This fits the new boot around the vent pipe properly just a bit higher than the old one and the new boot and piece of jack acts as a skirt over the old one and can be pop riveted on to keep it from lifting off in wind.
Installing roof pipe boot.
The metal i m using is called crinkle black i purchased all my materials at h.
See other blogs for a proprietary vent flashing repair kit and a repair using a boot flashing with the roof pan trimmed off.
In this video i cover installing a roof boot for a vent pipe in a metal roof.
Patented and proven both systems form a weathertight seal for vent pipe penetrations and utilizes three independent gasket systems which are designed to work in conjunction with each other.
The slope of the flashing can be microadjusted by pinching or pressing the two downslope corners.
I ve used this repair on several roofs over the years.
Quarrix pipe boot photo by quarrix.
Quarrix pipe boots cost between 20 and 30.
In simplest terms a new vent pipe boot flashing is slid over the top of the existing one and the top edge of the pan is lapped beneath the overlying shingle course.
The pipe boots are available in two roof pitch ranges 3 12 to 8 12 and 8 12 to 14 12 and pipe diameters from 1 1 2 in.