Choosing the right chimney inspection level for an Everett house

NFPA 211, the national standard for chimneys, fireplaces, vents, and solid fuel-burning appliances, devotes its Chapter 15 to inspecting existing chimneys and defines three inspection types: Level I, Level II, and Level III. Most homes, most years, need a Level 1. A short list of events raises the minimum.

• You are selling, or you just bought. Sale or transfer of the property is one of the standard's Level 2 triggers. In Everett that trigger lands on old buildings unusually often: more than 7,200 units date from 1939 or earlier and about half of the city's housing predates 1980, so the chimney changing hands is frequently original to the house.
• The appliance is changing, or already changed. A change of fuel, a change of appliance, or a new connection to an existing flue moves the minimum to Level 2. This is the case behind most Everett inserts: a wood stove or insert was put into an original fireplace at some point, and the flue underneath was never scanned afterward.
• Relining is on the table. CSIA and NFPA 211 both call for a Level 2, including a video scan of the flue, before a chimney is lined or relined. The scan is what establishes whether a liner is needed and what size and material it has to be, so it comes before the quote, not after.
• Nothing has changed. Then it is a Level 1, annually. EPA and fire officials recommend having the wood-burning appliance, chimney, and vent professionally inspected and cleaned every year.
• Something is wrong that nobody can see. A Level 3 opens up concealed areas — a chase, a wall, a ceiling — and is only justified when a Level 1 or 2 has found reason to believe there is a hazard behind them. It is quoted on its own, and closing and finishing the openings again is a separate scope.

A chimney built before 1940 in Everett is almost always site-built masonry with a clay tile flue and a masonry crown, and it has taken eighty or more winters of the local pattern: 21.4 nights a year at or below freezing but only 1.7 days that never rise above it, so wet masonry cycles through freezing and thawing roughly twenty times a season rather than staying frozen.

Clay tile does not announce failure. It cracks and separates at the joints, inside the flue, where nothing on the outside of the chimney shows it. That is why a purchase or a first fire in a house of this age is a documentation problem rather than a judgment call, and why the scan matters more here than the exterior condition does.

• What the flue actually is. Original clay tile, a listed liner retrofitted into the old stack, or nothing but bare masonry. The answer changes every later decision, and it is not reliably visible from the firebox.
• Whether the tile is intact. Cracked or collapsed tiles, missing chunks, and failed joints between tiles. CSIA lists cracked or collapsed flue tiles and tiles with large chunks missing among the homeowner-visible signs of a past chimney fire, and after one the fix ranges from replacing tiles to a new liner system to rebuilding the chimney.
• Whether the liner suits the appliance. UL 1777 is the standard for liners field-installed into masonry chimneys, and UL 103 covers factory-built chimneys. Material has to match the appliance and the fuel, not just fit the hole.
• Whether the flue is the right size. Liner manufacturers cap the flue for a solid-fuel appliance at three times the appliance outlet collar, and never smaller than the collar, and they state in their own instructions that an oversized or mismatched liner causes condensation inside the flue and poor performance. A modern insert in a flue sized for an open 1920s fireplace is exactly that mismatch.
• Whether insulation can be omitted. Manufacturers allow it only where the existing clay tile liner is in good condition and the chimney already meets code — which is precisely what the inspection has to establish rather than assume.

The first is that a chimney inspection and a buyer's whole-house inspection are different documents produced by different trades. A general home inspection normally looks at what is readily visible and stops there. It does not scan a flue, and it is not what a Level 2 requirement means.

The second is the wood stove sitting in the living room. Washington rule makes it illegal to advertise, sell, barter, exchange, or give away an uncertified solid fuel burning device. That reads alarming to a seller in a city with this much pre-war housing, so it is worth knowing the rest of it: the Department of Ecology states that a certified device must meet whichever standard is most protective under state or federal law, and that removing an uncertified stove is not required when a home is sold.

What the inspection contributes to either conversation is the same thing: a dated, photographed record of what is there and what condition it is in, produced before the negotiation rather than during it.

The report is the product. In Everett the step after an inspection often runs through one of two offices, and a report written only for the inspector's own memory will not survive either of them.

Permits for private construction in Everett come from the city's own Permit Services office rather than from a county counter, and the city splits the residential building permit into subtypes — structural work on an existing house is filed as a residential alteration, re-roofing is its own subtype for roofing material only, and a change to how an appliance vents generally belongs under a separate mechanical permit. Separately, a property in one of the three historic overlay zones, or on the Everett Register of Historic Places, brings the Historical Commission into a visible repair.

• The level actually completed. Named plainly, along with a note if a higher level was recommended and declined.
• Which flues and appliances were covered. A pre-war Everett stack often carries more than one flue, and a report that does not say which one it looked at is not usable later.
• What could not be reached, and why. An unstated gap becomes an argument at closing.
• Photographs of every condition described. From angles that can be repeated, so a later visit or a later owner can compare.
• Findings sorted into urgent, can wait, and needs nothing. In plain language, not in trade shorthand.
• Enough description for a permit or review submission. Where a repair is recommended, the condition and the proposed work described in terms a permit reviewer or a Certificate of Appropriateness submission can actually use.