Commercial & Industrial · Code-driven
Wood Fire-Rated Doors
Mineral-core wood fire doors for the openings that have to be fire-rated and still look like the building — hotel and condo suite entries, hospital and office corridors, classrooms and boardrooms. Veneer or laminate faces, labelled assemblies, hung in steel frames. Toronto and the GTA.
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Labelled mineral-core assemblies · since 1979 · veneer matched to the millwork
A fire-rated door in finished space has two jobs that pull against each other: satisfy the fire separation, and look like it belongs in a hotel corridor, a hospital wing or an office floor. That is what a mineral-core wood door is for — the certification lives in the core, and the face is veneer or laminate chosen to match everything around it.
Canuck Door Systems supplies and installs labelled wood assemblies across the GTA, usually a floor or a building at a time: suite entries, corridor and cross-corridor doors, classrooms, boardrooms and back-of-house openings in finished space. The door, the steel frame and the hardware come from us as one assembly, so the label covers the opening and not just the leaf.
Where fire-rated wood doors belong
Hotel & condo suite entries
Fire-rated at the corridor, finished on the suite side, and hung in the hundreds.
Office corridors
Cross-corridor and tenant-entry doors in a fire-rated separation.
Hospitals & clinics
Corridor and department doors where the rating and the finish both matter.
Schools & universities
Classroom and stair-lobby doors that have to survive students and inspections.
Boardrooms & meeting spaces
Where the door is a piece of the interior and still sits in a fire-rated wall.
Long-term care & retirement
Resident-room doors, where the finish is part of a domestic feel.
Libraries & public buildings
Openings on the exit path that also have to look like the architecture.
Back-of-house in finished space
Service and storage doors flush with the corridor wall, fire-rated and unremarkable.
Core, face and edge — what you are actually specifying
| Element | Options | What it decides |
|---|---|---|
| Core | Mineral (fire-rated), particleboard, stile-and-rail | Whether the door can carry a label at all |
| Face | Plastic laminate, standard veneer, premium veneer | Appearance, durability, and most of the cost |
| Veneer match | Book, slip or random; sequence-matched sets | Whether a corridor reads as one set or as a collection |
| Edges | Hardwood or fire-rated composite | Hardware holding, damage resistance, and the listing |
| Finish | Factory or site | Consistency, schedule, and how the door ages |
| Glazing | Fire-rated lite kits with ceramic glass | Sight lines, and how much of it the rating permits |
A mineral core is softer than a particleboard one. That is why hardware reinforcement is built in at the factory, and why a lock changed on site with a hole saw is a door written off — the fixings have nothing to hold onto and the label is gone either way.
Wood or steel for this opening?
The decision is usually made by which side of the building the door is on.
- Finished, public-facing space — corridors, suites, offices, patient rooms: wood, because the door is part of the interior.
- Back-of-house, service and exterior — stairs, mechanical rooms, garages, loading: steel, because the door is a tool and takes abuse.
- High ratings and temperature rise — 180-minute separations and stair doors with a temperature-rise limit: steel, where those listings live.
- Washdown and wet areas — kitchens and processing: neither; that is stainless territory.
The steel side of the same product line is on metal & steel fire-rated doors.
What we do
- Supply and install labelled assemblies — mineral-core doors, labelled steel frames, hardware and fire-rated glazing, specified against the separations on the drawings.
- Match an existing floor — species, cut and finish matched as closely as the original allows, with an honest answer where it cannot be.
- Replace failed and damaged fire-rated doors — including doors that have been drilled, trimmed or refaced and can no longer be certified.
- Repair within the listing — hardware, closers, latches, clearances and frame corrections that bring an opening back into compliance.
- Work occupied buildings — a corridor or a floor at a time, out of hours where the building needs it.
Wood door work across the GTA
Recent wood-door jobs from our own records, listed as client and date — documented as dated job folders in the company photo library rather than as written project briefs.
- Keogh ConstructionFebruary 2026
- ONIT ConstructionJanuary 2026
- HN Construction Ltd.December 2025
- Tri-Phase GroupMarch 2025
- Primary Construction Inc.December 2024
- St. Cuthbert's Presbyterian ChurchOctober 2024
Four decades of doors for names Ontario knows — Canada’s Wonderland, Tim Hortons, Canadian Tire, the LCBO, Metrolinx, Marriott & Hilton hotels, the University of Toronto — plus thousands of businesses across the GTA. Dependable people, quality products, since 1979.
Wood fire door supply & installation across the GTA
We supply and install labelled wood assemblies across the core GTA and the Southern Ontario belt from our Mississauga shop — most often as a floor or a building's worth of suite and corridor doors rather than as single openings.
Core GTA
- Toronto
- Mississauga
- Brampton
- Vaughan
- Markham
- Scarborough
- North York
- Etobicoke
- Richmond Hill
- Oakville
- Burlington
- Milton
Southern Ontario belt
Not on the list? A hotel or condo floor's worth of fire-rated doors is worth the trip anywhere from Niagara to Barrie. Call and ask. See all service areas
What a fire-rated wood door costs
Fire-rated wood doors are priced by the core, the face and the hardware — and the face is where the money goes visible. What moves the number:
- The rating — 20, 45, 60 or 90 minutes, which sets the core
- Face — plastic laminate, standard veneer, or a premium or matched veneer
- Whether the veneer has to be sequence-matched across a floor or a pair
- Factory finishing versus site finishing, and the stain or paint specified
- Fire-rated glazing — vision lite size and the ceramic glass it needs
- Hardware, including electrified locks on hotel and suite doors
- The frame — reusing a labelled steel frame, or supplying new
- Quantity and access, and whether the building stays occupied through the work
Nothing on a labelled wood door can be trimmed on site beyond the small allowance the listing gives. Undersize openings are handled at the order stage, not with a saw.
Common questions
Can a wooden door be fire-rated?
Yes, and fire-rated wood doors are used throughout hotels, condos, hospitals and schools. The rating comes from the core rather than the face: a mineral core — a non-combustible board made from mineral fibre — sits behind the veneer or laminate, with fire-rated edges and blocking around it. The result is a labelled assembly that carries a certification mark exactly like a steel one, while looking like the millwork around it.
What ratings do wood fire doors come in?
20, 45, 60 and 90 minutes cover essentially all commercial wood doors. Higher ratings, and openings that also need a temperature-rise limit, are usually met in steel instead. If the drawings call for 3 hours, expect a hollow metal assembly rather than wood.
What is a mineral core?
A non-combustible core board of mineral fibre, used in place of the particleboard or stile-and-rail core in an ordinary commercial wood door. It is what lets the door hold a rating. It is also softer and heavier than a particleboard core, which is why fire-rated wood doors need their hardware reinforcements built in at the factory and why cutting one on site is not an option.
Can a fire-rated wood door be cut down to fit?
Only within the small trim allowance the listing gives — typically a fraction of an inch at the bottom, and nothing at the stiles or top rail unless the manufacturer's listing says otherwise. Trimming past that exposes the core and voids the label. Undersize or non-standard openings are handled by ordering the door to size, which is why the measure matters more here than on an unrated door.
Can fire-rated wood doors have vision lites?
Yes, with fire-rated glazing in a listed lite kit, factory-installed. The permitted glazed area shrinks as the rating rises, so a 20-minute corridor door can carry a generous lite while a 90-minute door is limited to a narrow one. Cutting a lite into a labelled door after the fact is not permitted — the opening is part of the listing.
Will the veneer match our existing doors?
Usually, and it is worth planning. Veneers are specified by species, cut and match, and can be sequence-matched across a run so a corridor of doors reads as one set. Where an existing building is being extended or partially refurbished, an exact match to doors from a decade ago is not always possible — in that case we will say so and suggest matching a floor at a time rather than pretending.
Do wood fire doors need steel frames?
In commercial work, almost always — a labelled hollow metal frame is the normal partner for a fire-rated wood door, and the assembly is listed that way. Fire-rated wood frames exist and are used where the architecture calls for them, but they are a specialty item. Either way, the frame has to be labelled: a fire-rated leaf in an unrated frame is not a fire-rated opening.
How long does it take to get wood fire-rated doors?
If the labelled door is a standard size, it takes 1–2 weeks to prepare the hardware and install it. If the door is a custom size or needs specific hardware, it can take 8–12 weeks to produce it and source the hardware. Then 1–2 weeks to schedule the job and install them, depending on the size of the project. Factory-finished and matched-veneer doors sit at the longer end, because the finishing is part of the fabrication rather than something done on site. On site, a single labelled opening is usually a day; a building's worth of suite doors is phased over several weeks.
Fire-rated doors that have to look like the building?
Send us the door schedule or the finish you have to match and we'll quote the assemblies — core, face, hardware and frame together.