What is a potential consequence of ice dams on a roof?

Ice dams can create significant issues for roofs and the structures beneath them, particularly when it comes to water damage. When snow on the roof melts due to rising temperatures, the water can flow down to the eaves, which are often cooler. When this occurs, the water can refreeze, forming an ice dam that prevents further drainage. As more water accumulates behind the ice dam, it can seep under the roof shingles and into the house.

The consequence of this situation manifests most critically at interior wall and ceiling intersections. As water penetrates through the roof, it can saturate the insulation and materials within the walls and ceilings. Over time, this leads to paint bubbling, drywall deterioration, and potential mold growth, which can compromise the structural integrity of the home and lead to costly repairs. This highlights the seriousness of ice dam formation, making it vital for homeowners and inspectors to recognize the signs and address the underlying issues that lead to their formation.