The answer to 'why is my fascia ice dams' is that ice dams are a common problem that can form on the fascia, the board that runs along the edge of your roof. Ice dams occur when snow on your roof melts due to heat from your home, then refreezes at the roof's edge, creating a barrier that traps more water and ice. This can lead to water damage, leaks, and other issues.
Some common causes of fascia ice dams include poor insulation in your attic, inadequate ventilation, and heavy snowfall. Symptoms include icicles hanging from the fascia, water stains or damage on the exterior walls, and pooling water on the roof. To solve the problem, you may need to improve insulation, add ventilation, or remove snow and ice buildup regularly. In some cases, you may need to call a professional roofer to properly address the issue.