Ice Dams, Snow Load, and Freeze-Thaw: What New Jersey Winters Do to Your Roof
The short answer Ice dams are the biggest winter threat to NJ roofs. They form when warm air leaks into the attic, melts snow from below, and that meltwater refreezes at the cold eaves. The water behind the dam backs up under your shingles and into your home. Snow load is a real structural concern. […]
