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Licensed & InsuredFully certified in Massachusetts
Direct Insurance BillingAll carriers, no upfront cost on covered work
Electrical Fire Restoration for Boston’s Pre-War Wiring
Electrical fire restoration is the cleanup and repair that follows a wiring fire: making the system safe, opening and cleaning the wall cavities the fire traveled, removing the corrosive smoke residue that burning insulation leaves behind, and coordinating the rewiring and municipal inspection required before the power comes back on. It is the one fire loss where the cause is still built into the house, so restoration and electrical repair have to happen together.
Boston’s housing stock explains why we run so many of these calls. Much of the pre-war stock in Roxbury, Dorchester, and Roslindale still carries knob-and-tube circuits behind the horsehair plaster, with rubberized cloth insulation that dries out and cracks after a century of heating seasons. Blown-in insulation added over those old conductors traps their heat, a documented ignition risk. Meanwhile, plenty of South Shore capes and colonials still run on 60-amp services and aging panels, including brands with known breaker failure histories, that were never sized for the loads a modern household pulls.
The converted triple-decker deserves its own paragraph. One building’s original wiring now feeds three separately metered units, each running window air conditioners in July and space heaters in January, often through daisy-chained power strips on circuits laid out for a single family in 1910. According to the NFPA, electrical distribution and lighting equipment ranks among the leading causes of home structure fires, and these fires do outsized property damage because so much of the burning happens out of sight.
That hidden footprint is why our full fire damage restoration process treats every wiring event as a whole-system loss. Unlike electrical fire repair services that stop at the burn room, we scope the circuit path, not just the scorched outlet, and we start that scope the same day you call.
Why Do Electrical Fires Smolder Inside the Walls First?
Most electrical fires are old before anyone smells them. A loose connection or damaged conductor arcs intermittently, and each arc chars the wood around it. That charring, called pyrolysis, progressively lowers the temperature at which the framing can ignite, so a junction that ran warm for two winters can finally light a stud bay at 3 a.m. on an ordinary night. The flame at the outlet is often the third act, not the first.
Once a cavity fire starts, the balloon framing common in homes built before the 1930s carries smoke from the basement sill to the attic without crossing a single doorway. Consequently, we regularly trace smoke residue two floors from the failed device. Thermal imaging, a borescope, and selective openings along the circuit path let us map that spread without gutting rooms that were never touched.
The Myth
“The breaker tripped and the outlet stopped smoking, so the fire is out and we can turn the power back on.”
What Actually Happens
Arcing leaves carbonized paths and heat-damaged conductors that a reset breaker can re-energize straight into a second fire, sometimes in a cavity that is still smoldering. The affected circuits stay dead until a licensed electrician has evaluated them and the wiring inspector has signed off. No exceptions, including ours.
Ansy Chevalier, our owner and an IICRC certified restorer, says it in one line: “An electrical fire is the only loss where the cause is still attached to the house. Clean the smoke and skip the wiring, and you have staged the sequel.”
Electrical Fire Damage Cleanup, From Cavity to Panel
Burning wire insulation changes the chemistry of the whole job. PVC jacketing releases chloride compounds as it burns, and those compounds combine with ordinary indoor humidity to form hydrochloric acid on every surface the smoke touched. That acidic film corrodes copper, circuit boards, and panel internals, which means electronics and even undamaged wiring near the fire need corrosion control fast, not eventually.
The cleanup itself follows the residue, not the floor plan. Inside opened cavities we HEPA-vacuum char and soot from the framing; on plaster and finishes we match the method to the residue the way our soot removal crews do on any burn, dry sponging first, degreasers only where testing says so. When the smoke traveled beyond the fire room, and it usually did, the job widens into whole-house smoke damage cleanup with air scrubbing and surface-by-surface testing.
Throughout, everything feeds the claim file: the fire department report, the electrician’s findings on cause, photos of the charred cavity, and the residue map. Electrical fires are covered losses, but they invite scrutiny about the wiring’s condition, so the documentation has to be airtight before the adjuster walks the site.
- Make-safe and lockoutPower isolated at the service, affected circuits locked out, structure secured and documented before anything moves.
- Cause and spread mappingThermal imaging and borescope inspection along the circuit path with a licensed electrician, so the openings that follow are surgical.
- Selective openingsPlaster opened only where the mapping says the fire or smoke traveled, photographed before and after each cut.
- Residue and corrosion controlHEPA vacuuming, dry sponging, and degreasing matched to the residue, with chloride film neutralized on metals and electronics.
- Rewire, inspect, rebuildElectricians replace the damaged circuits, the city wiring inspector signs off, and only then do the walls close.
The panel gets opened and tested before anything is energized again.
24/7Emergency dispatch, every night of the year
60minTypical arrival across Boston and the South Shore
$0Upfront on covered electrical fire losses
1Claim, one team, from lockout to closed walls
Rewiring, City Inspection, and the Rebuild That Follows
Massachusetts does not treat post-fire electrical work as optional paperwork. Rewiring requires a permit pulled by a licensed electrician, and the municipal wiring inspector must approve the work before repaired circuits go back into service. We schedule the electricians, ours or the one you already trust, meet the inspector on site, and sequence the wall closures around that sign-off so nothing gets buried before it passes. If a fire marshal or origin-and-cause investigator is involved, we preserve the scene until they release it.
There is also an opportunity buried in the bad day. With the plaster already open along the circuit path, the marginal cost of correcting what caused the fire drops dramatically: replacing the remaining knob-and-tube on that run, retiring an obsolete panel, or adding the dedicated circuits a converted unit always needed. Some carriers ask for exactly these corrections before renewing the policy, and adjusters generally respond well to a scope that fixes causes rather than symptoms. Our disaster reconstruction crews handle everything from the insulation and blueboard to skim-coat plaster and paint, on the same claim as the cleanup, so the wall that closes matches the century-old wall beside it.
If the fire started at a charging station or in a vehicle battery pack rather than in the building wiring, that is a different job: see EV charger fire damage.
One boundary worth stating: this page is about fires that start in the wiring. If your outage or surge damaged electronics without a fire, that is an electrician’s call first, and we are happy to say so on the phone rather than roll a truck you do not need. Last updated August 2026.
New circuits go in and get inspected before a single sheet of drywall.
Which Electrical Fire Risks Come With Your Home’s Era?
The wiring era of a house tells us where to look after an electrical fire, and what the rebuild scope should anticipate. Pre-war homes carry knob-and-tube remnants and cloth-insulated conductors that turn brittle above ceilings and behind plaster. Homes wired or renovated in the 1950s through 1970s often carry service panels that inspectors flag by brand reputation for breakers that fail to trip, and a share of 1960s and 1970s construction used aluminum branch wiring, where oxidation at receptacles and splices creates the resistive heating that starts fires inside device boxes. None of this is a reason to panic, but all of it belongs in the post-fire evaluation.
As a result, our documentation for the claim goes beyond the burn area. We photograph the panel, note conductor types in the opened cavities, and record what the licensed electrician’s evaluation finds, because code-required corrections discovered during a covered rebuild are exactly where ordinance and law coverage earns its premium. More importantly, that record protects you at resale: a documented, inspected, corrected electrical system reads very differently to a buyer than a patched wall over an unknown cause.
Aged devices and aluminum branch wiring fail in ways newer homes do not.
Asked After the Breaker Trips
Electrical Fire Repair Questions From Older Boston Homes
Can the power come back on if the breaker reset after an electrical fire?
No. A breaker that resets tells you nothing about the condition of the conductors, and re-energizing arc-damaged wiring can start a second fire inside a cavity that is still hot. The affected circuits stay off until a licensed electrician evaluates them and the wiring inspector approves the repair. We coordinate both so the downtime is days, not weeks.
Does insurance cover a fire caused by knob-and-tube wiring?
Generally yes. A fire is a sudden, accidental loss, and policies cover it even when the wiring that failed was original to the house. The separate question is what your carrier requires afterward, since many now ask for knob-and-tube remediation as a condition of renewal. We document the cause carefully and scope the corrective rewiring into the same claim wherever the carrier allows it.
How do you find the damage inside the walls without gutting every room?
By mapping before cutting. Thermal imaging shows residual heat signatures, a borescope through small openings shows char and soot inside the cavities, and the circuit layout tells us which bays the fire could have reached. We then open plaster only along that documented path. In balloon-framed homes we always check the floors above, because smoke climbs the open stud bays.
Is smoke from burning wiring worse than ordinary smoke?
For your property, yes. Burning PVC insulation releases chloride compounds that turn into hydrochloric acid with indoor humidity, and that acid corrodes electronics, copper, and panel components far from the flame. It is also a serious respiratory irritant. This is why electrical fire cleanup prioritizes corrosion control on metals and electronics in the first visit, before the acids finish the job the fire started.
Who does the rewiring, Studio 24 or my electrician?
A licensed electrician, always. We work with electricians we trust across Boston and the South Shore, or with the one you already use, while we handle the openings, the cleanup, the closures, and the claim. You get one schedule and one document trail, and the electrical work carries a licensed professional’s permit and the city inspector’s approval.
Do Not Flip That Breaker Yet
Free same-day assessment, corrosive residue controlled on the first visit, and the rewiring, inspection, and rebuild sequenced on one claim.