The minimum chimney heights above roof are in the article above.
Wood burning stove flue height above flat roof.
Chimney height may need to be increased by 2 3 per 1000 feet of elevation although added height generally equates to stronger draft there is a point where the system can become too long and over drafting might occur causing increased fuel consumption hotter burn temperatures and damage to your appliance.
If the pitch of the roof is 38 degrees or greater the termination point of the flue or chimney will need to be 2300mm horizontally from the roof line and roofing material.
If the pipe is farther than 10 feet from the roof.
If the flue exits the roof further down then it must extend high enough to acheive 2 3m of horizontal clearance.
The concrete blocks have an integral narrow rectangular flue way.
They must not be used on a wood burning or multi fuel appliance under any circumstance.
What is the minimum chimney height up through a flat roof near two windows.
They are of the same modular size as a masonry building block and are usually designed so that.
Gas flue blocks have been specifically designed for use with gas effect fires.
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.
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.
What is the minimum height clearance needed for a wood burning stove pipe when exiting a flat roof.
Now for the math lesson.
How high does the flue have to go.
Degrees the height of flue or chimney stack will need to be at least 1800mm above the roof when not close to the ridge.
The minimum chimney height recommended for minimum performance of wood burning and multi fuel appliances is 4 5 m from the top of the appliance to the top of the chimney.