The answer to 'why is my drip edge ice dams' is that ice dams can form along the drip edge of your roof, causing water to back up and potentially leak into your home. This is often caused by poor insulation or ventilation in the attic, which allows heat to escape and melt snow on the roof. As the melted snow refreezes at the roof's edge, it creates a dam that traps additional water.
Some common symptoms of this issue include icicles forming along the gutters, water stains on the ceiling or walls, and damage to the roof or interior of the home. Addressing the root cause by improving insulation and ventilation is usually the best solution, but you may also need to remove the ice dam manually or install a heated cable system to prevent future issues. If the problem persists or you're unsure of the cause, it's best to call a professional roofer to inspect and recommend the appropriate repairs.