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.
Minimu chimney height above flat roof.
Per the 10 and 2 rule once you are at the level of the peak you only need to be 2 feet above it.
Brickwork heavyweight concrete block and so on where.
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.
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.
What is the 2 foot 10 foot 3 foot rule.
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.
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.
The chimney must extend at least 3 above the highest point where it passes through a roof.
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.
If the pipe is farther than 10 feet from the roof.
Diagram 2 shows the area on a traditionally constructed non flammable material roof where the flue must not terminate.
The distance between the cowl of the flue and the adjacent roof wall structure should be higher than 2 3 mtr.
The minimum chimney heights above roof are in the article above.
The flue or chimney outlet must be above and outside of the shaded area.
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.
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.
Positing a chimney on the home relative to the rest of the home may cause it to draw better.
Chimney heights and termination.
The 10 foot rule explains the clearance you need.
For the next example you have a shorter chimney height.
This will generally cause you fewer problems as a homeowner.
How far from a window must the chimney cowl be in the u k.
Both above the flat roof and 2 feet above the point at which a horizontal line from the chimney would touch the highest portion of the nearest 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.
