The answer to 'roof installation ice dam' is that ice dams are a common problem that can occur during the winter months, especially in areas with heavy snowfall. Ice dams form when melting snow on the upper part of a roof refreezes at the roof's edge, creating a barrier that prevents water from draining properly. This can lead to water backing up under the roof shingles and causing leaks and damage to the home's interior.
The main causes of ice dams are poor insulation and ventilation in the attic, which allows heat to escape and melt the snow on the roof. Symptoms of ice dams include icicles forming at the roof's edge, water stains on the ceiling or walls, and damage to gutters and downspouts. Solutions can include improving attic insulation and ventilation, installing heat cables or roof de-icing systems, and carefully removing snow and ice buildup from the roof.