How To Put A Furnace Vent Pipe Through The Roof

Also known as the induced draft fan this one has a fan that is located on the end of the pipe.

How to put a furnace vent pipe through the roof.

With the pipe in a vertical position trace around the pipe using a pencil. Once we had the pipe extension connected we figured out where the new vent pipe would need to pass through the roof using a piece of scrap wood held flush with the pipe. Horizontally through the sidewall or vertically through the roof. Measure the distance from the furnace vent to the chimney.

Push the male end of a new vent pipe up through the bottom of the roof flashing and set its female end on the male end of the vent pipe that connects to the gas furnace. Purchase the correct size metal vent pipe from a home improvement store and make sure you get enough elbow joints to give the vent s path the necessary twists and turns. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it.

Position the vent pipe up to the bottom of the roof. Be sure to like and subscribe in order to help me bring you more helpful videos filled with tips and tricks i ve learned over the years. Go into your attic. Twist the roof s vent pipe clockwise one half turn with one hand while holding the gas furnace s vent pipe still with the other hand.

Where the scrap wood hit the understructure of the roof we drilled a hole straight through to the outside. Use your measurements and plan the path out ahead of time so that you will know exactly how much material you will need. The penetration will be oval to have a round pipe exit vertically through a pitched roof you need an oval hole in the roof. Since the exhaust pipe is running on a sidewall the fan works together with the furnace.