Installing Vent Pipe Roof Flashing

Be sure to clean the outside of the pipe from old caulk that could be in the way of the flashing.

Installing vent pipe roof flashing.

Roofing nails per side photo 2. The traditional pipe flashing is a soldered lead riser pipe that encloses the vent pipe and folds in the pipe at the top. Apply the last row of shingles that is just below the vent pipe as shown in figure 1. Remove the old and clean the pipe.

It s soldered to a roof flange that layers into the shingles. Figure 1 install shingles just below vent pipe. The metal flashing must overlap the material not the other way around. These need to be fabricated or ordered to match a specific roof pitch and pipe diameter.

How to install flashing around a vent pipe five steps to replace a vent pipe flashing 1. When you install roof flashing you will need to use a sealant. Now that the old flashing is gone you can slide the new flashing over the pipe vent and maneuver it under the shingles above the pipe. Slide the new flashing over the vent pipe and under the shingles above the pipe.

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. Put one nail in the bottom edge with a dab of caulk under it to seal the. Use one roofing nail in each corner of the flashing to secure it to the roof. 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.

Continue the next row of shingles cutting a hole for the vent pipe. Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place. While roofing professionals occasionally use nails when flashing they must choose whether to nail to the roof plane or the vertical wall. Apply the roofing felt on the roof cutting a hole for the vent pipe.

Next place your vent flashing on top of the membrane. Carefully remove all the shingles from the flashing. If nailed to both the flashing may deform under the pressure from shifting brick or wood. 1 remove nails holding down shingles above the pip.

Add a large bead of caulk in a half moon shape around the flashing and put the shingles back in place.