This doesn t necessarily mean the pipe must be above the tallest part of the roof which is known as the ridge.
Images of chimney hieght above the roof.
If the pipe is farther than 10 feet from the roof.
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 will generally cause you fewer problems as a homeowner.
The chimney must extend at least 3 above the highest point where it passes through a roof.
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.
Easy calculation for chimney pipe height.
In that case the chimney needs to be 2 above the peak of the roof or 3 above the roof line whichever is higher.
For larger structures the result will depend on the roof pitch.
Positing a chimney on the home relative to the rest of the home may cause it to draw better.
Knowing the pitch of the roof is extremely helpful in determining the height the chimney pipe must be above the roof.
What is the 2 foot 10 foot 3 foot rule.
For a building with flat or shallow pitched roof the chimney needs to be 3 feet above the point where it passes the roof line.
But the pipe will require a 10 horizontal clearance from the roof.
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.