Fire-Rated Doors in Newmarket
Labelled steel and wood fire doors for Newmarket — 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.
Hollow metal doors and frames we've installed and serviced in Newmarket — for Old Flame Brewing Co, Cambria Design Build Ltd, Bird Mechanical Ltd, CL Design, Mecsmart Systems Inc, Hillhurst Home Renovations Inc — among many more businesses here. Dependable people, quality products, since 1979.
Recent fire-rated door projects in Newmarket and surrounding areas

Hollow metal doors & frames
CL Design

Hollow metal doors & frames
Artyan Group

Hollow metal doors & frames
New Apostolic Church Canada
Fire-Rated Doors across Newmarket
We work throughout Newmarket — Newmarket Industrial Park, 404 Employment Area, Mulock Employment Area, Yonge Street Corridor and the blocks around them. The buildings here are mostly health sciences and healthcare, public sector administration and light manufacturing, and each puts different demands on a door: traffic volume, insurance and fire requirements, and how much downtime an opening can afford. Newmarket’s 87,942 residents keep those buildings busy.
- Population
- 87,942
- Main industries
- health sciences and healthcare, public sector administration, light manufacturing and business and professional services
- Building stock
- warehouse and distribution facilities, light manufacturing plants, industrial flex units and regional shopping centres and retail plazas
- Business parks
- Newmarket Industrial Park, 404 Employment Area, Mulock Employment Area and Yonge Street Corridor
- Serving since
- 1979
- Newmarket Industrial Park
- 404 Employment Area
- Mulock Employment Area
- Yonge Street Corridor
- Davis Drive Corridor
Broken fire-rated doors in Newmarket: we dispatch 24/7.
Newmarket is roughly a 55-minute run from our Mississauga shop — less if a technician is already in the area — so a truck is usually on site the same day.
Emergency board-up, security and make-safe first — permanent repair scheduled after.
The two fire-rated doors a building in Newmarket 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 Newmarket 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 Newmarket 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 Newmarket 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 Newmarket
Fire-rated openings for the work Newmarket buildings do
The sectors that dominate Newmarket — health sciences and healthcare, public sector administration, light manufacturing — each put fire-rated doors in different places.
Health sciences and healthcare
Smoke and fire compartments cut the floor plate into sections, and those doors have to work for a bed and a crash cart as well as for the separation. Cross-corridor pairs run on hold-opens tied to the alarm, and the finished wings take wood because the door is part of the ward.
Light manufacturing
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.
Retail trade
A unit in a plaza or mall carries fire-rated openings the tenant never thinks about: the back-of-house door onto the service corridor, the stock-room separation, and the mall front itself, which on a fire-rated common area closes with a shutter or curtain on alarm rather than with the shopfront glass.
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.
Logistics & 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.
Food & pharma processing
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.
Get a fire-rated opening quoted in Newmarket
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
Can you repair a fire door, or does it have to be replaced?
Many deficiencies are repairable within the listing — replacing a closer or latch with a certified equivalent, refitting hardware, correcting clearances, repairing a frame, and re-labelling in some cases. What cannot be repaired is an unauthorised field modification: a hole cut for a lock, a lite kit added after the fact, or a leaf cut down to fit a new floor. Those are replacement, because there is no legitimate way to restore the listing.
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.
How long does a fire-rated door take?
Typically 4–6 weeks to produce a labelled door and frame once the shop drawings are approved, then 1–2 weeks to schedule the job and install it, depending on the size of the project. Certified assemblies are made to order with the hardware prep in the leaf, so the schedule is set by the fabrication rather than the installation. Inspections and most repairs, by contrast, are scheduled in days. Hanging a single labelled door and frame is usually a day on site; a building's worth of rated openings on a new build is scheduled over several weeks with the general contractor.
Fire-Rated Doors nearby
Full product details: Fire-Rated Doors
