How Far Above Roof Should Chimney Be

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

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. The chimney must extend at least 3 above the highest point where it passes through a roof. If you ve been researching class a chimney pipes you ve probably heard of the 3 2 10 foot rule numerous times. 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.

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. 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 the pipe is farther than 10 feet from the roof peak. Specifications aren t there to merely cause you problems.

The 10 foot rule explains the clearance you need. The top of the chimney should be at least 3 ft 0 92 m above the roof surface. This specification makes sure steep roof slopes are cleared. Vertical blue line along the left side of the chimney in our photo.

This rule refers to the proper height of the chimney pipe above the roof. They intend to make sure that the chimney draws properly and that a fire hazard does not occur. 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.