Icicles Can Be a Clue
The size of these icicles can indicate that the ice dam is progressing significantly. This attic needs an air seal and insulation upgrade.
Ice Damming Effects on Gutters
When the water is forced to drain behind the gutter, it may start to freeze on the siding or the downspout. The ice buildup continues and causes a domino effect of damage!
Ice Dam
In this example you can see where the ice dam is causing the water drainage to back up, starting to re-freeze, putting the roof shingles in danger of damage and leaking.
Icicles
More examples of icicles from ice damming.
Icicles Can Be Dangerous
Sometimes icicles can grow to become safety hazards. In this case, they can cause slippery stairs or injury if they break and land on a person below.
Ice on the Siding
The iced damming on this house has progressed to the point where the water is draining behind the gutters and forming ice on the side of the house.
Basement Flooding
When the gutters are blocked by ice dams and cannot drain properly, the water can discharge and collect right by the foundation and can then sometimes find it's way into the basement!