Ice - Dams

A combination of snow accumulation, warm attic temperatures, and cold outside temperatures causes a freeze-thaw cycle.

Water trapped behind the ice dam backs up under shingles, causing leaks into the house, damaging insulation, walls, and ceilings. ICE DAMS

Preventing ice dams involves maintaining a cold roof by minimizing heat escape from the home. How to Prevent Ice Dams on Your Roof - Allstate A combination of snow accumulation, warm attic temperatures,