What Is An Ice Dam?
An ice dam is a ridge or build-up of ice at the bottom edge of the roof. When ice dams form, the snow that’s trapped behind the ice melts and puddles behind the ridge. Shingle roofs are not designed to be waterproof; they’re designed to shed water. Once water has accumulated and has nowhere to go, it finds a way into the home through nail penetrations and behind flashings.
How Do Ice Dams Form?
Ice dams can form in a variety of ways. The most common way is when large amounts of snow accumulate on a roof, and some of the snow begins to melt. The melt water runs down the roof underneath the snow blanket, and when it hits the cold edge of the roof, it refreezes. The ice builds and builds, eventually creating an ice dam that traps the rest of the melt water up on the roof. Other factors leading to ice dams are things like hot spots on the roof. They can occur around vents, skylights, or above an area that lacks sufficient insulation. These hot spots will melt the snow only to have it refreeze as it runs down the roof over a colder area of the roof, usually at the edge.
For a more technical explanation CLICK HERE.
News Article: This winter is “Worst ice dam season in 20 years”. CLICK HERE.
The Sela Solution
Sela specialists have been safely taking care of our homeowner’s snow and ice headaches for years. Whether it’s routine snow removal to prevent ice dams, or emergency service to remove ice from a leaky roof, you can trust Sela to tackle any job, big or small. The Sela experts can handle snow and ice removals from the entire roof, or just focus clearing channels in your ice dams, which ever better suits your budget. For the extreme ice problems, Sela also offers steam ice removal service.
Call us today to schedule your service!