Chimney clearance from combustible material is a minimum of 2 in.
Images of chimney height above the roof.
If the pipe is farther than 10 feet from the roof.
Positing a chimney on the home relative to the rest of the home may cause it to draw better.
Easy calculation for chimney pipe height.
Knowing the pitch of the roof is extremely helpful in determining the height the chimney pipe must be above the roof.
This doesn t necessarily mean the pipe must be above the tallest part of the roof which is known as the ridge.
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.
For most small structures like small cabins and tiny homes the tallest part of the structure is within 10 of the chimney.
Tom if you are saying that your metal chimney height extends un supported six feet above a roof surface then imo it ought to be braced.
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.
Typical metal chimney instructions specify that if the free standing chimney height is over 5 feet then support brackets are.
This q a were posted originally at chimney height clearance code faqs 5.
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.
What is the 2 foot 10 foot 3 foot rule.
For the next example you have a shorter chimney height.
Per the 10 and 2 rule once you are at the level of the peak you only need to be 2 feet above it.
If your peak to penetration distance is 7 feet you would have a rise of 28 inches.
So 28 inches plus 24 inches is a chimney height of only 52 inches.
But the pipe will require a 10 horizontal clearance from the roof.
Also chapter 3 of the inspecting roofing course says it is a common mistake to apply chimney termination height requirements 3 2 10 rule to fuel vents which cause vents to extend above roofs much higher than needed the rules seems conflicting.
The chimney must extend at least 3 above the highest point where it passes through a roof.
One picture shows 3 feet one says 2 feet and the chart shows 1 foot.
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.
