Fire-Rated Doors in Mississauga
Labelled steel and wood fire doors for Mississauga — supplied as complete assemblies with their frames and hardware, installed, inspected against NFPA 80 and repaired within the listing. From our shop at 14-1645 Bonhill Road, Mississauga.
Fire-rated doors we've installed and serviced in Mississauga — for Gemini Property Investments Inc, Cracovia Square Inc, Peel Condominium Corporation No. 423, Cintex International Canada LTD, Ran Foods Inc — among many more businesses here. Dependable people, quality products, since 1979.
Recent fire-rated door projects in Mississauga and surrounding areas

Hollow metal doors & frames
Paula Dale Limited

Hollow metal doors & frames
Carpentry Canada Ltd

Wood doors
Tri-Phase Group
Written up in full
- Plaza Storefront Replacement in Mississauga: 9 Aluminum Openings and 4 Fire-Rated Steel Doors for ICNA Relief Canada
Nine aluminum storefront openings and four fire-rated steel doors across an occupied Mississauga plaza, in thermally broken HERD framing.
Fire-Rated Doors across Mississauga
We work throughout Mississauga — Airport Corporate Centre, Meadowvale Business Park, Dixie-Britannia, Sheridan Park and the blocks around them. The buildings here are mostly logistics and warehousing, pharmaceutical and aerospace, and each puts different demands on a door: traffic volume, insurance and fire requirements, and how much downtime an opening can afford. Mississauga’s 717,961 residents keep those buildings busy.
We have completed 11 fire-rated door jobs in Mississauga since 2020.
- Population
- 717,961
- Main industries
- logistics and warehousing, pharmaceutical, aerospace and food processing
- Building stock
- logistics and warehousing facilities, food processing and cold storage facilities, light industrial and flex parks and power centres and regional malls
- Business parks
- Airport Corporate Centre, Meadowvale Business Park, Dixie-Britannia and Sheridan Park
- Serving since
- 1979
- Airport Corporate Centre
- Meadowvale Business Park
- Dixie-Britannia
- Sheridan Park
- Gateway
- Malton
Broken fire-rated doors in Mississauga: we dispatch 24/7.
Our shop, our door stock and our service trucks are all in Mississauga — on 1645 Bonhill Road, minutes from most of the city.
Emergency board-up, security and make-safe first — permanent repair scheduled after.
The two fire-rated doors a building in Mississauga uses — steel and wood
A fire door is not a door with a rating written on it. It is a tested assembly — leaf, frame, hinges, closer, latch and any glazing — certified together by a body such as ULC or UL, and it performs as certified only while every part of it stays as it was listed. Which of the two materials goes into a given Mississauga opening is settled by where the door sits in the building rather than by budget: steel where the door is a tool, mineral-core wood where the door is part of the interior.
Where a building in Mississauga carries fire-rated openings
The rating belongs to the wall first. The Ontario Building Code assigns a fire-resistance rating to a fire separation, and the closure in it — the door — gets a matching rating. In Mississauga that lands on the same handful of openings in almost every building, and the count is usually higher than the owner expects.
Related fire door work in Mississauga
Fire-rated openings for the work Mississauga buildings do
The sectors that dominate Mississauga — logistics and warehousing, pharmaceutical, aerospace — each put fire-rated doors in different places.
Logistics and warehousing
The separation here is between the racked floor and the office block: cross-corridor and office-entry doors in a fire-rated wall, and a shipping opening usually too wide for a leaf, which closes on a rolling fire shutter instead. What fails is a frame knocked out of line by a pallet truck until the latch stops throwing.
Pharmaceutical
The rating sits on the separation between production and the rest of the plant, and it has to survive washdown and a sanitation schedule. Gasketing painted over or torn out during cleaning is the commonest deficiency, and putting it back is a listing question rather than a maintenance one.
Aerospace
The walls that carry a rating are the ones around the process area and the electrical room, and the doors in them are steel because the leaf is in a plant. The recurring finding is a fire-rated door propped open for airflow or cable runs — the legal version of that is a magnetic hold- open tied to the alarm.
Corporate offices
Stair doors are the largest single group in the building, floor by floor, usually temperature-rise rated and on exit devices. After a fit-out the two findings are always the same: a card reader drilled into a fire-rated leaf, and clearances thrown out by a new floor finish.
Hotels & hospitality
Guest-room doors are fire-rated at the corridor and finished on the guest side, hung by the hundred, so a floor is refurbished as a set rather than a door at a time. The kitchen and servery pass-throughs are the wide openings, and those close on shutters.
General contractors & new builds
Fire-rated openings are scheduled against the fire separations on the drawings, with the hardware settled before fabrication because nothing can be prepped afterwards. Fire-rated doors are made to order, so the shop sets the date and the install follows it.
Get a fire-rated opening quoted in Mississauga
Tell us the opening, the rating if you know it, and whether the frame is staying. If you are working from a deficiency list, send it — we quote from those every week. For urgent make-safe work, call 800-522-6825.
Common questions about fire-rated doors
What is a fire-rated door?
A complete assembly — door, frame, hinges, closer, latch and any glazing — tested and certified to hold a fire back for a set time. It carries a label from a certification body such as ULC or UL, and the label belongs to the whole assembly rather than to the leaf. Change one certified part for an uncertified one and the opening is no longer fire-rated, which is why fire doors are specified as assemblies and never assembled from spare parts.
What fire ratings do doors come in?
20, 45, 60, 90 and 180 minutes are the standard ratings. Which one an opening needs is set by the fire separation it sits in, not by preference: the Ontario Building Code assigns a fire-resistance rating to the wall, and the door in it gets a matching closure rating. Some openings, notably in exit stairs, also carry a temperature-rise limit so the far face of the door stays cool enough to pass.
What makes a fire door fail an inspection?
Almost always the things people do to make a door convenient. Held open with a wedge or a hook, painted over or missing labels, a closer removed or disconnected, a latch that does not throw, gaps at the frame outside the permitted range, holes drilled for a new lock or card reader, and glazing or kick plates that were never part of the listing. Fire and structural damage show up too, but the common failures are alterations, not accidents.
Fire-Rated Doors nearby
Full product details: Fire-Rated Doors
