Furnace Vent Pipe Through Metal Roof

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Furnace vent pipe through metal roof.

It s made of zinc coated galvanized steel for durability and reliability. This home has a gas furnace with a vent pipe through the roof. The vent pipe is about 8 10 in diameter. I am installing a new roof on an existing home.

When the vent is withdrawing air from the house it expels the gas outside through the vent. What would be the best way to flash around this vent. However these combustion gases contain residual heat that is lost through the ventilation. Also known as the type b this vent is operating on the natural air convection.

Below are some links to the tools i used on this project. The master flow 6 in. This is how i installed my dwv drain waste vent pipe through my metal roof. For pricing and availability.

The exhaust system typically uses metal venting often routed into a chimney stack to exhaust the combustion gases created in the furnace fire chamber. The furnace uses an exhaust vent motor that pushes the exhaust gas through the vent pipe creating a positive static pressure in the vent. Oatey 1 1 2 in to 3 in x 15 in plastic vent and pipe flashing. Goose neck vent in black can be used to cover exhaust pipes extending through your roof or for attic ventilation.

You can capture that heat with a high efficiency condensing furnace. 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. The steel roofing is r panel profile. 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.

Goose neck vent the master flow 6 in. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner. Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl. Oatey retro master roof flashing 1 4 in to 4 in x 8 in epdm rubber vent and pipe flashing.

The condensing furnace produces condensed exhaust gases that contain water and carbon dioxide which together form carbonic acid that results in a corrosive condensate. If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof. 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.