The answer to 'roof vent ice dams' is that roof vent ice dams are a common problem caused by improper ventilation or insulation in the attic. They occur when warm air from the home escapes through the roof vents, causing snow and ice to build up around the vents. This can lead to water damage, leaks, and even structural problems if left unchecked.
The main symptoms of roof vent ice dams include visible icicles or ice buildup around the vents, water stains or leaks in the home's interior, and potential roof damage from the weight of the ice. To solve this issue, homeowners can try improving attic insulation, ensuring proper ventilation, and clearing snow and ice buildup around the vents. However, in some cases, it may be necessary to call a professional roofing contractor to properly diagnose and address the problem.