How High Should Chimney Be Above Roof

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.

How high should chimney be above roof.

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. 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. Flues that are more than 3 metres away from the highest part of the roof need to be 1000mm above the flue penetration. The chimney must extend at least 3 above the highest point where it passes through a roof.

They intend to make sure that the chimney draws properly and that a fire hazard does not occur. Homes built on varying terrain have their own set of chimney and flue regulations. Specifications aren t there to merely cause you problems. The chimney in this example must extend 52 above the roof measured from uphill side of the chimney.

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. Flues need to be 600mm higher than the highest part of the roof within 3 metres. If the pipe is farther than 10 feet from the roof. Taller chimneys make more draft but chimneys exposed to outside cold don t.

2 build the chimney taller than the tallest part of the house. The height of the chimney above the roof surface measured at the up slope side of the chimney from the roof surface to the chimney top should be at least three feet the green line in our photo. Brace the chimney if necessary. Two things determine chimney draft.

And at least 2 higher than any portion of a building within 10. For most small structures like small cabins and tiny homes the tallest part of the structure is within 10 of the chimney. 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. Other factors can influence the necessary height of the chimney such as house stack effect and high altitude.

At this point we cover everything in the rule. There are strict codes that govern chimney placement for fire safety reasons.