Match the vent pipe to the furnace maker s recommendations either sheet metal or vinyl.
Furnace flue height above roof.
Well making sure that you choose the right venting style will protect them.
Feet 1524 mm in vertical height above the highest connected appliance draft hood or flue collar.
This was 14 inches on the northwest side of the home.
The different types of venting.
The top of the flue opening should be 3 ft 0 92 m above any roof surface.
The top of the chimney should be at least two feet above anything within a ten foot radius of the chimney.
As a rule of thumb is there a min height requirement above grade in areas with heavy snow fall.
If the pipe is farther than 10 feet from the roof peak it must be 2.
Nfpa54 12 7 2 2 802 6 2 2 type b w vents.
This is for masonry chimneys.
When we are talking about gas furnace vent pipe code we need to talk about the different types of the vents first after all you want to keep your family safe from harm.
For a gas vent or type l vent this height must be 2 ft 0 61m or more.
2 above the roof.
A type b w gas vent shall terminate not less than 12 feet in.
Most wood stove and factory built fireplace manufacturers and local building codes will require that the chimney must extend at least 2 feet above any portion of any structure within 10 feet measured horizontally and must extend at least 3 feet above the highest point of its roof penetration.
See the detailed b vent chimney rooftop clearance table below.
Chimney chimney flue must terminate min.
Height of furnace vent above grade this is an exhaust vent for a high efficiency furnace.
Except for flat and very low slope roofs such as those listed in the table below b vents should be at least two feet above the roof surface as well.
Run the vent pipe up through the roof and install a metal or pvc flashing collar over it.
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.
2 higher than building withing 10.
Chimney chimney flue must terminate min.