![](http://www.alamy.com/thumbs/6/FF2D5B9A-BAC0-4FBA-B9E0-AD891B59A692/2F4N1K2.jpg)
If you see icicles hanging from the edge of a roof, it may be a sign of an ice dam. An ice dam is a ridge of ice that forms along the edge of a roof.
Size: 4928px × 3264px
Photo credit: © Manfred Glueck / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: -slope, attic, avoid, cold, dam, damage, dams, edge, flat, form, gutters, hanging, heat, heavy, ice, icicles, keeping, melt, meltwater, national, prevent, remove, roof, roofs, service, snow, snowfall, suggests, ventilated, weather