Ice dams form across the edge of a roof when hot air in an attic melts snow on the roof and the melting water reaches the edge of the roof, where it is much cooler. Water that hits the dam and has nowhere to go can seep under shingles and cause damage outside and inside a home.
Ice dams form across the edge of a roof when hot air in an attic melts snow on the roof and the melting water reaches the edge of the roof, where it is much cooler. Water that hits the dam and has nowhere to go can seep under shingles and cause damage outside and inside a home. John Sowell jsowell@idahostatesman.com
Ice dams form across the edge of a roof when hot air in an attic melts snow on the roof and the melting water reaches the edge of the roof, where it is much cooler. Water that hits the dam and has nowhere to go can seep under shingles and cause damage outside and inside a home. John Sowell jsowell@idahostatesman.com

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Heads up: All of this Idaho precipitation could damage your roof

January 04, 2017 6:01 PM

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