How Far Above Roof Should Chimney Be

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.

How far above roof should chimney be.

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. If you ve been researching class a chimney pipes you ve probably heard of the 3 2 10 foot rule numerous times. If the pipe is farther than 10 feet from the roof peak. For most small structures like small cabins and tiny homes the tallest part of the structure is within 10 of the chimney.

The top of the chimney should be at least 3 ft 0 92 m above the roof surface. Explained the chimney pipe must be a minimum of three feet above the roof but also two feet taller than anything within ten feet. And at least 2 higher than any portion of a building within 10. For gas vents or a type l vent this distance above the roof surface must be at least 2 ft 0 61m.

The chimney must extend at least 3 above the highest point where it passes through a roof. Specifications aren t there to merely cause you problems. 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.

Most wood stove and factory built fireplace manufacturers and local building codes will require that the chimney must extend at least 2 feet above any portion of any structure within 10 feet measured horizontally and must extend at least 3 feet above the highest point of its roof penetration. This specification makes sure steep roof slopes are cleared. 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.