How High Should Chimney Be Above Roof Peak

For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m.

How high should chimney be above roof peak.

And at least 2 higher than any portion of a building within 10. They intend to make sure that the chimney draws properly and that a fire hazard does not occur. Specifications aren t there to merely cause you problems. If your peak to penetration distance is 7 feet you would have a rise of 28 inches.

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. Explained the chimney pipe must be a minimum of three feet above the roof but also two feet taller than anything within ten feet. If the pipe is farther than 10 feet from the roof peak it must be 2. For larger structures the result will depend on the roof pitch.

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. In that case the chimney needs to be 2 above the peak of the roof or 3 above the roof line whichever is higher. This rule refers to the proper height of the chimney pipe above the roof. 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.

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. Minimum three feet above the high side of the roof at least two feet taller than anything within ten feet. This reduces the actual required height by 12 inches from our previous calculation of 64 inches. This specification makes sure steep roof slopes are cleared.

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 10 foot rule explains the clearance you need. So 28 inches plus 24 inches is a chimney height of only 52 inches.