Replace Vent Pipe Through Roof

Always replace a gas furnace s roof vent with a compatible flue pipe storm collar and termination cap.

Replace vent pipe through roof.

Slide the new flashing over the vent pipe and under the shingles above the pipe. See below for a shopping list and tools subscribe to. It channels the exhaust gases to the vent and helps maintain proper atmospheric pressure in the waste system. The vent stack is the pipe leading to the main roof vent.

Water and waste head down the pipe while gasses are vented up and outwards. This old house general contractor tom silva shows how to create a watertight seal around a vent pipe. The plumber made the inside connections later and either didn t have a 3 in to 4 in. Coupling handy or didn t want the hassle of making a proper connection.

This type of flashing is common and inexpensive for the contractor to install because one flashing unit can fit pipes from 1 1 2 inches wide to 3 inches wide and there is no custom work needed to size the flashing. Pipe through the roof sheathing before the roofers came so they could flash the vent into the shingles. It is a vertical pipe attached to a drain line and runs through the roof of your home. Vent pipes provide this air by running outside the structure of the house.

Plumbing vent pipes are connected to your drain system and are needed for water to drain properly. Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof. Running a vent pipe out of the roof takes some careful preparation. Most newer homes will have a flexible vent pipe flashing that is made of aluminum and a rubber seal that the pipe passes through.

However our best guess is that the plumber stuck a 4 in. Step 1 remove the screws holding the termination cap on the end of the vent pipe using the correct size screwdriver to turn the screws counterclockwise. 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. The stack pipe leads the whole way out through your roof and further underground in the opposite direction to main sewer lines.

To replace a pipe vent boot completely requires that a few shingles be removed on the upper side of the boot so that the old nailing flange of the vent boot can be removed and replaced with a new.