Accumulations of ice form at a roofs edge and prevent melting snow from draining properly. Water backs up behind the ice and often leaks into the house, damaging walls, ceilings, insulation, floors, furniture, and more, according to Steve Kuhl, owner of The Ice Dam Company and Kuhl’s Contracting in Hopkins, Minn.
Kuhl says the dams result from multiple variables interacting: the home’s quality of insulation, amount of ventilation, and architectural design; the climate; and the home owners’ lifestyle. “We see more ice dams when home owners want their interiors warmer. Ice dams are primarily the result of heat escaping into areas of the roofline where it’s not supposed to be. The heat melts the snow on higher roof areas, and the melted water travels to areas where it’s below freezing such as the eaves. It then refreezes and accumulates into a dam that prevents melted water from leaving the roof.” Kuhl says.
Read more about them and solutions for proper removal at The Ice Dam Company website.