How To Replace A Roof Vent Flashing

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.

How to replace a roof vent flashing.

Roof vent flashing is fairly easy to install as long as you are comfortable with heights and the idea of getting on your roof to finish the installation doesn t scare you too much. Pull or cut off any nails. Position a new vent pipe flashing over the vent push it down into place and nail where shingles will cover it. If you have a leak in the general area of a plumbing vent check the condition of the vent flashing.

I ve used this repair on several roofs over the years. Roof vent flashing is a necessary component of your roof structure. See other blogs for a proprietary vent flashing repair kit and a repair using a boot flashing with the roof pan trimmed off. The main reason homeowners choose to install or replace the vent pipe flashing on their roof is to stop or prevent leaks which may also help extend the lifespan of the roof.

Even if your roof is functioning the way it should be it s a good idea to keep vent pipe flashing in your home. Open valleys have metal flashing to protect this critical area of the roof. To replace flashing around the vent pipe first remove the shingles covering the flange at the back and sides. Purchase the necessary supplies.

If you have the right materials you ll be able to repair your. Pry and lift off the flashing. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. Look for rust holes or gaps around metal vents required for cast iron waste lines.

When you reach the vent pipe you then insert a vent pipe flashing and continue adding shingles around and above it as normal. Over time the flashing around plumbing vents can rust or deteriorate and it will need to be replaced. Plumbing vent flashings are notorious spots for roof leaks. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.

It prevents the accumulation of moisture and rain in and around the vent. Follow these steps if you need to do repairs.