Ice Dams: What They Are, Why They Form, and How They Damage Your Home
Ice dams are a common winter problem in Minnesota and one of the leading causes of cold-weather roof leaks. At Top Tier Roofing, we see ice dam damage every year—often after water has already entered the home.
What Is an Ice Dam?
An ice dam forms when snow on your roof melts, runs down toward the eaves, and refreezes. This creates a thick ridge of ice that blocks proper drainage. As melting continues, water gets trapped behind the ice and is forced back under shingles and into your home.
What Causes Ice Dams?
Ice dams are usually caused by heat escaping from the house, not the snow itself. Common causes include poor attic insulation, inadequate ventilation, heat loss warming the roof surface, and repeated freeze-thaw cycles. These conditions cause uneven roof temperatures that lead to melting and refreezing.
Why Ice Dams Are a Serious Issue
Ice dams can cause roof leaks, stained ceilings, damaged insulation, rotted roof decking, mold growth, and gutter failure. Large icicles along the eaves are often a warning sign of a bigger problem above.
How Top Tier Roofing Can Help
Preventing ice dams starts with identifying the root cause. We provide professional inspections, ventilation solutions, insulation guidance, and repairs to protect your roof and home long-term.
If you’re seeing ice buildup or winter leaks, contact Top Tier Roofing today for a professional inspection before the damage gets worse.
