8
with an engineer to determine the best way to do so
for your project.
E. If chimney exit opening does not already exist
locate the point where the chimney will exit the roof
by plumbing down to the center of the fireplace
chimney. Drive a nail into the roof to mark the cen-
ter.
F. Measure to all sides of the nail and mark the re-
quired opening, and then cut a hole in the roof. Re-
member that the hole is measured on the horizontal,
and then projected to the roof. The hole may then be
larger, depending on the pitch of the roof. See Fig-
ure 21.
G. Frame the opening in the roof.
H. Continue to add flue sections, extending the
chimney through the roof.
I. Install roof flashing appropriate to the roof pitch.
J. Use mortar to create a slope away from the clay
flue, running out to the edge of the finish material, to
assist with water drainage. Install the chimney cap
following instructions provided. This will protect
the chimney from rain, birds, animals and leaves.
See Figure 22.
4.2 Metal Chimney
Install the metal chimney following the instructions
below and the instructions provided by the chimney
pipe manufacturer.
Install a Stone Age masonry pipe adapter (sold sepa-
rately) to the top of the firebox, using a 14” I.D. adapt-
er for the NA 36. Connect the first pipe section to the
metal adapter as shown in Figure 23. Chimney
plumbing can either be straight through the ceiling and
through the roof, or if the fireplace is installed on an
outside wall, the chimney can be external to the house.
Affix warning labels to the pipe. See Figure 23.
A. When the chimney passes through a ceiling to an
upper floor, ensure the chimney pipe manufacturers
recommended clearances to combustibles is main-
tained with framing where it passes
through the ceil-
ing.
B. Complete chimney installation as shown in Fig-
ure 24. As the chimney extends through the attic to
the roof, attach securing straps to rafters and joists as
required to provide stability.
C. As the chimney rises through the ceiling, perhaps
a second floor, and through the attic and roof, 16
inches or 30 degrees is the maximum offset allowed,
and only one offset is permitted.
D. If chimney exit opening does not already exist, lo-
cate the point where the chimney will exit the roof by
Pipe
Adapter
Chimney
Pipe
Figure 21. Roof Penetration
Figure 22. Install Chimney Cap
Figure 23. Connect Chimney
Warning
Label
Summary of Contents for NA36IND
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