How High Should Chimney Be Above Roof

Homes built on varying terrain have their own set of chimney and flue regulations.

How high should chimney be above 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. A chimney should be at least two feet above the highest roof point. Flues need to be 600mm higher than the highest part of the roof within 3 metres.

Taller chimneys make more draft but chimneys exposed to outside cold don t. Other factors can influence the necessary height of the chimney such as house stack effect and high altitude. 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. 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. Brace the chimney if necessary. There are strict codes that govern chimney placement for fire safety reasons. At this point we cover everything in the rule.

The chimney should extend at least 3 feet above the roof surface it penetrates and 2 feet higher than any roofline or other obstacle within a horizontal distance of 10 feet. Even if the chimney is on a one story section of the house and meets code in that it is ten feet away from the tallest part of the house build the chimmney taller than the tallest part of the roof. If the pipe is farther than 10 feet from the roof. The chimney in this example must extend 52 above the roof measured from uphill side of the chimney.

Chimney height may need to be increased by 2 3 per 1000 feet of elevation although added height generally equates to stronger draft there is a point where the system can become too long and over drafting might occur. 2 build the chimney taller than the tallest part of the house. Two things determine chimney draft. This is a bit of an odd measurement and chimney clearance case because the chimney side is actually about 8 away from the roof edge.

The chimney is a minimum for 3 above the uphill side of the roof and 2 higher than anything within 10 feet. For most small structures like small cabins and tiny homes the tallest part of the structure is within 10 of the chimney.