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F. Cut out Hole in Roof
• Refer to Figure 8.6.
•
Plumb from roof to center of chimney.
• Drive a nail up through roof to mark center of pipe.
• Measure to either side of nail and mark the 14-1/2 in. x
14-1/2 in. (368 mm x 368 mm) opening required.
•
Measure opening on the horizontal; actual length may
be larger depending on roof pitch.
•
Cut out and frame opening.
•
Refer to Chapter 25 of the Uniform Building Code for
roof framing details.
G. Complete Installation
WARNING! Risk of Fire!
(51 mm) air space to insulation and other combustible
materials around the chimney system. Failure to do so
could cause overheating and fire.
•
Keep chimney sections from separating or twisting.
•
You may secure straight chimney sections at the joints
with screws no longer than 1/2 in. (13 mm).
The following steps should be skipped if using a
chase.
• Install roof flashing appropriate to roof pitch.
•
Install round termination cap and storm collar.
H. Install Flashing
•
Assemble chimney so it passes through the framed
opening.
• Slip the flashing over the chimney.
NOTICE:
Roofing shingles must be below the flashing
plate on the lower side of a sloped roof and over the
flashing plate on the sides and top.
• Nail the flashing to the roof. Keep gaps between the
flashing plate and the roof to a minimum.
• Caulk the flashing plate and roof junction as well as the
vertical seam on the flashing. All nail heads must be
caulked with a roofing sealant.
• Caulk the overlap seam of any exposed pipe sections
that are located above the roof line to prevent leaks.
28
Outdoor Lifestyles by Hearth & Home Technologies Inc.• 4072-203 Rev A • 08/18
You MUST maintain 2 in.
Figure 8.9
Ceiling/Attic Construction
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