Furnace Vent Pipe Through Metal Roof

I am installing a new roof on an existing home.

Furnace vent pipe through metal roof.

The steel roofing is r panel profile. This home has a gas furnace with a vent pipe through the roof. However these combustion gases contain residual heat that is lost through the ventilation. What would be the best way to flash around this vent.

This vent is designed to be used on 6 in. The master flow 6 in. Also known as the type b this vent is operating on the natural air convection. This is how i installed my dwv drain waste vent pipe through my metal roof.

For pricing and availability. Goose neck vent the master flow 6 in. When the vent is withdrawing air from the house it expels the gas outside through the vent. If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof.

Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it. Below are some links to the tools i used on this project.

The exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber. That s because the combustion byproducts are in a gaseous form so the gases can float up through the flue pipe and out of your roof. Oatey 1 1 2 in to 3 in x 15 in plastic vent and pipe flashing. Oatey retro master roof flashing 1 4 in to 4 in x 8 in epdm rubber vent and pipe flashing.

That depends on whether you have a standard efficiency or a high efficiency furnace. 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. Be sure to subscribe. Goose neck vent in black can be used to cover exhaust pipes extending through your roof or for attic ventilation.

It s made of zinc coated galvanized steel for durability and reliability. The condensing furnace produces condensed exhaust gases that contain water and carbon dioxide which together form carbonic acid that results in a corrosive condensate. The furnace uses an exhaust vent motor that pushes the exhaust gas through the vent pipe creating a positive static pressure in the vent.