
December 2010 set records for snowfall in Central New York. Along with lake effect snows, there have been periods of thawing and refreezing causing problems for homeowners by creating ice dams - ridges of ice that prevent melting water from draining off the roof. Ice dams cause water ponds on roofs which can back up under shingles, seep into insulation and leak into the attic or along exterior walls. This water infiltration can lead to mold, mildew, interior wall/ceiling damage and rot.