 *Photo: Unsplash*
Kitchen grease fires are the most common cause of apartment kitchen fires in Canada. In Montreal, the risk is especially high in pre-war triplexes — a housing type where gas stoves are the norm and where many kitchens were built without range hoods, or with decorative hoods that are not properly vented to the exterior. When hot oil reaches its smoke point and ignites in an unvented kitchen, combustion gases roll immediately across the ceiling and down the walls, depositing a layer of sticky, black grease-soot on every surface within seconds.
Knowing how to respond in the first minutes — and how to clean up correctly in the hours after — makes the difference between a recoverable kitchen and one that needs professional fire restoration. This guide covers the Montreal-specific protocol, from the initial emergency through full surface cleanup, Montreal housing-type considerations, and your legal obligations as a Quebec tenant.
Safety First: The 60-Minute Window After a Grease Fire
Suppress correctly. The single most common mistake in a grease fire is reaching for water or flour. Water in contact with burning oil creates a violent steam explosion that launches burning oil across the kitchen. Flour creates a combustible dust cloud. The correct approach: - Cover the pan with a metal lid or baking sheet to cut off oxygen (for fires contained to the pan). - Use baking soda for moderate flare-ups — pour generously from above, never from the side. - If the fire is uncontrollable: leave the apartment immediately, pull the fire alarm in the hallway, and call 9-1-1. Do not attempt to carry a burning pan outside.
Ventilate — but strategically. Once the fire is out and all surfaces are cool to the touch (allow at least 30 minutes), open windows. If you have a window fan, face it outward to push smoke-laden air out, not inward. Do not turn on the range hood immediately — if the filters are coated in accumulated grease (very common in Montreal triplexes without regular hood maintenance), running the motor while the kitchen is still warm can restart a fire.
Document before you clean. Take dated photos of every affected surface from multiple angles before touching anything. You will need these for your tenant insurance claim (Desjardins, Intact, Aviva) and potentially for TAL proceedings if the damage involves the landlord's property.
Assess the Five Damage Zones
Grease fire cleanup follows a fixed sequence because each zone requires a different protocol:
1. Stovetop and burners — direct blast zone; heaviest grease carbonization 2. Walls and backsplash — soot deposition from convection roll; can extend to all four walls in small kitchens 3. Ceiling — the first surface hit; brown or black grease-soot film; most labour-intensive to clean 4. Cabinet exteriors — upper cabinets directly above the stove take the heaviest soot; lower cabinets are usually lighter 5. Floor — grease droplets and water from suppression attempts; often overlooked
Supplies You Need (with Montreal Sourcing)
| Supply | Purpose | Montreal source | Approx. price | |---|---|---|---| | HEPA vacuum | Dry soot removal before wet cleaning | Canadian Tire, Home Depot | rental $30–50/day or owned | | Dry soot sponge (chemical sponge) | Lifts soot off walls/ceiling without smearing | Canadian Tire, hardware stores | $8–15 | | TSP-PF (trisodium phosphate substitute) | Heavy grease-soot on plaster or drywall walls | Canadian Tire, Rona, Home Depot | $12–20/kg | | Dawn dish soap (or equivalent) | Cut fresh grease on stovetop, tile, floor | IGA, Maxi, Metro, Jean Coutu | $4–8 | | Baking soda | Paste for cast-iron grates; odour absorption | IGA, Maxi, Dollarama | $3–6 | | White vinegar | Cabinet exterior final rinse; grease cut | IGA, Maxi, Metro | $3–5 | | N95 respirator + nitrile gloves | Protect from soot particulate and TSP-PF | Jean Coutu, Pharmaprix, Canadian Tire | $5–15 | | Kilz Original (oil-based primer) | Seal odour-emitting soot residues before repainting | Home Depot, Rona | $25–45/gallon | | Microfibre cloths (large supply) | Multiple passes needed — never reuse a sooty cloth | Dollarama, Canadian Tire | $8–12/pack |
Safety note: TSP-PF is an industrial-strength cleaner. Always wear an N95 mask and nitrile gloves. Ensure the kitchen window is open with a fan pushing air outward before mixing. Never mix TSP-PF with bleach.
Step-by-Step Cleanup Protocol
Step 1: Dry soot removal (always before wet cleaning)
Run a HEPA vacuum over all surfaces — ceiling, walls, cabinet fronts, stovetop — using the brush attachment. Then use a dry soot sponge (chemical sponge, a specialized product that lifts soot without smearing) to wipe the ceiling in long parallel strokes. Never use a damp cloth for the first pass — moisture mixes with dry soot and drives it into the surface, creating permanent grey staining that is extremely difficult to remove afterward.
Step 2: Cast-iron gas grates
Lift the grates off the burners. Fill a large pot with water, bring to a boil, add 2–3 tablespoons of baking soda. Submerge the grates and simmer for 20–30 minutes — the alkaline boiling water dissolves carbonized grease without damaging the cast iron. For stubborn deposits, make a paste of baking soda and a few drops of dish soap, apply with a stiff nylon brush (not steel — steel scratches cast iron), and rinse. Dry thoroughly and re-season lightly with a thin coat of vegetable oil before replacing to prevent rust.
Step 3: Stovetop surface
For stainless steel or enamel stovetops: apply a generous squirt of Dawn dish soap directly to the surface, spread with a damp non-scratch sponge, let dwell 5 minutes, then scrub. Rinse with a clean damp cloth, repeat as needed. For baked-on black carbon rings around gas burner ports, use a toothpick or interdental brush to clear the ports, then wipe with a soapy cloth.
Step 4: Backsplash tiles
Dish soap and hot water works well on glazed ceramic or porcelain backsplash tiles. Apply with a sponge, let dwell 2 minutes, scrub with a non-scratch pad, rinse. For grout joints, which absorb soot deeply, make a baking soda paste (baking soda + dish soap + a few drops of water), work into grout with an old toothbrush, let dwell 5 minutes, rinse. Repeat if grout is still visibly dark.
For heavy soot on tile, use diluted TSP-PF (30 mL per litre of warm water), apply with a barely-damp sponge, rinse quickly with clean water. TSP-PF can dull non-glazed or matte-finish tiles — test in a hidden corner first.
Step 5: Walls and ceiling
This is the most labour-intensive zone. Work in sections, top to bottom.
Light soot (grey film, no thick deposits): Mix 1 tablespoon of dish soap in 1 litre of warm water. Wring out the cloth well so it is barely damp. Wipe in long horizontal strokes, changing cloths frequently.
Heavy soot (thick black-brown deposits near the stove): Use TSP-PF. Mix 30 mL (2 tablespoons) per litre of warm water in a bucket. Wear N95 + nitrile gloves. Apply with a barely-damp cloth in long parallel strokes — never scrub in circles, which spreads soot. Rinse immediately with a clean damp cloth. Allow to dry completely.
Montreal plaster walls (pre-war triplexes in NDG, Plateau, Rosemont, Villeray, HoMa): Use a barely-damp cloth — never soak plaster walls. Wet plaster can delaminate from the lath beneath. If the surface feels soft or bubbles when touched, stop and allow it to dry for at least 48 hours before attempting further cleaning.
Step 6: Cabinet exteriors
Mix equal parts white vinegar and warm water. Apply with a cloth, let dwell 1–2 minutes, wipe off. For painted wood cabinets, test in a hidden corner first — high acid concentrations can affect some paint finishes. For melamine (laminate-face) cabinets — common in 1970s–1990s Montreal rental kitchens — diluted dish soap + water is safer than vinegar.
Step 7: Floor
Mop with hot water and dish soap. Change the mop water frequently — grease from the floor will re-contaminate the mop rapidly. Rinse with clean water. For original hardwood floors, use the same pH-neutral protocol as regular hardwood cleaning (see our [hardwood floor cleaning guide](/en/blog/how-to-clean-hardwood-floors-montreal)) — minimize water contact and dry immediately.
Montreal Housing-Type Protocols
Pre-war triplex gas stove without range hood (NDG, Plateau, Rosemont, Villeray, HoMa): This is the worst-case scenario for grease fire cleanup. Without a range hood to capture combustion gases, the soot immediately rolls to the ceiling and all four walls of the kitchen. The wall opposite the stove often accumulates nearly as much soot as the stove wall itself due to convection rebound. Budget 4–8 hours for a thorough kitchen cleanup, or consult a [professional deep cleaning service](/en/services/deep-cleaning).
1960s–1990s rental with vented range hood: The hood captured the first wave of combustion gases, so ceiling and far-wall soot deposition is lighter. However, the hood filter is now saturated with burnt grease — remove the filter, soak it in boiling water + dish soap for 30 minutes, or run it through the dishwasher if it is metal mesh. If the hood has a charcoal filter, replace it before using the hood again.
Modern condo (Griffintown, Square-Victoria, Downtown, Plateau): Check your DCC (declaration of co-ownership) — many condo boards require owners and tenants to notify the syndicate of any fire event, even a minor kitchen fire. The forced-air HVAC system shared between units may have circulated soot-laden air into adjacent suites through shared ductwork. Check HVAC supply vents for grey residue and replace the HVAC filter before running the system again.
TAL and Insurance: What You Need to Know
Tenant responsibility (Article 1855, Civil Code of Quebec): A tenant who accidentally starts a kitchen fire is responsible for the cost of cleaning and repairing the damage to the landlord's property — including walls, ceiling, and cabinetry.
Landlord responsibility (Article 1854): If the fire was caused by a defective appliance that the landlord was obligated to maintain (for example, a faulty gas line connection or a range hood that was inoperative), the landlord may share responsibility.
Document everything before cleaning: Keep dated photos of every affected surface and receipts for all cleaning supplies. If you file a tenant insurance claim, your insurer will likely require a professional assessment before authorizing payment — do not repaint or make structural repairs until the insurance adjuster has visited.
Quebec tenant insurance: Most tenant insurance policies in Quebec (Desjardins, Intact, Aviva, La Capitale) cover accidental fire damage to the landlord's property, typically up to $100,000. Contact your insurer on the same day as the fire — your policy requires prompt reporting.
How to Eliminate Smoke Odour After a Grease Fire
Grease fire smoke contains acrolein, aldehydes, and polyaromatic hydrocarbons that penetrate porous surfaces and re-emit for days. After completing the surface cleaning protocol above:
1. Baking soda on soft surfaces: Scatter baking soda liberally on carpets and upholstery near the kitchen. Let sit for 2–4 hours, then vacuum. 2. Ventilation: Run an exhaust fan or window fan (pointed outward) for at least 24 hours. 3. HEPA air purifier: If available, place in the kitchen to capture residual fine particles. 4. Primer before repainting: Apply a coat of Kilz Original (oil-based, Home Depot/Rona $25–45/gallon) to any walls or ceiling you plan to repaint — this seals odour-emitting residues that water-based paint alone will not contain. This is the same primer used for cigarette smoke odour in Montreal triplexes. See our detailed guide to [removing smoke smell from an apartment](/en/blog/how-to-get-rid-of-cigarette-smell-in-montreal-apartment) for a full protocol.
When to Call a Professional
Contact a professional cleaning service or fire restoration company if: - The fire blackened more than half the kitchen ceiling. - Soot spread beyond the kitchen into adjacent rooms. - The HVAC was running during the fire (soot may be in the ductwork). - You have a confirmed insurance claim (most insurers require professional documentation for fire-damaged surfaces). - The fire caused blistering or cracking of plaster or drywall. - The smoke odour persists more than 24 hours after cleaning.
For Montreal, look for IICRC S700-certified fire restoration companies, or contact Sparkling Stays for a professional [deep cleaning](/en/services/deep-cleaning) or [home cleaning](/en/services/home-cleaning) assessment — we serve NDG, Plateau, Rosemont, Villeray, HoMa, Griffintown, Downtown, and the surrounding area.
Prevention: Avoiding a Grease Fire in a Montreal Apartment Kitchen
- Keep a box of baking soda next to the stove at all times — it is your most effective first-response tool.
- Never leave oil heating on the stove unattended.
- If deep-frying, use a thermometer — most cooking oils reach their smoke point between 210°C and 230°C.
- Clean range hood filters monthly; accumulated grease in an unmaintained filter is highly flammable.
- Replace a cracked or damaged pot handle immediately — a dropped pot of hot oil is a leading cause of grease fires.
- Keep combustibles (paper towels, kitchen towels, cardboard boxes) well away from burners.
Frequently Asked Questions
Q: Is it safe to cook again immediately after a grease fire cleanup?
A: Only when you are completely satisfied that all soot, grease residue, and smoke odour have been removed. Residual grease on cast-iron grates or inside burner ports can reignite when heated. If the range hood was running during the fire, replace the filter before using it again.
Q: Why should you never use water or flour to extinguish a grease fire?
A: Water vaporizes instantly when it contacts burning oil, creating a violent steam explosion that sprays burning oil across the kitchen and can cause severe burns. Flour creates an airborne combustible cloud that can deflagrate. The correct suppression method is a metal lid to cut off oxygen (for fires contained to a pan) or baking soda for moderate flare-ups. If the fire is uncontrollable, evacuate immediately and call 9-1-1.
Q: What is the correct order for cleaning surfaces after a grease fire?
A: Always dry-clean before wet-cleaning. First, vacuum with a HEPA vacuum, then wipe with a dry soot sponge (chemical sponge) to lift loose soot from walls and ceiling without moisture. Only after removing the dry soot should you apply a wet cleaner — dish soap and water for light residue, TSP-PF (Canadian Tire, Rona, Home Depot) for heavy grease-soot deposits on plaster or drywall. Applying water first drives soot deeper into porous surfaces and creates permanent grey staining.
Q: Who is responsible for cleaning costs after a kitchen fire in a Quebec rental?
A: Under Quebec's Civil Code (Article 1855), a tenant who accidentally causes a fire is responsible for cleaning and repair costs to the landlord's property. However, if the fire resulted from a defective appliance the landlord was responsible for maintaining (Article 1854), the landlord may share liability. Document all damage with dated photos before cleaning and contact your tenant insurance (Desjardins, Intact, or Aviva) immediately — most Quebec tenant insurance policies cover accidental fire damage up to $100,000.
Q: How do I eliminate the persistent smoke smell after a kitchen grease fire?
A: Grease fire smoke contains acrolein and aldehydes that penetrate porous surfaces and off-gas for days. After thorough surface cleaning, apply baking soda to carpets and soft furnishings, leave 2–4 hours, then vacuum. For walls and ceiling, apply a coat of Kilz Original oil-based primer (Home Depot, Rona) before repainting — this seals odour-emitting residues that standard latex paint alone will not contain. Run a window fan pointed outward for at least 24 hours. See our full [smoke smell removal guide](/en/blog/how-to-get-rid-of-cigarette-smell-in-montreal-apartment) for a detailed Montreal protocol.
Q: When should I call a professional fire restoration company instead of cleaning myself?
A: Contact a professional if the fire blackened more than half the kitchen ceiling, if soot spread to adjacent rooms, if the HVAC was running during the fire, if you have an insurance claim in progress, or if the smoke odour persists more than 24 hours after cleaning. For Montreal, ask your insurer (Desjardins, Intact) for IICRC S700-certified fire restoration vendors, or contact Sparkling Stays for a deep clean assessment.
