Hello folks - I'm really hoping someone can help me with this problem I've been trying to solve since last winter. As you can see I from the pictures I had a vertical ice damn being formed by the furnace roof exhaust vent. First I thought it was a roof problem but the roofer of the recently installed roof rightfully pointed out that there is no water leaking even after the heaviest rain. And then we saw theses vertical ice dams. Problem seems to be that none of the HVAC people I've spoken to seem to know how to address this. Two claim its a roof problem, while the last one side I should saw off the exhaust vent so that it is vertical pointing upwards which he feels means there will be nothing dripping out of it and thus no ice dam accumulation... ANY THOUGHTS PLEASE??
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