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The Fire Damage Restoration Process: Step by Step
June 8, 2026

The Fire Damage Restoration Process: Step by Step

Your house fire is out. The fire department has cleared the scene. Now you’re standing in front of a property that smells like a chimney, has blackened walls, and may have water damage on top of the fire damage from suppression efforts. What happens next, and in what order? Here’s the full fire damage restoration process broken into seven stages, with the reasoning behind each one.

Why the sequence matters

Fire restoration isn’t just cleaning up char. Smoke and soot are chemically active — they keep etching surfaces, corroding metals, and penetrating porous materials for days after the fire is out. The longer the wait, the deeper the damage. A professional crew works the process in a specific order because each step creates the conditions the next step requires. Skipping or reordering stages creates problems downstream.

The IICRC S700 standard governs fire and smoke damage restoration. It classifies smoke residues by type (wet, dry, protein, fuel oil) because each type requires a different cleaning chemistry. A crew that treats all soot the same way will either spread residue further or etch finishes they were trying to save.

Step 1: Emergency board-up and site stabilization (Day 1)

Before any cleaning or assessment happens, the structure needs to be secured. Broken windows, compromised doors, and roof openings from fire or suppression activity create two problems: weather intrusion (especially relevant in the Pacific Northwest, where rain arrives fast) and unauthorized entry.

A board-up crew installs plywood over window and door openings, applies roof tarps to any breached areas, and places visible security notices. This step is typically billable to your insurance claim as an emergency service. Keep the invoice — adjusters expect it.

If the fire involved structural collapse or the building is tagged as unsafe by the fire marshal, no interior work begins until a structural engineer clears the site.

Step 2: Damage assessment and scope development (Day 1-2)

Once the structure is secured, a project manager walks the property with a moisture meter, a thermal imaging camera, and a detailed scope form. The assessment does three things:

  • Classifies the fire and smoke type. Kitchen grease fires produce wet, sticky smoke residue that behaves differently from a dry-fuel fire in a living room. Protein smoke from a stovetop fire is nearly invisible but creates a powerful odor and bonds tightly to surfaces.
  • Documents suppression water damage. Fire hoses deliver high volumes of water. If firefighters worked the scene, expect Category 1 water intrusion (clean water from municipal supply) that needs the same drying protocol as a burst pipe.
  • Establishes the scope for insurance. The written scope — itemizing what gets cleaned, what gets replaced, and what gets reconstructed — is the document your adjuster works from. A vague scope creates disputes. A detailed, line-item scope with photos reduces them.

This is also when the crew identifies contents that can be restored versus contents that need to be discarded. Electronics, upholstered furniture, and documents all have different restoration thresholds.

Step 3: Debris removal and controlled demolition (Days 2-4)

Charred structural materials — drywall, insulation, framing — can’t be cleaned. They’re removed. This is sometimes called “controlled demo” because the crew is selectively taking out only what’s unsalvageable, not gutting the entire structure.

Debris removal also exposes hidden fire spread. Fire travels through wall cavities and attic spaces in ways that aren’t visible from the surface. Pulling drywall in the affected area often reveals char lines that extend further than the visible burn zone. Better to find that now than after reconstruction.

During debris removal, the crew also removes contents that are being packed out for off-site cleaning. Clothing, soft goods, and restorable furniture go to a contents cleaning facility where they’re processed with ultrasonic cleaning, ozone chambers, or dry-cleaning methods depending on the material.

Step 4: Soot and smoke cleaning (Days 3-7)

This is the most labor-intensive phase and the one most homeowners underestimate. Smoke travels through an entire structure during a fire — not just the rooms that burned. Soot deposits on every surface that air reached: inside HVAC ducts, inside closets, on top of ceiling fan blades, behind outlet covers.

The cleaning method depends on residue type:

  • Dry soot (from fast-burning, low-moisture fuels) is powdery and responds to dry chemical sponges and HEPA vacuuming before wet cleaning.
  • Wet soot (from slow-burning, high-moisture fuels like rubber or synthetic materials) is smeared by dry methods and requires specific alkaline cleaners.
  • Protein residue (stovetop fires) requires enzymatic cleaners and often repainting because the residue bonds to the paint layer itself.

Hard surfaces — walls, ceilings, cabinets — are cleaned with appropriate chemistry and then sealed with a stain-blocking primer before any finish coat. The primer step is not optional. Smoke odor compounds in unsealed drywall will off-gas through new paint indefinitely.

In Tacoma and other jurisdictions with municipal HEPA filtration ordinances, restoration work that produces airborne particulate — including soot cleaning — requires HEPA-filtered negative air machines running continuously during the cleaning phase. This keeps fine particulate from migrating to unaffected areas of the structure and complies with local air quality requirements.

National Restoration Construction’s soot removal and smoke damage restoration work follows IICRC S700 protocols, with residue-type identification before any cleaning chemistry is applied.

Step 5: Structural drying (Days 3-7, overlapping with cleaning)

If suppression water is present, drying runs concurrently with cleaning. The drying protocol is essentially the same as a water damage job: LGR (low-grain refrigerant) dehumidifiers pull moisture from the air, axial air movers accelerate evaporation from wet structural materials, and moisture meters track daily readings until the materials reach their dry standard.

Fire-damaged structures have a complication water-only jobs don’t: wet materials that also have soot contamination can’t be dried in place if the drying airflow would spread soot further. The sequence matters — HEPA vacuum and clean before directing high-velocity air across a soot-covered surface.

Drying typically takes 3-5 days for standard residential water intrusion from suppression, longer if the structure has dense framing or concrete elements.

Step 6: Odor elimination (Days 5-10)

Once surfaces are clean and dry, odor treatment begins. Smoke odor is not a surface problem — the compounds (aldehydes, phenols, and other combustion byproducts) have penetrated into porous materials: drywall, wood framing, concrete, and subfloor. Masking sprays don’t work. The odor has to be neutralized at the molecular level.

Two primary methods are used, often in combination:

  • Thermal fogging: A petroleum-based or water-based deodorizer is vaporized into a fog that penetrates the same porous pathways the smoke followed. The fog particles bond to odor compounds and neutralize them. The structure must be vacated during treatment.
  • Ozone treatment: An ozone generator produces O3, which oxidizes odor compounds on contact. Effective in enclosed spaces. The structure must be vacated and ventilated thoroughly before re-entry — ozone at treatment concentrations is harmful to breathe.
  • Hydroxyl generators: A slower but occupant-safe alternative to ozone. Uses UV light to generate hydroxyl radicals that break down odor compounds. Can run while occupants are present in some configurations.

For severe fires, thermal fogging and ozone are often used in sequence. Odor removal after fire damage is one of the more technically demanding parts of the job — a structure that passes visual inspection but still smells like smoke will fail a re-occupancy inspection and, more practically, will be unlivable.

Step 7: Reconstruction (Weeks 2-6+)

With the structure clean, dry, and deodorized, reconstruction begins. Scope varies enormously based on fire severity: a contained kitchen fire might require only drywall replacement, cabinet reinstallation, and repainting. A whole-floor fire may require full framing repair, new mechanical and electrical rough-in, insulation, drywall, flooring, and finish work.

Because National Restoration Construction holds a General Contractor Certificate of Registration with WA State Department of Labor & Industries (license NATIORC792M6), the same company that handled mitigation can carry the project through to finished reconstruction — which simplifies insurance billing, eliminates handoff gaps, and keeps one point of accountability for the entire scope.

Reconstruction timelines depend on permit requirements, material lead times, and the insurance claim cycle. A well-documented scope from Step 2 accelerates the claim approval, which is the most common bottleneck.

What to do right now

If you’re in the immediate aftermath of a fire, three things matter before anything else: get a board-up scheduled (weather and security), call your insurance carrier to open a claim, and request a written damage assessment from a restoration contractor before any cleanup work begins. Work that starts before documentation is created is work that may not get reimbursed.

For a detailed assessment of your property’s scope, contact National Restoration Construction at (206) 883-0333 — available 24/7 for emergency response and next-day assessments across the greater Seattle-Tacoma area.

Frequently Asked Questions

How long does fire damage restoration take from start to finish?
It depends heavily on fire severity. A contained single-room fire typically takes 2-4 weeks from board-up through reconstruction. A whole-floor or multi-room fire can run 6-12 weeks or longer, especially if structural permits are required. The mitigation phases (cleaning, drying, odor treatment) usually complete within 7-14 days; reconstruction is where timelines extend.
Can smoke damage in rooms that didn't burn be restored, or does everything need to be replaced?
Most hard surfaces in smoke-affected rooms can be cleaned and sealed rather than replaced. Drywall with light-to-moderate smoke residue is typically cleaned, primed with a stain-blocking primer, and repainted. Heavily saturated drywall, insulation, and porous soft goods (carpet, upholstered furniture) are more often replaced because the cost to clean exceeds the replacement value and odor compounds are difficult to fully neutralize in highly porous materials.
Why does my house still smell like smoke after the cleaning crew finished?
Surface cleaning removes visible soot but doesn't address odor compounds that have penetrated porous materials — drywall, wood framing, subfloor, and concrete. Persistent smoke odor after cleaning usually means the odor elimination phase (thermal fogging, ozone treatment, or hydroxyl generation) was skipped or incomplete, or that surfaces were repainted without a stain-blocking primer seal. A proper restoration sequence treats odor as a separate, dedicated phase after cleaning.
Does homeowners insurance cover the full fire damage restoration process?
Standard homeowners policies cover fire damage from sudden, accidental fires — including mitigation (board-up, cleaning, drying), contents restoration, and reconstruction up to the policy's dwelling coverage limit. Emergency services like board-up are typically covered as part of the claim. Your adjuster will work from the written scope the restoration contractor provides. Disputes usually arise from vague scope documentation or from work that started before the adjuster could inspect — both are avoidable with a documented pre-work assessment.
What is thermal fogging and is it safe for my home?
Thermal fogging vaporizes a deodorizing solution into a fine fog that penetrates the same porous pathways smoke traveled through. The fog particles bond to odor compounds and neutralize them chemically. It is not safe to occupy the structure during treatment — occupants, pets, and plants must be removed. After treatment, the structure is ventilated for several hours before re-entry. When applied correctly by a trained technician, thermal fogging leaves no harmful residue.
What does IICRC S700 mean and why does it matter for fire restoration?
The IICRC S700 is the industry standard for fire and smoke damage restoration, published by the Institute of Inspection, Cleaning and Restoration Certification. It defines how smoke residues are classified (wet, dry, protein, fuel oil), what cleaning methods are appropriate for each type, and what documentation a proper restoration job requires. Hiring a contractor who follows S700 protocols matters because using the wrong cleaning method for a residue type can spread contamination further or permanently damage surfaces.

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