By Joe Hurst-Wajszczuk of “This Old House” magazine
Take care of trouble spots and you will enjoy a winter free of icicles – and the damage they can do to your roof.
Dam Busters
Stopping ice dams is simple, in principle: Just keep the entire roof the same temperature as the eaves. You do that by increasing ventilation, adding insulation, and sealing off every possible air leak that might warm the underside of the roof, as shown in the illustration below. By taking care of these trouble spots, listed here in order of priority, you should enjoy a winter free of dams and use less energy to boot.
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