Coupling handy or didn t want the hassle of making a proper connection.
Replace vent pipe through roof.
Always replace a gas furnace s roof vent with a compatible flue pipe storm collar and termination cap.
However our best guess is that the plumber stuck a 4 in.
The stack also allows fresh air in to keep water running smoothly through your piping.
Pull the old flashing up over the vent pipe and scrape any old caulk and debris off the roof.
The vent stack is the pipe leading to the main roof vent.
The stack pipe leads the whole way out through your roof and further underground in the opposite direction to main sewer lines.
It channels the exhaust gases to the vent and helps maintain proper atmospheric pressure in the waste system.
The plumber made the inside connections later and either didn t have a 3 in to 4 in.
Why plumbing air vents are important.
When water drains air must replace the space that was taken up by the water.
It is a vertical pipe attached to a drain line and runs through the roof of your home.
Plumbing vent pipes are connected to your drain system and are needed for water to drain properly.
Running a vent pipe out of the roof takes some careful preparation.
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.
Most newer homes will have a flexible vent pipe flashing that is made of aluminum and a rubber seal that the pipe passes through.
Water and waste head down the pipe while gasses are vented up and outwards.
See below for a shopping list and tools subscribe to.
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.
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.
This old house general contractor tom silva shows how to create a watertight seal around a vent pipe.
