Ice damming is a common winter phenomenon in Wisconsin that can cause significant damage to your property. If you have Ice damming your have a problem that could be multiple issues.  Let's go through a few obvious scenario's to better understand why this issue occurs.

1. Inadequate Insulation: Homes with insufficient insulation are more susceptible to ice damming. When warm air escapes from the living spaces and reaches the roof, it causes the snow on the roof to melt. The melted snow then refreezes at the roof's edges, forming ice dams. Proper insulation is essential to maintain a consistent temperature and prevent the melting and refreezing cycle (U.S. Department of Energy, "Insulation Basics").
2. Ventilation Issues: Poor ventilation in the attic can exacerbate ice damming problems. Inadequate ventilation traps warm air in the attic, contributing to the melting of snow on the roof. Proper attic ventilation allows for the escape of warm air, preventing the conditions conducive to ice dam formation (University of Minnesota Extension, "Attic Ventilation").
3. Roof Design: Certain roof designs are more prone to ice damming. Homes with complex roof structures, multiple dormers, or intersecting roof lines may have areas where snow accumulates unevenly, leading to the formation of ice dams. Understanding the potential vulnerabilities in your roof design can help in implementing targeted preventive measures (Journal of Building Physics, "Effects of Roof Shape and Snow Drift on Ice Dam Formation").
4. Clogged Gutters and Downspouts: Clogged gutters and downspouts prevent proper drainage of melted snow. When water is unable to flow freely through the gutters, it can accumulate at the roof's edge and freeze, contributing to the development of ice dams. Regular gutter maintenance is crucial to prevent blockages and ensure proper water drainage (Insurance Institute for Business & Home Safety, "Maintaining Gutters and Downspouts").
5. Sun Exposure: While the cold climate is a significant factor, sunlight can also contribute to ice damming. On sunny winter days, the sun's rays can warm certain areas of the roof, causing localized melting. As the melted snow runs down the roof and refreezes at the colder roof edges, ice dams can form (National Research Council Canada, "Solar Radiation and Snow on Roofs").

Conclusion: Ice damming may seem to be a complex issue influenced by various factors but in reality a proper evaluation of the roof will help determine the situation.  Consult an independent person to evaluate your roof not a roofer.  There goal is to get the job and many do not know how to solve the problem. As a Wisconsin resident you should be proactive in addressing these contributing factors to minimize the risk of ice dam formation and protect their homes from potential damage during the winter months. Implementing proper insulation, ventilation, and regular maintenance practices are key steps in safeguarding homes against the challenges posed by ice damming.

Contact 1st Choice Inspection to have an independent evaluation of your situation.