Roof to wall intersections and pipe collars are probably the two most common locations. What is the height and pitch of the roof? I don't suggest hitting the roof with a bunch of water unless you kn ... read more
Michael,
Eric pretty much nailed it.
It is not usually worth it in my opinion and especially given the nature of most leaks and the condition of most sheathing.
Roofs aren't cheap so I think the mat ... read more