If the pipe is farther than 10 feet from the roof.
How tall chimney above roof line.
In the case of stainless steel system chimneys the manufacturer s installation instructions should be consulted.
Prompted by a question from a csia certified chimney sweep ashley eldridge in his 21st year as the chimney safety institute director of education talks ab.
This is a bit of an odd measurement and chimney clearance case because the chimney side is actually about 8 away from the roof edge.
This means that below 38 degree roof pitches that the height of the flue outlet should be at least 1800mm above the roof when not close to the ridge and above 38 degree roof pitches the flue outlet height should be 2300mm horizontally back to the roof flue height figures are given in the table above where the flue is not close to the ridge.
Pushing gently on a tall flue like this should not produce easy movement.
Bottom line the height.
For the next example you have a shorter chimney height.
A 20 foot tall chimney draws twice as well as a ten foot tall chimney.
So 28 inches plus 24 inches is a chimney height of only 52 inches.
The chimney in our photo above left rocked and nearly fell over when we leaned on it a bit while climbing onto this roof.
The maximum freestanding stack height above the roof for a traditional masonry chimney is 4 5 times the narrowest horizontal part of the chimney.
This will generally cause you fewer problems as a homeowner.
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.
Inside the flue each cubic foot of which is lighter than a cubic foot of cooler ambient air.
However in most cases it will be around 3 metres.
Per the 10 and 2 rule once you are at the level of the peak you only need to be 2 feet above it.
Code requires that a chimney be three feet above the roof where it exits and two feet higher than any part of the roof within ten feet.
The height of the chimney above the roof surface measured at the up slope side of the chimney from the roof surface to the chimney top should be at least three feet the green line in our photo.
If your peak to penetration distance is 7 feet you would have a rise of 28 inches.
For most small structures like small cabins and tiny homes the tallest part of the structure is within 10 of the chimney.
What is the 2 foot 10 foot 3 foot rule.
The chimney opening above the roof of a sticks and bricks house should be 3 feet above the roof line or 2 feet above any part of the building within 10 whichever is higher.
