7
WARNING
MAJOR U.S. BUILDING CODES SPECIFY MINIMUM CHIMNEY AND/OR VENT HEIGHT ABOVE THE ROOF TOP. THESE MINIMUM HEIGHTS ARE NECESSARY IN THE INTEREST OF SAFETY. FIGURE 2 SHOWS MINIMUM HEIGHTS, PROVIDED THE TERMINATION CAP IS AT LEAST 8- FEET FROM A VERTICAL WALL.
NOTE: This also pertains to vertical vent systems installed on the outside of the building.
TERMINATION
C A P
Roof Pitch | H (min.) ft. |
flat to 6/12 | 1.0 |
6/12 to 7/12 | 1.25 |
over 7/12 to 8/12 | 1.5 |
over 8/12 to 9/12 | 2.0 |
over 9/12 to 10/12 | 2.5 |
over 10/12 to 11/12 | 3.25 |
over 11/12 to 12/12 | 4.0 |
over 12/12 to 14/12 | 5.0 |
over 14/12 to 16/12 | 6.0 |
over 16/12 to 18/12 | 7.0 |
over 18/12 to 20/12 | 7.5 |
over 20/12 to 21/12 | 8.0 |
Figure 2. Minimum Height from Roof to Lowest Discharge Opening
