| 21. | Then at night a cold snap freezes this water, forming the ice dam.
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| 22. | The lake was held back by an ice dam of the remaining glacier.
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| 23. | The term " ice dam " has three meanings ( others discussed below ).
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| 24. | And, it causes ice dams on a few unfortunate abodes.
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| 25. | Ice dams can form when snow collects on the roof.
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| 26. | Most insurance policies cover backups from ice dams, insurers say.
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| 27. | An Ice & Water shield does not prevent ice dams.
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| 28. | They were often caused by ice dams blocking the river.
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| 29. | Since ice dams often form under the snow, they are sometimes difficult to spot.
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| 30. | They are on the roof in an attempt to stop leaks from ice dams.
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