Filter
Top Products
29
!
For Vertical Terminations - To locate the vent and
install the vent sections:
Locate and mark the vent centerpoint on the under-
side of the roof, and drive a nail through the
centerpoint.
Make the outline of the roof hole around the
centerpoint nail.
The size of the roof hole framing dimensions
depend on the pitch of the roof. There MUST BE a
1-inch (25.4 mm) clearance from the vertical vent
pipe to combustible materials.
Mark the roof hole accordingly.
Cover the opening of the installed vent pipes.
Cut and frame the roof hole.
Use framing lumber the same size as the roof
rafters and install the frame securely. Flashing
anchored to the frame must withstand heavy winds.
Continue to install concentric vent sections up
through the roof hole (for inside vent installations) or
up past the roof line until you reach the appropriate
distance above the roof (for outside terminations).
WARNING:
MAJOR U.S. BUILDING CODES SPECI-
FY MINIMUM CHIMNEY AND/OR VENT
HEIGHT ABOVE THE ROOF TOP. THESE
MINIMUM HEIGHTS ARE NECESSARY IN
THE INTEREST OF SAFETY. SEE THE
FOLLOWING DIAGRAM FOR MINIMUM
HEIGHTS, PROVIDED THE TERMINA-
TION CAP IS AT LEAST TWO (2) FEET
FROM A VERTICAL WALL AND 2-FEET
BELOW A HORIZONTAL OVERHANG.
NOTE
This also pertains to vertical vent systems installed
on the outside of the building.