The white pipe sticking up out of the roof is a plumbing vent. The rubber boot at the base of the plumbing vent is part of the flashing kit for this vent, and the boot has dried out and split. Here's ...
Sub-Zero Temps, Plumbing Vents Frosted Shut When there's a long period of sub-zero temperatures in Minnesota, plumbing vents often stop working. The problem is that plumbing vents can get completely ...
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