Smoke damage cleanup: walls, ceilings, contents and when DIY is OK

What does smoke damage actually leave behind?

Smoke damage is the film, stain and smell that combustion leaves on surfaces. The IICRC’s draft wildfire standard (S760) describes smoke as tiny carbon particles, oily tar-like substances, droplets and gases, and says soot can be powdery, oily or tar-like depending on what burned. That range is why one cleaning method does not fit every fire.

Smoke also travels. The IICRC, RIA and CIRI wildfire technical guide (December 2025) lists signs that smoke reached a room even when it looks clean: soot-coated spider webs that hang as dark chains near the ceiling, and dark outlines on walls or ceilings over studs and joists, called ghosting. It also notes that odor-causing compounds settle onto soot and surfaces and can off-gas for hours to weeks or months.

Smoke-only damage is a large share of fire claims. Verisk reports that 30% of claims in the first 30 days after the January 2025 Los Angeles fires were smoke-related, compared with 3% after the 2018 Camp Fire. If your house did not burn but smells or looks smoky, document it and report it.

Dry, wet and protein residue: what is the difference?

Restorers sort smoke residue by how the fire burned. These are trade terms, not a federal standard. The descriptions below come from Restoration & Remediation (R&R) magazine (2021); the cleaning notes come from the IICRC sources listed.

Texture is the practical clue. The draft IICRC S760 standard says residue that is tacky or hard to vacuum or wipe off calls for “medium cleaning”: foamed or sprayed cleaning solutions and scrubbing with a nylon brush. It also notes that dry methods alone may not restore appearance or remove odor. If HEPA vacuuming and a damp wipe do not lift the residue, that is a job for a pro.

When is DIY smoke cleanup reasonable?

Doing it yourself makes sense when the damage is light, limited to one or two rooms, and on washable surfaces. The Red Cross gives homeowners step-by-step cleaning advice for exactly this situation. It also says to wear protective clothing, including work gloves and heavy-soled shoes, and to wet down debris to minimize breathing dust.

DIY stops making sense when:

• residue is oily, sticky or spread through the house,
• fire hoses soaked drywall or insulation (the Red Cross says to consult a professional about replacing it),
• soot may be in the ducts, or
• your home was built before 1978 and cleaning would mean sanding or scraping paint. EPA’s RRP rule covers paid work on painted surfaces in those homes.

People with asthma or lung disease should not do the cleaning. Call your insurer before you start, since some insurers want to inspect first. Our fire damage restoration process guide shows what a professional job includes.

How do you clean smoke off walls and ceilings?

The Red Cross method for walls, furniture and floors is to use a mild soap or detergent, or mix 4 to 6 tablespoons of trisodium phosphate (TSP) and 1 cup of household cleaner or chlorine bleach per gallon of warm water. Wear rubber gloves. Then:

1. HEPA vacuum loose soot first. The IICRC wildfire guide calls for HEPA vacuuming before damp cleaning so particles are not smeared or kicked back into the air.
2. Wash walls one small area at a time, working from the floor up to prevent streaking (Red Cross).
3. Rinse with clear warm water right away and dry thoroughly.
4. Wash ceilings last.
5. Do not repaint until walls and ceilings are completely dry.

Washable wallpaper can be cleaned like painted walls, but do not soak through the paper (Red Cross). Two cautions: the Red Cross says TSP is caustic, so read the label and test first; and CDC says never mix bleach with ammonia or any other cleanser. Do not combine the TSP-bleach mix with other products.

How do you clean smoke from furniture, floors and belongings?

For hard surfaces, the IICRC wildfire guide says nonporous items like ceramics and finished furniture should be HEPA vacuumed and damp wiped. Hard floors get the same treatment. Carpet that can be saved needs HEPA vacuuming followed by hot water extraction. Heavily affected carpet may need replacing along with the pad.

The Red Cross adds these tips:

• Wash pots, pans and flatware in soapy water, rinse, then polish.
• Stuff purses and shoes with newspaper to keep their shape.
• Leave suitcases open to air out.

Upholstery, mattresses and stuffed items are harder. They hold odor deep in the padding. The IICRC guide says porous items like clothing and bedding should be professionally laundered or dry-cleaned, and items that cannot be cleaned should be thrown away. Photograph them and list them for your insurer first. The Red Cross also says to throw away food, drinks and medicine exposed to heat, smoke or soot.

How do you get smoke out of clothes?

Test garments before you treat them and follow the care label, the Red Cross says. For clothing that can be bleached, it suggests 4 to 6 tablespoons of TSP and 1 cup of household cleaner or chlorine bleach per gallon of warm water. A gentler option it offers is a cold wash with your usual detergent plus one tablespoon of pure vanilla extract.

Some items will need more than one wash. Dry-clean-only garments should go to a cleaner, and tell the cleaner they are smoke-damaged. Keep receipts for your claim. If smell is still the problem after cleaning, see our guide to smoke odor removal.

Why does smoke cleanup affect mold risk?

Fire cleanup often involves water: from hoses, from broken pipes, and from washing. Wet materials that stay wet can grow mold. The Red Cross suggests wiping surfaces that got wet with 1 cup of liquid household bleach per gallon of water to reduce mold and mildew. Test first, because bleach can discolor surfaces. CDC also caps bleach at no more than 1 cup per gallon of water. If you will be removing moldy materials, see our guide to mold cleanup PPE.

What should a professional smoke cleaning include?

A pro job should start with an assessment of how far smoke spread, then source removal, then cleaning, then odor control. The ANSI/IICRC S700 standard covers fire and smoke restoration, and the IICRC Fire and Smoke Restoration Technician (FSRT) certification covers the cleaning and deodorizing steps. Our page on IICRC certifications explains what each one means.

Ask for a written scope that names each room, the cleaning method and how completion will be checked. The IICRC wildfire guide describes a final walkthrough with wipe testing and an odor check. Compare prices with our fire damage restoration cost page, and browse the fire and smoke hub for related guides.