How Far Above Roof Does Chimney Pipe Need To Be

Specifications aren t there to merely cause you problems.

How far above roof does chimney pipe need to be. This specification makes sure steep roof slopes are cleared. The top of the chimney should be at least 3 ft 0 92 m above the roof surface. Vertical blue line along the left side of the chimney in our photo. The chimney must extend at least 3 above the highest point where it passes through a roof.

Exactly code dictates but here 3 foot is safe or less remember the chimney must be blocked off other than the stove pipe on the interior as well as the roof. The chimney must extend at least 3 feet above the highest point where it passes through the roof and be at least 2 foot higher than any part of the building within a horizontal distance of 10 feet figure 2. If you ve been researching class a chimney pipes you ve probably heard of the 3 2 10 foot rule numerous times. And at least 2 higher than any portion of a building within 10.

Other factors can influence the necessary height of the chimney such as house stack effect and high altitude. 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 it must be 2. The 10 foot rule explains the clearance you need.

Explained the chimney pipe must be a minimum of three feet above the roof but also two feet taller than anything within ten feet. Determine the number of chimney pipe lengths required. They intend to make sure that the chimney draws properly and that a fire hazard does not occur. The cool air surrounding the stove pipe will travel down pulling the hot poisons from the stovepipe and back down into the living space.

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. This rule refers to the proper height of the chimney pipe above the roof.