Gas Flue Roof Vent On Metal Roof

The airspace between the inner and the outer pipes provides insulation against heat loss to keep the warmer flue gases on the rise.

Gas flue roof vent on metal roof. I am installing a new roof on an existing home. It s made of zinc coated galvanized steel for durability and reliability. Goose neck vent the master flow 4 in. This article series describes b vent metal chimneys used for gas fired appliances.

Amerivent type b gas vent uses a double wall of metal pipe for insulation and safety. This home has a gas furnace with a vent pipe through the roof. Use your feet to flatten the flashing down over the contour of the roof. We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys.

Metal b vent chimney clearance distances above and on the roof. Given the most common causes is cracked or damaged rubber boot the most ideal solution is to remove it and replaced it with a new one. The inner pipe of reflecting aluminum heats quickly containing the warm flue gases inside. After screwing it down securely do another bead of silicone around the edge also put some silicone on all the screws as well.

This vent is designed to be used on 4 in. Screw it down in a way that its fits tight over the humps of the metal roof. What would be the best way to flash around this vent. When the roof vent is leaking the actual cause must be identified first.

Use your finger or a tool to smooth the silicone around. Goose neck vent in black can be used to cover exhaust pipes extending through your roof or for attic ventilation. The master flow 4 in. The steel roofing is r panel profile.