Ice Dams Explained: What They Are, Why They’re Dangerous, and How to Prevent Them
- Bigfoot Construction
- 3 hours ago
- 2 min read
Ice dams are a common winter roofing issue in cold climates that occur when snow on a roof melts, flows downhill, and then refreezes at the colder eaves. The resulting buildup of ice can trap water behind it, allowing moisture to back up under shingles and into the attic or interior walls. According to experts, these ice dams can cause significant damage to roofing systems, insulation, and interior finishes if left unchecked.
The American Pressure Inc. blog explains that ice dams form when roof temperatures fluctuate — typically due to heat loss from the home — causing snow to melt unevenly. The melted water runs down and refreezes where roof temperatures are lower, forming a ridge of ice that impedes further drainage. Over time, this can lead to water infiltration, rotted sheathing, and costly repairs.
To prevent ice dams, professionals recommend improving attic insulation and ventilation, sealing air leaks, and ensuring even roof temperatures throughout winter. Other steps include using roof rakes to remove excess snow and installing heating cables along vulnerable roof edges. Understanding the causes and prevention of ice dams can help homeowners protect their roofs and reduce the risk of winter weather damage.
Ice Dams Don’t Fix Themselves — We Do
Bigfoot Construction is now offering steam-based ice dam removal, the safest and most effective method for clearing dangerous ice buildup without harming your roof. If you’re seeing ice dams, leaks, or heavy icicles, don’t wait for damage to spread. Contact Bigfoot Construction today to schedule ice dam removal and protect your home this winter.