The answer to 'asphalt shingles ice dam' is that ice dams are a common problem that can occur with asphalt shingle roofs, especially in colder climates. Ice dams form when heat from the home melts snow on the roof, causing water to run down and refreeze at the roof's edge, creating a dam that traps additional water. This can lead to leaks, water damage, and even roof collapse if left unchecked.
The main causes of ice dams are poor attic insulation, inadequate ventilation, and heat loss from the home. Symptoms include icicles forming along the roof's edge, water stains on the interior walls or ceilings, and visible ice buildup on the roof. Solutions can range from DIY measures like improving insulation and ventilation to calling a professional roofer to address more complex issues.