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 ...

Have you ever heard a contractor or other DIYer talk about "flashing" and wondered what they mean? Or maybe you've got a rough idea but need clarification on the number of flashing types available.