Proper attic insulation, attic ventilation and roofing installation are all keys to preventing ice dams. In our article “How do ice dams form”, we explained what causes ice to form at the eave edges. The key to preventing ice dams is obviously to stop warm air from getting into the attic space as well as getting the warm air that does enter the attic out quicker. This is accomplished by making sure that there is adequate insulation installed.
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