weatherize: Preventing Ice Dams - 01/16/09 12:29 AM
Preventing Ice Dams

What is an Ice Dam?
Generally deeper snow and colder temperatures increase the formation of ice dams. An ice dam is an accumulation of ice that builds up along the edge of a roof. The eavestrough may be overflowing with ice and there may be icicles hanging from the edge.
What causes an ice dam?
Snow build up effectively acts as an insulator on the roof. Heat from the attic warms the underside of the snow and melts the bottom layer. This water then runs under the snow cover and down the roof until it hits a … (0 comments)


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