eHow Of The Day How to Prevent an Ice Dam by Murray Anderson An ice dam is a ridge of ice that forms along the lower edge of a roof and blocks melting water (snow) from running off the roof. Over time, the dam of ice builds up as more and more water freezes and the runoff water pools behind the dam--eventually working its way under the shingles right into the roof structure--and even down into the house. Ice dams are caused by heat loss from the house, so in newer construction with good insulation and proper attic ventilation--ice dams aren't much of a problem. However, in older homes--ice dams remain a constant problem and cause millions of dollars worth of damage in northern climates. Here's how you can prevent an ice dam on your roof.…Keep reading More Like This How to Prevent Ice Damming On Cathedral Roofs How to Prevent Ice Dams How to Prevent Ice Dams in Gutters How to Repair a Roof Ice Dam How to Remove Ice Dams in Gutters New On eHow How to Remove Printing in MapPoint Tips to Decorate a Bedroom With a Feminine Theme How to Remove Mineral Film From Lexan Salton Iced Tea Maker Instructions How to Install the PC Game "Ben 10: Protector of Earth"		Advertisement Featured Member Articles MarlaineMarie from The Universe! wrote: How to Make An Ice Cream Topping That Hardens How to Make More Out Of A Box Of Rice Mix How to Make Perfect Long Cooking Rice You Should Follow Us!