Officials say heavy loads of ice and snow on roofs from winter storms can create serious problems including roof collapse or injuries from snow and ice falling from sloped roofs. Ice dams that form on the edges of roofs and in gutters can cause additional damage. Accumulated snow on roofs will only get heavier when melting snow refreezes and turns into ice. Warning signs of excessive snow and ice buildup on your roof are: a sagging ridgeline, drooping ceilings, water leaks on interior walls and ceilings, jammed doors, cracked interior walls near the center of the house and creaking sounds. Officials say personal safety is paramount and property owners should contact professionals to clear ice dams and snow from roofs.