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ice damming prevention

 
John C Daley
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 have learned from another Permie the issue of ice damming  and the destruction it causes.
I was discussing a gutter system to catch rainwater and Catie explained the ice damming issue can wreck everything .
It was a shock to me.
But I found this comany that creates a hot edge and wondered if anybody knew about it?
hot edge
They have treatments for different types of roofing.

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R Scott
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There are many such systems, but most are not much more than heat tape and a few clips to hold it. Earthships in the high desert do this, as much of their water comes as snow and will sublimate in the sun and not make it to the cistern without the melting system.

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Mike Haasl
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As I understand it, ice dams are primarily caused by air leaks from the house up into the attic that warm the roof deck and melt snow.  That snow melt runs down the roof until it hits a colder section of the roof deck, typically over the eaves.  There it freezes, forming a dam.  

So you can yell at your roofer all you want but the problem stems from a lack of good air sealing between the house and the attic.  Or heat from other hot things in the attic like a chimney or heating unit.

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All that thinking. Doesn't it hurt? What do you think about this tiny ad?
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