The answer to 'downspouts ice dam' is that ice dams forming in downspouts are a common winter roofing problem caused by poor insulation, ventilation, or drainage. Symptoms include icicles hanging from the gutters, water backing up under the roof shingles, and potential roof leaks. To solve this, you can try DIY solutions like clearing the downspouts, adding heat tape, or improving insulation. However, if the issue persists or causes significant damage, it's best to call in a professional roofing contractor to properly diagnose and fix the underlying problem.
Ice dams occur when heat escaping from the home melts snow on the roof, causing water to run down and refreeze at the roof's edge. This creates a dam that blocks the water flow, leading to backups and leaks. Factors like poor attic insulation, inadequate ventilation, and clogged downspouts can contribute to this issue.