underside of the roof causing snow and ice on the roof to melt. the melted water will drain along the roof, under the snow, until it reaches the cold overhang. the overhang tends to be at the same temperature as the outdoors and the melted water will refreeze and form an ice dam and icicles. the ice dam can cause damage to the roof, which will result in water leaks to the inside.
ice dams that do result in water damage to a home or building often leave behind more than just water stains on ceilings and walls, this moisture can also result in mold growth. even if the mold is 