The scope of work performed in the inspection or evaluation of a
fireplace, stove or other venting system had previously been left
to the discretion of the chimney service technician. On January
13, 2000, the
National Fire Protection Association
adopted these levels of inspection into code NFPA 211 (Standard
for Chimneys, Fireplaces, Vents and Solid Fuel Burning Appliances)
that remove much of that "discretion". Inspections are now clearly
defined as Level 1, Level 2 or Level 3.
NFPA
211 is the standard upon which certified chimney sweeps
base their services and
CSIA Certified Chimney Sweeps
are tested to these three levels of inspection. Always ask for the
level of inspection that you believe will be most appropriate for
your chimney and venting system. Each level of inspection covers
specific items depending on the individual appliance and venting
system.
Below is an explanation of the three levels of inspections and what
services your chimney service technician should provide for each
level as defined by the
NFPA 211:
Level 1 inspections
If your appliance or your venting system has not changed and
you plan to use your system as you have in the past, then a
Level 1 inspection is a minimum requirement. A Level 1 inspection
is recommended for a chimney under continued service, under
the same conditions, and with the continued use of the same
appliance. In a Level 1 inspection, your chimney service technician
should examine the readily accessible** portions of the chimney
exterior, interior and accessible* portions of the appliance
and the chimney connection. Your technician will be looking
for the basic soundness of the chimney structure and flue as
well as the basic appliance installation and connections. The
technician will also verify the chimney is free of obstruction
and combustible deposits.
Level 2 Inspections
A
Level 2 inspection is required when any changes are made to
the system. Changes can include a
change in the fuel type, changes to the shape of, or material
in, the flue (i.e. relining), or the replacement or addition
of an appliance of a dissimilar type, input rating or efficiency.
Additionally, a Level 2 inspection is required upon the sale
or transfer of a property or after an operation malfunction
or external event that is likely to have caused damage to the
chimney. Building fires, chimney fires, seismic events as well
as weather events are all indicators that this level of inspection
is warranted.
A Level 2 inspection is a more in-depth inspection than a Level
1 inspection.� When a Level 1 or Level 2 inspection suggests
a hidden hazard and the evaluation cannot be performed without
special tools to access concealed areas of the chimney or flue,
a Level 3 inspection is recommended. A Level 3 inspection addresses
the proper construction and the condition of concealed portions
of the chimney structure and the flue. Removal or destruction,
as necessary, of permanently attached portions of the chimney
or building structure will be required for the completion of
a Level 3 inspection. A Level 2 inspection includes everything
in a Level 1 inspection, plus the accessible portions of the
chimney exterior
and
interior including attics, crawl spaces and basements. It will
address proper clearances from combustibles in accessible locations.
There are no specialty tools (i.e. demolition equipment) required
to open doors, panels or coverings in performing a Level 2 inspection.
A Level 2 inspection shall also include a visual inspection
by video scanning or other means in order to examine the internal
surfaces and joints of all flue liners incorporated within the
chimney. No removal or destruction of permanently attached portions
of the chimney or building structure or finish shall be required
by a Level 2 inspection.
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Level 3 Inspections
A Level 3 inspection includes all the areas and items
checked in a Level 1 and a Level 2 inspection, as well as the
removal of certain components of the building or chimney where
necessary. Removal of components (i.e., chimney crown, interior
chimney wall) shall be required only when necessary to gain
access to areas that are the subject of the inspection. When
serious hazards are suspected, a Level 3 inspection may well
be required to determine the condition of the chimney system.