2 0 feet above the roof surface.
Furnace vent height above roof.
Vent caps 12 and smaller may terminate a distance above the roof if 8 feet or more away from a vertical surface as follows.
This reduces the actual required height by 12 inches from our previous calculation of 64 inches.
The top of a chimney pipe must extend at least 2 feet above the peak of the roof if the pipe is within 10 feet of the peak.
Roof pitch rise run in inchesminimum height flat to 7 12 1 0 foot above the roof surface 7 12 to 8 12 1 5 feet above the roof surface 8 12 to 9 12 2 0 feet above the roof surface.
2 5 feet above the roof surface.
1 0 foot above the roof surface 1 7 12 to 8 12.
For oil and wood burning appliances there is a very simple formula that regulates this chimney height requirement it is called 3 foot 2 foot 10 foot rule.
1 5 feet above the roof surface.
Please note that this rule doesn t generally apply to pellet and gas vent systems.
Vents must be tall enough so burned gases exit above a roof line and.
Minimum height above the roof surface 1 flat to 7 12.
So 28 inches plus 24 inches is a chimney height of only 52 inches.
If the pipe is farther than 10 feet from the roof.
All gas furnaces must be vented to allow exhaust gases from the combustion process to escape.
How to vent a furnace in a roof.
Roof pitch rise run in inches.