If chimney is more than 4 above the roof penetration an extended roof bracket is required.
How high above hip roof should duravent stove pipe be.
To calculate the installed per length of 6 8 duraplus chimney pipe subtract 1 1 2 per joint.
Currently the pipe is 6 inches above the roof peak.
Vertical blue line along the left side of the chimney in our photo.
Subtract 1 1 4 per joint of durablack stovepipe.
Measure the roof pitch.
For horizontal installations check the appliance manufacturer s instructions for minimum rise and maximum horizontal run.
This will bring the total height of the pipe not including the cap to 85 inches.
This specification makes sure steep roof slopes are cleared.
Building codes require a minimum of 3 above the roof penetration and at least 2 higher than any portion of a building within 10.
The top of the chimney should be at least 3 ft 0 92 m above the roof surface.
Roof pitch is easily calculated and if you don t know how read my article understanding and calculating roof pitch.
For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m.
The termination cap is installed above this point.
A snorkel termination may be used if height restrictions prevent adequate rise above the appliance.
Select the proper flashing and storm collar.
Hopefully this will be enough.
Distance matters 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.
If the pipe is farther than 10 feet from the roof peak.
In the photo below you can see where the braces currently attach 41 inches above the collar.
Subtract 1 1 2 per joint of dvl stovepipe.
Measure the roof pitch.
If the chimney extends more than 5 above the roofline an extended roof bracket must be installed at every 5 increment of chimney height above the roofline leaving no more than 5 of chimney extending above the last pipe bracket.
Also you ll need the horizontal distance between the peak and the edge of the high side of the pipe see figure 1 where you plan your roof penetration.
The extended roof bracket consists of the pipe band the adjustable legs and the roof brackets.
Minimum chimney height at sea level of straight vertical chimney is 10 to 15 above the appliance outlet.
The termination cap is installed above that point.
Determine the minimum height above the roof.
