Furnace Vent Height Above Roof

Per the 10 and 2 rule once you are at the level of the peak you only need to be 2 feet above it.

Furnace vent height above roof.

Exhaust vents must be protected against rain and equipped with back flow prevention features e g flap dampers. 1 5 feet above the roof surface. Gas vents that are 12 inches 305 mm or less in size and located not less than 8 feet 2438 mm from a vertical wall or similar obstruction shall terminate above the roof in accordance with figure 802 6 2 and table 802 6 2 gas vents that are over 12 inches 305 mm in size or are located less than 8 feet 2438 mm from a. In all areas exhaust vents should be at least 1 foot above roof surface.

Above the roof surface with a listed cap or listed roof assembly. This reduces the actual required height by 12 inches from our previous calculation of 64 inches. Exhaust vents must not be allowed to be obscured or hidden by vegetation. 1 0 foot above the roof surface 1 7 12 to 8 12.

2 0 feet above the roof surface. Roof pitch rise run in inches. Chimney chimney flue must terminate min. Run the vent pipe up through the roof and install a metal or pvc flashing collar over it.

Minimum height above the roof surface 1 flat to 7 12. A gas vent shall terminate in accordance with one of the following. 2 5 feet above the roof surface. This structure generally uses the furnace vent pipe through roofbecause the b venting pipe is designed in vertical manner.

5 above the flue collar e g. Please note that this rule doesn t generally apply to pellet and gas vent systems. Water heater installed close to the roof framing would need at least 5 long vertical vent pipe single wall vent pipe requires minimum 6 of clearance to combustible materials general rule the chimney should not be outside a window or other house opening. Also known as the type b this vent is operating on the natural air convection.

So 28 inches plus 24 inches is a chimney height of only 52 inches. Vegetation must not be allowed to grow within 3 feet of an exhaust vent. When the vent is withdrawing air from the house it expels the gas outside through the vent.