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.
Minimu chimney height above flat roof.
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.
Brickwork heavyweight concrete block and so on where.
The flue or chimney outlet must be above and outside of the shaded area.
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.
On a flat roof may not be tall enough.
If your peak to penetration distance is 7 feet you would have a rise of 28 inches.
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.
Chimney heights and termination.
Diagram 2 shows the area on a traditionally constructed non flammable material roof where the flue must not terminate.
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.
The minimum chimney heights above roof are in the article above.
Per the 10 and 2 rule once you are at the level of the peak you only need to be 2 feet above it.
How far from a window must the chimney cowl be in the u k.
The chimney must extend at least 3 above the highest point where it passes through a roof.
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 distance between the cowl of the flue and the adjacent roof wall structure should be higher than 2 3 mtr.
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.
For the next example you have a shorter chimney height.
So 28 inches plus 24 inches is a chimney height of only 52 inches.
If the pipe is farther than 10 feet from the roof.
The 10 foot rule explains the clearance you need.
This will generally cause you fewer problems as a homeowner.
