Images Of Chimney Height Above The Roof

This q a were posted originally at chimney height clearance code faqs 5.

Images of chimney height above the roof. If your peak to penetration distance is 7 feet you would have a rise of 28 inches. Tom if you are saying that your metal chimney height extends un supported six feet above a roof surface then imo it ought to be braced. For the next example you have a shorter chimney height. The chimney must extend at least 3 above the highest point where it passes through a roof.

Easy calculation for chimney pipe height. Per the 10 and 2 rule once you are at the level of the peak you only need to be 2 feet above it. This means that below 38 degree roof pitches that the height of the flue outlet should be at least 1800mm above the roof when not close to the ridge and above 38 degree roof pitches the flue outlet height should be 2300mm horizontally back to the roof flue height figures are given in the table above where the flue is not close to the ridge. This doesn t necessarily mean the pipe must be above the tallest part of the roof which is known as the ridge.

Chimney clearance from combustible material is a minimum of 2 in. 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. Also chapter 3 of the inspecting roofing course says it is a common mistake to apply chimney termination height requirements 3 2 10 rule to fuel vents which cause vents to extend above roofs much higher than needed the rules seems conflicting. What is the 2 foot 10 foot 3 foot rule.

One picture shows 3 feet one says 2 feet and the chart shows 1 foot. Knowing the pitch of the roof is extremely helpful in determining the height the chimney pipe must be above the roof. So 28 inches plus 24 inches is a chimney height of only 52 inches. Typical metal chimney instructions specify that if the free standing chimney height is over 5 feet then support brackets are.

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. 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. Positing a chimney on the home relative to the rest of the home may cause it to draw better. The minimum chimney height for fire safety is the greater of 3 ft 1 0 m above the highest point where the chimney penetrates the roofline or 2 ft 600 mm higher than any portion of the structure or adjoining structures within 10 ft 3 0 m of the chimney see fig.

This will generally cause you fewer problems as a homeowner. If the pipe is farther than 10 feet from the roof.