What is ice damming?
Ice dams are formed by the continuous melting and refreezing of snow on a roof. Caused by heat escape, ice damming occurs due to lack of insulation or the backing up of frozen slush from eavestroughs.
Why is ice damming bad?
Water from melting snow can flow under snow until it reaches the unheated soffit area and refreezes. This causes a dam that can easily push back up under the shingles, causing water to enter the attic. In result, homeowners can face damage to interior walls, their ceiling, insulation, and of course the roof deck. To reduce the likelihood of ice dam formation during cold winters, we’ve collected the following tips that all homeowners should consider:
- Keep the attic space cold by insulating it to prevent or reduce the amount of heat loss from the interior of the home, which in turn can melt the snow on the roof.
- Install baffles when insulating to ensure airflow at the eaves.
- Ensure that the eavestrough is lower than the roofline to allow snow and ice to slide off.
- Ensure the eavestrough is free of debris by regular cleaning or by installing Gutter Guard.
- Install at least 3’ of ice and water shield at the eaves of all heated roof decks in conjunction with a metal drip edge or eavestarter. This creates a watertight envelope at the eaves above the eavestrough and greatly reduces the odds of an ice-damming leak.
For all of your ice damming concerns, give us a call today at 1-888-677-7757. Our Roof Pro Plus roofers are standing by to assist you.