Free Flue AssessmentDocumented scope before any claim is filed
IICRC CertifiedCert #70268689, S700 & S740 fire standards
One Team Through RebuildSmoke cleanup to finished masonry, one claim
60-Minute Response24/7 dispatch across Boston and the South Shore
Chimney Fire Repair for the Masonry Boston Was Built With
Chimney fire repair covers two kinds of damage at once: the cracked flue tiles, failed mortar joints, and spalled brick inside the chimney itself, and the smoke and odor the fire pushed into the living space around it. Both begin with a camera scan of the flue, and both belong on the same insurance claim. Treat only one of them and you either keep the smell or keep the hazard.
The fuel for these fires builds silently. Every wood fire sends unburned gases up the flue, and where they meet cooler masonry they condense as creosote. Given enough slow, smoky burns, that deposit matures into a glazed, tar-like third-stage layer that ignites somewhere near 2,000 degrees Fahrenheit, hot enough to crack clay tile liners through thermal shock in a single event. According to the NFPA, failure to clean the chimney is the leading factor in home heating fires, and those fires cluster in December through February, exactly when Boston flues are working hardest.
Our housing stock raises the stakes. The brick chimneys serving Dorchester two-families and Milton colonials mostly date to the 1920s or earlier, laid in soft lime mortar that a century of freeze-thaw cycles has already opened. Across the South Shore, center-chimney capes in Weymouth and Hingham hide their stacks inside the frame of the house, and plenty still vent the wood stove inserts that went in during the 1970s oil shocks, sometimes into flues that were never lined at all.
A flue fire in that masonry is a structure fire, whether or not the living room ever saw a flame. That is why our fire damage restoration services in Boston respond to chimney events with the same urgency as a kitchen or wiring loss: assessment the same day, documentation before repairs, and chimney fire damage restoration scoped end to end on one claim.
Pattern Recognition From the Flue Line
The Chimney Fire Calls We Run Every Heating Season
Chimney losses follow the calendar as reliably as the tides at Wollaston Beach. These are the three patterns we stage for once the first frost hits the South Shore.
The First Cold Snap Flue Fire
The pattern: the season’s first real fires get lit on a summer’s worth of unswept creosote, and the family hears a low roar in the wall as sparks shower from the cap.
How it resolves: camera scan of the full flue, tile-by-tile damage documentation, smoke cleanup in the affected rooms, and liner replacement scoped on the claim.
The Insert in an Unlined Flue
The pattern: a 1970s wood stove insert in a South Shore cape vents into parged brick with no liner, and years of slow burns build glazed creosote fast.
How it resolves: insert pulled, flue relined in insulated stainless steel, surrounding chase and framing inspected, and the smoke residue cleaned before the stove goes back.
The Fire Nobody Saw
The pattern: a sweep or home inspector finds puffed honeycomb creosote and displaced tiles, evidence of a flue fire the homeowner never knew happened.
How it resolves: a documented assessment dates and evidences the event for the carrier, and repairs get scoped before the sale or the next heating season, whichever comes first.
How Is Chimney Fire Damage Assessed? The Level 2 Inspection
You cannot scope chimney fire damage from the hearth. The industry standard for chimney care, NFPA 211, defines three levels of inspection, and after any suspected flue fire a Level 2 is the minimum: a camera scan of the flue interior from firebox to cap, plus examination of the accessible portions of attics, basements, and crawl spaces the chimney passes through. It is the same inspection level required when a property changes hands, which is how many quiet flue fires finally surface.
| Inspection level | When it applies | What it examines |
|---|---|---|
| Level 1 | Routine annual service with no changes to the system and no suspected event | Readily accessible portions of the chimney and flue for soundness and deposits |
| Level 2 | After a suspected flue fire, a property sale, or a change of appliance or fuel | Full video scan of the flue interior plus accessible attic, basement, and crawl space portions |
| Level 3 | When a Level 2 indicates hidden damage that cannot be seen otherwise | Concealed areas, with removal of chase covers, drywall, or masonry where necessary |
On the scan, we are reading evidence as much as damage: expanded honeycomb creosote, tiles cracked in the long vertical pattern thermal shock produces, displaced tile joints, and scorch marks at framing clearances. That distinction matters financially, because a chimney fire is a sudden, accidental event most Massachusetts homeowner policies cover, while ordinary deterioration is excluded wear and tear. Ansy Chevalier, our owner and an IICRC certified restorer, walks that evidence with your adjuster on site, which is precisely when video stills beat verbal assurances.
A camera up the flue finds the cracked tile a flashlight never will.
Creosote Fire Cleanup: Where Does the Smoke Travel?
A chimney runs through the private spaces of a house: the wall behind the bookshelves, the closet in the back bedroom, the attic nobody visits. When a flue fire cracks the tiles, smoke exits the liner into the framed chase around the stack, and from there the open stud bays of a balloon-framed home carry it upward. This is why a fireplace fire on the first floor so often shows up as a campfire smell in a second-floor closet, and why creosote fire cleanup that stops at the hearth always fails.
The residue itself is a hybrid. Burning creosote throws dense, oily soot with the tar compounds of the deposit that fueled it, so it smears like wet smoke and clings like glaze. In the rooms it reached, the work follows the same surface-by-surface testing as any whole-house smoke damage cleanup: dry sponging on plaster, degreasing where testing says so, and HEPA air scrubbing throughout. Inside opened chases, the framing gets vacuumed and cleaned before anything closes.
Odor is the stubborn half. Tar compounds soaked into chase framing keep off-gassing every time the chimney warms, so the smell returns each burn season until the source is removed. After source cleanup, our smoke odor treatment crews fog and seal along the smoke path so the house stops announcing the fire every December.
- Video stills of cracked or displaced flue tiles
- Photos of expanded honeycomb creosote
- Scorch documentation at framing clearances
- Smoke residue mapping, room by room and chase by chase
- Sweep history and the date evidence of the event
That file is what we hand your adjuster. It is the difference between a covered flue fire and a denied maintenance claim.
Smoke rides the chase into closets and ceilings on every floor.
From Flue Liner to Full Masonry Rebuild
Why do the older flues fail so completely? Many Boston chimneys built before the 1920s were never lined with clay tile at all, just parged with a thin coat of mortar that flue gases and acids have been eroding for a hundred years. When the parging goes, hot gases reach soft lime mortar joints directly, and a flue fire finishes in minutes what the decades started. An unlined flue that has burned cannot simply be swept and returned to service.
The repair scope scales with the damage. Cracked tile or unlined flues get relined, usually with an insulated stainless steel liner listed to UL 1777, or a cast-in-place liner where an offset flue will not accept one. Above the roofline, we rebuild failed crowns, reset caps, and repoint open joints. When tiles, brick, and mortar have all failed, our reconstruction team takes the stack down to sound masonry and rebuilds it, matching the original brick as closely as the yard can supply. Because the cleanup crew and the masons work under one roof, the interior smoke work and the chimney rebuild run on one schedule and one claim.
Timing deserves honesty, too. Masonry work above the roofline wants weather above freezing, so a January flue fire usually gets a staged plan: the flue made safe and sealed immediately, the interior creosote soot cleaned the same week, and the exterior rebuild scheduled for the first reliable thaw, with temporary heat arrangements documented for the carrier in between. A staged scope beats a rushed one, and your adjuster sees the whole sequence in writing from day one. Last updated August 2026.
Some chimneys need a liner. Some need the top four feet rebuilt.
Asked After the Roar in the Wall
Chimney Fire Questions From Boston’s Older Homes
How do we know if we actually had a chimney fire?
The loud signs are a freight-train roar in the flue, dense smoke, and sparks or flame at the cap. The quiet signs appear afterward: puffed, honeycomb-textured creosote in the firebox, flakes of burned deposit on the smoke shelf, or tile fragments behind the damper. Many flue fires burn unnoticed, so a camera inspection is the only way to know for certain.
Is a cracked flue liner from a chimney fire covered by insurance?
Usually yes, when the cracking came from a fire. A chimney fire is a sudden, accidental event most homeowner policies cover, while gradual deterioration is excluded as wear and tear. The evidence decides which story the carrier accepts, which is why we document expanded creosote, thermal-shock crack patterns, and displaced tiles on video before any repair begins.
Can we keep using the fireplace until the repairs are scheduled?
No. A cracked or displaced liner can let flue gases, embers, and carbon monoxide reach the framing and living space, and the second fire is routinely worse than the first because the liner is already open. Keep the flue cold until the inspection is complete and the repairs are done. We move chimney assessments to the front of the line during heating season for exactly this reason.
Why does the second floor smell like smoke when the fireplace is downstairs?
Because the smoke traveled inside the chimney chase rather than through the rooms. Cracked tiles leak smoke into the framed cavity around the stack, and open stud bays carry it to closets and bedrooms upstairs. The smell tells you where the residue settled, and it fades only when that framing is cleaned and deodorized at the source, not perfumed over.
Does an unlined chimney have to be relined after a fire?
Effectively, yes. Once fire has compromised a parged, unlined flue, no responsible inspector will approve it for continued use, and current code requires a listed liner for the appliance it serves. An insulated stainless steel liner listed to UL 1777 is the standard fix, with cast-in-place lining as the alternative for offset flues, and we scope either into the insurance claim when the fire caused the need.
The Flue Is Quiet. That Is Not the Same as Safe.
Free assessment with camera documentation, smoke cleanup and masonry rebuild on one claim, and your carrier billed directly.