How Far Above Roof Should Chimney Be

Explained the chimney pipe must be a minimum of three feet above the roof but also two feet taller than anything within ten feet.

How far above roof should chimney be.

For most small structures like small cabins and tiny homes the tallest part of the structure is within 10 of the chimney. They intend to make sure that the chimney draws properly and that a fire hazard does not occur. This rule refers to the proper height of the chimney pipe above the roof. The 10 foot rule explains the clearance you need.

For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m. If the pipe is farther than 10 feet from the roof peak. Vertical blue line along the left side of the chimney in our photo. The top of the chimney should be at least 3 ft 0 92 m above the roof surface.

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 the chimney should be at least two feet higher than a level point ten feet away from a level line to the roof. Specifications aren t there to merely cause you problems. If you ve been researching class a chimney pipes you ve probably heard of the 3 2 10 foot rule numerous times.

Distance matters 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. And at least 2 higher than any portion of a building within 10. The chimney must extend at least 3 above the highest point where it passes through a roof.