Chimney Height Chart To Meet The 3, 2, 10 Foot Rule Above The Roof

Requirement #1: The chimney must extend not less than 3ft. above the
highest point at which the chimney comes in contact with the roof.

Requirement #2: The chimney must extend not less than 2ft. above the
highest roof surface or structure within a horizontal distance of 10ft.



All measurements are in inches with the exception of "distance from the peak" being in feet

Step 1 = Multiply the upper part from the pitch of roof by the #of feet away from the peak
Step 2 = Add 24” to your calculation to meet requirement #2
Step 3 = Height of chimney required to extend above the roof line

*Measurements in Grey highlights have been moved to 36" to meet requirement #1