How High Should Chimney Be Above Roof Peak

And at least 2 higher than any portion of a building within 10.

How high should chimney be above roof peak. So 28 inches plus 24 inches is a chimney height of only 52 inches. 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. For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m. This rule refers to the proper height of the chimney pipe above the roof.

Specifications aren t there to merely cause you problems. In that case the chimney needs to be 2 above the peak of the roof or 3 above the roof line whichever is higher. They intend to make sure that the chimney draws properly and that a fire hazard does not occur. The 10 foot rule explains the clearance you need.

Minimum three feet above the high side of the roof at least two feet taller than anything within ten feet. Vertical blue line along the left side of the chimney in our photo. For larger structures the result will depend on the roof pitch. This specification makes sure steep roof slopes are cleared.

If the pipe is farther than 10 feet from the roof peak it must be 2. 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. If your peak to penetration distance is 7 feet you would have a rise of 28 inches. 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.

Per the 10 and 2 rule once you are at the level of the peak you only need to be 2 feet above it. This reduces the actual required height by 12 inches from our previous calculation of 64 inches. Explained the chimney pipe must be a minimum of three feet above the roof but also two feet taller than anything within ten feet.