Quote:
Originally Posted by SIKSUKR
I installed heat tape to a nasty ice dam at my commercial building and found it did nothing after the fact. It made no progress melting through existing ice. Short of chopping the ice, I found the best method was to install a salt sock or a bed of salt to melt through. FWIW.
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When I worked at Lowes for a short time a few years back, the heat tape (wire) packages all said that the problem ice dams needed to be removed before installing the roof heat tape.
That being said, I'm sure a good installer will advise the Professor of the need to clear the ice dams first, and will make sure it is done prior to installation.