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Sure, they may look pretty, but icicles pose a threat to your porch, your walkway, and even your body if they break and fall. Icicles can also be a sign of a bigger problem known as an ice dam, which occurs when snow and ice build up inside the gutter and overflow, thereby blocking water from draining off the roof. Ice dams can lead to interior leaks and roof damage—all of which are costly to fix. To prevent icicles and ice dams, clear gutters of debris, install additional insulation in the attic and exterior walls, and consider installing heated gutter cables.
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