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.

How far above roof should chimney be.

The 10 foot rule explains the clearance you need. 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. And at least 2 higher than any portion of a building within 10. Explained the chimney pipe must be a minimum of three feet above the roof but also two feet taller than anything within ten feet.

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. 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 chimney opening above the roof of a sticks and bricks house should be 3 feet above the roof line or 2 feet above any part of the building within 10 whichever is higher.

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

If you ve been researching class a chimney pipes you ve probably heard of the 3 2 10 foot rule numerous times. This specification makes sure steep roof slopes are cleared. For most small structures like small cabins and tiny homes the tallest part of the structure is within 10 of the chimney.