Message Board Thread - "Ice Dams"

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Ice Dams BrendonP25 1/7/2009
Does anybody know if it is possible to detect ice dams with the infrared camera? If so what is a good technique to use and what kind of thermal signature should I be looking for?
Re:Ice Dams Weatherization guy 1/8/2009
Your best thermal signature will be the melting on the roof on a frosty morning or a light snow.
As far as IR signature, I would say alot of mottling of the image on the slope ceiling or flat ceiling inside. Although to get a real good idea of issues, look with IR, then set up a blower door to simulate wind and look at the effect it has on the performance of theinsulation. See the pic below which was under -25 pa with blower door.

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