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Fig. 2: Common Chimney Problems
Table 2: Common Chimney Problems
Refer to Figure 2
Key
Trouble
Top of chimney
lower than
A
Observation
surrounding
objects
Chimney Cap
B
Observation
or ventilator.
Coping restricts
C
Observation
opening.
5
Diagnostic
Remedy
Extend chimney
above all
surrounding
objects within
30 feet.
Remove
Make opening
as large as
inside of
chimney.
Can be found
Obstruction in
by light and
chimney
D
mirror reflecting
conditions in
chimney.
Lowering a light
Joist protruding
E
on an extension
into chimney.
cord.
Smoke test -
build smudge
fire blocking off
Break in
F
other opening,
chimney lining.
watching for
smoke to
escape.
Collection of
soot at narrow
Lower light on
G
space in flue
extension cord.
opening.
Lower light on
H
Offset
extension cord.
Two or more
Found by
I
openings to the
inspection from
same chimney.
basement.
Loose-seated
J
pipe in flue
Smoke test.
opening.
Measurement
of pipe from
Smoke pipe
within or
K
extends into
observation of
chimney.
pipe by means
of a lowered
light.
Failure to
extend the
By inspection or
L
length of flue
smoke test.
partition to the
floor.
Loose-fitted
M
Smoke test.
clean-out door.
Use weight to
break and
dislodge.
Must be
handled by
competent
masonry
contractor.
Must be
handled by
competent
masonry
contractor.
Clean out with
weighted brush
or bag of loose
gravel on end
of line.
Change to
straight or to
long offset.
The least
important
opening must
be closed,
using some
other chimney
flue.
Cementing all
pipe openings
should
eliminate leaks.
Length of pipe
must be
reduced to
allow end of
pipe to be flush
with inside of
tile.
Extend partition
to floor level.
Close all leaks
with cement.
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Troubleshooting
