After talking with a support person I installed a single run up one valley to the peak and down the other. Weāve only has a couple of snow falls but so far it appears to be doing the job of preventing ice build up. The heat cables are well made and look like they will stand up in a harsh Canadian winter. Finally a system that will work on a steel roof. Friendly and helpful people to deal with. A little pricy but well worth it with the warranty. Satisfied so far.
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