Anon the chimney outlet needs to not only be proper height above the roof surface but proper distance from any opening that could take flue exhaust.
Minimu chimney height above flat roof.
On a flat roof may not be tall enough.
The current code states that chimney openings need to be at least 300mm higher than the highest part of any roof within 3 6 metres of the chimney.
The flue or chimney outlet must be above and outside of the shaded area.
What is the 2 foot 10 foot 3 foot rule.
If the chimney or flue exits the roof within 600mm horizontally of the ridge then the flue or chimney should be a minimum of 600mm above the ridge.
The 10 foot rule explains the clearance you need.
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.
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.
The distance between the cowl of the flue and the adjacent roof wall structure should be higher than 2 3 mtr.
Chimney heights and termination.
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.
The minimum chimney heights above roof are in the article above.
Positing a chimney on the home relative to the rest of the home may cause it to draw better.
When a chimney is not adequately supported by ties or securely restrained in any way its height h when measured from the highest point of intersection with the roof surface gutter and so on should not exceed 4 5w provided the density of the masonry is greater than 1500 kg m 3 that is.
If your peak to penetration distance is 7 feet you would have a rise of 28 inches.
Brickwork heavyweight concrete block and so on where.
So 28 inches plus 24 inches is a chimney height of only 52 inches.
Chimney height regulations chimneys need to be high enough to ensure that smoke is directed away from where it might be harmful to your neighbours.
For the case you describe there are other distances like from windows and depending on the total chimney height even meeting the above roof minimum distance 3 ft.
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 chimney must extend at least 3 above the highest point where it passes through a roof.
How far from a window must the chimney cowl be in the u k.
