can also upgrade insulation to retain more heat.
These options will not only help prevent ice dams. Some will also help you save on energy year-round by reducing heat loss in winter and cool air in summer.
During winters with heavy snowfall, ice dams can be unavoidable despite prevention measures.
Removing an ice dam can be very dangerous. The safest bet is to have professionals remove snow and ice from your roof surface, overhangs, eaves and eavestroughs.
If you decide against professional help, avoid these common mistakes:
It can be tempting to tackle ice dam removal on your own.
We recommend contacting a professional roofing company for their guidance. You may be better off leaving the ice dam alone than attempting to remove it.
We hope this article has helped teach you about ice dams. Now that you have a better understanding of them, you can take steps to prevent them.
For more detailed information on roof ventilation and ice dams, visit the Canadian Roofing Contractors Association website.
For more general roofing information, we recommend visiting our website’s blog page.