The Fire and Smoke Damage Restoration Process (How Fire Techs Work a Job)

The first visit is about control, not cleaning.

The crew makes the structure safe to enter, weathers it against further damage and secures it against entry, and starts the job file that will carry the loss through to the rebuild.

The safety pass comes before any equipment crosses the threshold.

The crew lead checks the structural members the fire exposed, the floors and the electrical, and confirms utilities are shut off or isolated where the fire compromised them.

Fire weakens materials in ways that are not visible from the doorway, so entry is a decision, not a default.

Then the building gets closed up.

Board-up covers broken windows, doors and damaged openings, and roof tarping goes over the sections where the fire burned through the roof deck.

Both keep weather out and keep the site secure while the restoration scope is built.

Water is part of the same loss.

Suppression water soaks into the structure while the smoke does its damage, so the first truck carries extraction and drying equipment alongside the cleaning gear, and the drying scope runs next to the smoke scope for the life of the job.

One rule the S700 summary puts up front: when regulated hazardous materials are suspected, restorers shall perform work consistent with the authority having jurisdiction's regulations.

Suspicion is enough to change the plan — the crew does not treat a suspected material like an ordinary residue until the rules that govern it are clear.

The assessment answers the three questions the S700 names for it: whether fire residues and odors are present, how intense they are, and where their boundaries sit.

The standard's scope runs those questions across buildings, systems such as HVAC, and contents, for fires inside the building or in adjoining or nearby buildings.

Wildfires sit outside that scope.

The IICRC describes the S700's fire event as one occurring within the building, an adjoining building, or buildings in the vicinity, other than wildfires.

A smoke intrusion from a wildfire at distance is therefore not an S700 fire event, and how your company scopes one is its own call.

The inspection itself is a walk.

Room by room and surface by surface, the tech maps where residues landed, logs photos into the job file, and takes moisture readings where suppression water is present.

The stained ceiling in one room and the clean wall in the next are both data: the boundaries are what the rest of the file gets measured against.

Pre-testing turns the walk into decisions.

Before a cleaning method is committed to a wall or a ceiling, the tech runs it on a small, representative spot and reads what the surface does.

What one finish tolerates, the finish in the next room will not — testing rather than assuming is what keeps a salvageable surface from becoming a replacement item.

The findings become the scope.

What gets cleaned, what gets sealed, what gets replaced and what goes to a contents division all come out of this inspection, and the estimate and the insurance file are built on it.

Scoping sits at the front of the credential path: the IICRC's Fire and Smoke Restoration Technician (FSRT) certification, which has no prerequisites, covers scoping, mitigation, cleaning, deodorization, subrogation, spoliation and documentation of fire- and smoke-damaged structures and contents.

If you are new to the role itself, the fire restoration technician career guide covers the whole job — duties on a loss, the FSRT and OCT certifications, and where the career leads.

Contents decisions happen early because they gate the rest of the job.

The structure side cannot be cleaned around full rooms, and items may matter to the insurance claim, so the sorting starts while the assessment is fresh.

Each item lands in one of three outcomes: clean it in place, pack it out to a contents division for restoration, or write it off.

As the sorting happens, the tech inventories, photographs and tags.

That paperwork is what lets any item be found, tracked and returned when the job closes.

A pack-out is a controlled move, not a sweep.

Items are boxed and labeled against the inventory, logged out of the building and into storage, and logged back when the structure side is done.

The inventory is the spine of the operation: without it, a packed-out job turns into a pile of unclaimed boxes.

The FSRT coverage list explains why the paperwork runs this formal.

Subrogation and spoliation sit on it alongside cleaning and documentation — which is why techs record the condition of items before anything is cleaned, packed or discarded, so the record of what the fire actually damaged survives the work.

Some categories leave the job for specialists.

Electronics, documents and artwork each carry their own restoration pathways, and the fire tech's part in them is the inventory, the packing and the chain of paperwork rather than the repair itself.

Cleaning is the craft at the center of the job.

Residues differ with what burned, how hot the fire ran and how far the smoke traveled before it landed, and the film that wipes off one finish can bond to the finish beside it.

The pre-tests from the assessment are what tell the tech which approach each surface takes.

Loose residue comes off before anything wet touches the surface.

Dry approaches — vacuuming, dry-sponge passes — lift the particulate sitting on top of the finish; wetting that layer first can drive it down into the material, where no surface pass reaches it.

Washable surfaces then take wet cleaning with products matched to the residue and the finish.

Porous and delicate materials take gentler methods, and some surfaces fail the test outright: char that cleaning cannot bring back is a replacement item, not a cleaning item, and the estimate reflects those calls.

The order matters.

Residues come off before anything gets sealed or painted — a coat over an uncleaned residue seals the problem into the wall, odor included, and hands it to whoever opens that wall next.

One honest limit on the detail.

The S700's working procedures, and the residue classifications behind the method choices, sit in the standard itself, which the IICRC sells through its S700 page.

This page describes the general practice; the standard and the FSRT and OCT course material are where the procedure-level detail lives.

Odor work follows the same logic as the rest of the job: the source goes first.

A deodorization pass run over residues that are still in place masks the smell for a while and then hands it back.

The odor control that holds is built on cleaned surfaces.

Deodorization sits on the IICRC's own coverage list for fire work: it is part of what the FSRT covers.

The IICRC's Odor Control Technician (OCT) certification, also with no prerequisites, covers olfaction, odor sources, odor-control theory, equipment and chemical options.

It counts toward both the Master Textile Cleaner and Master Fire and Smoke Restorer designations.

The equipment falls into families the tech mixes as the job needs.

Vapor-phase units push a deodorizing agent or a reactive gas into the cavities and porous materials cleaning cannot reach; air scrubbers filter the air while work runs; encapsulants block what cleaning could not pull out of a surface.

Each family has trade-offs, and which unit runs where is a call the tech documents.

Ozone carries published EPA caveats.

EPA describes high ozone concentrations as sometimes used in unoccupied spaces — its example is fire restoration — with conditions controlled so that no person or pet is exposed, and notes that little is known about the chemical by-products ozone treatment leaves behind.

EPA also warns ozone can damage materials such as rubber, electrical wire coatings, fabrics and artwork with susceptible dyes and pigments, and can harm indoor plants.

On a contents-heavy job that list is a risk assessment in itself: the same unit that treats a room can damage the materials inside it.

EPA adds that at concentrations within public health standards, ozone is not effective at removing many odor-causing chemicals — in one test it cites, ozone had no effect on formaldehyde.

The rest of the equipment world is documented mostly by its makers.

Performance and safety claims for a specific hydroxyl or fogging unit are the manufacturer's claims.

Read the documentation and your employer's protocols before any unit runs, and keep the deployment notes in the job file.

Sealing comes after cleaning, not instead of it.

Where a surface is structurally sound but the cleaning could not pull all of the residue or odor out of it, an encapsulant or sealing primer locks in what remains before the surface is refinished.

The call is documented: the file shows why each sealed surface was sealed rather than cleaned further or replaced.

Sealing earns its place where odor-bearing residues reached raw wood and masonry — framing, subfloors, and surfaces that are stained but structurally worth keeping.

It is the step that lets a sound surface stay in the building instead of becoming a demolition item.

The handoff to rebuild is the end of the mitigation file and the start of someone else's.

Structural repairs — framing, drywall, flooring, finishes — are reconstruction work, and the IICRC is explicit that the S700 does not comprehensively address reconstruction, wildfires, chemical or industrial fires, special-requirement buildings such as healthcare facilities or clean rooms, or occupants with special requirements.

The S700's scope is assessing and restoring fire residues and odors; what happens after is construction work under its own standards and contracts.

What crosses the handoff is the mitigation record: the photo file, the monitoring notes, the scope decisions, the contents inventory and the sealed-surface map.

Estimators and project managers build the reconstruction estimate and schedule from that record, which is why the documentation discipline from the first visit pays off at the end of the job.

Close-out on the mitigation side is work of its own: a final walkthrough of the cleaned areas, equipment pulled once its job is done, and a file assembled so the rebuild crew never has to guess why a surface was cleaned, sealed or replaced.

When that file closes, the fire tech's part of the loss is done — and if you are building toward this work, browse fire restoration technician jobs on this board.

Career information, not licensing, legal, insurance, health or safety advice. Confirm current requirements with the IICRC, EPA, OSHA and the authority having jurisdiction for your job.