How To Replace Metal Roof Vent

Record those measurements on a notepad.

How to replace metal roof vent.

Drive the forks of the bar beneath the heads of screws. Remove the metal straps that secure the upper and lower portions of the vent pipe to the roof and ceiling framing with a nail bar and hammer. This is a common area of any roof where the majority of leaks come from so its always good to know how to repair it when necessary. Remove any roofing nails and slide out the shingles.

Nail the lower corners with roofing nails and tar the heads. Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof. The lower half of the flange sits on top of the shingles. Center the pipe in the flashing and push the flexible front corners up or down so that the flashing pipe is parallel to the vent pipe.

Measure the body of the vent. How to replace a pipe boot on a metal roof. Carefully pry up the shingles around the roof jack using a flat pry bar. Apply silicone caulking around the area where the vent pipe penetrates the roof.

Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Apply a bead of asphalt roof cement on the bottom of the vent. Roof boots are built to maintain their water tight seal even in the most extreme weather conditions. Most metal shingles will be attached to the roof using metal shingle.

Using the tape measure determine the size of the cut into the roof that will be necessary to insert the vent into the space. However over time they will begin to tear and gap. Insert the roofing membrane with the backing removed through the pipe. Remember to allow for the lip on the vent mechanism that will fit over the opening and rest on the surface of the roof.

Pry up the old jack and remove it by pulling it up over the vent pipe. They are designed to keep water from entering the building by creating a water tight seal around the pipe. Most times roof boots are built into the flashing that covers pipe vents. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.

Choosing a whole house fan. Slide the new flashing over the vent pipe and under the shingles above the pipe. Slide the vent under the shingles so they cover the top half of the vent flange. Slide a new roof jack sized to fit your vent pipe over the pipe.