Commercial Door Winter Maintenance Checklist for Ontario Businesses (2026)

Winter is the hardest season on commercial doors in Ontario. Salt, slush, freezing rain and sharp temperature swings hit storefronts, office entrances, warehouse doors and fire exits all at once, usually when your business is busiest. Most of the emergency calls we get between December and March could have been avoided with a short inspection in the fall.

This checklist is what our technicians look at when a property manager or business owner asks us to get their doors ready for winter. Use it yourself, hand it to your maintenance staff, or book us to do it. Either way, your doors will open, close and lock properly when it is minus 20 outside.

Why commercial doors fail in an Ontario winter

Salt and moisture

Road salt tracked in on boots collects at thresholds, floor closers and the bottom of steel doors and frames. It speeds up rust, seizes pivots and eats weatherstripping.

Freeze-thaw movement

Concrete slabs and frames move as the ground freezes and thaws. A door that latched perfectly in October can start rubbing or missing the strike by January.

Cold-stiffened hydraulics

Door closers use hydraulic fluid that thickens in the cold. Exterior doors close more slowly, fail to latch, or slam when the closer is adjusted badly to compensate.

Heavier traffic and wind

Holiday traffic and strong winter winds put extra strain on hinges, pivots and closer arms. Wind catching an open door is one of the most common causes of bent arms and torn hinges.

The winter commercial door checklist

Work through each door type below. Anything marked as a technician job should not be adjusted by untrained staff, especially on fire and exit doors.

1. Storefront and aluminum glass doors

• Check the door does not drag on the threshold or rub the frame
• Lift the handle: if the door moves up and down, pivots are worn
• Confirm the lock throws fully into the strike without pushing the door
• Look for oil around floor closers and check the door closes from fully open
• Inspect weatherstripping and the bottom sweep for gaps

Pivot, closer and lock problems are technician jobs. See our commercial door closer repair service.

2. Hollow metal steel doors and frames

• Look for rust at the bottom edge of the door and the base of the frame
• Check hinges for loose screws and the door for sagging at the latch side
• Make sure the door closes and latches on its own from any position
• Replace torn door sweeps and worn weatherstripping

Rusted or bent steel doors and frames can often be repaired. Learn more about hollow metal and steel door repair.

3. Fire doors and exit doors

• Every fire door must close and latch by itself, every time
• No wedges, mats or hold-opens that are not connected to the fire alarm
• Exit devices must release with a single push and relatch fully
• Look for damage to the door, frame, hinges and labels

Fire and exit doors are covered by the Ontario Fire Code and must be inspected and kept in working order. The province’s Ontario Fire Code regulation sets out the requirements. For repairs see panic bar and exit device repair.

4. Automatic doors and accessible door operators

• Test the push plates or sensors from both sides
• Check that the door opens fully and stays open long enough
• Watch for slow opening, stalling or doors that reverse unexpectedly
• Keep sensors and floor areas clear of snow and ice build-up

Accessible entrances must keep working through the winter. Our technicians repair and install operators through our automatic door repair service.

5. Overhead, roll-up and loading dock doors

• Listen for grinding or straining when the door opens
• Check springs, cables and rollers for wear or fraying
• Make sure bottom seals are intact so snow and cold stay out
• Test safety reversing on motorized doors

Spring and cable work is dangerous and always needs a technician. See overhead and roll-up door repair and loading dock door repair.

Winter door problems: quick fix or call a technician?

Door closer settings for winter

Closers have three main adjustments: sweep speed, latch speed and back-check. In winter, cold fluid slows the closer down, so exterior doors may stop just short of latching. The fix is a small latch-speed adjustment by someone who knows the closer, not cranking the valves wide open. Over-adjusted closers slam in spring and wear out faster.

Signs a closer needs replacing, not adjusting

• Oil leaking from the closer body
• No change when the valves are adjusted
• The door swings freely with no resistance
• A bent arm or loose mounting that keeps coming back

What a professional winter inspection includes

When we inspect a building, we check every door on the same visit and give you a written list of what needs attention now and what can wait. A typical inspection covers:

1. Closers: adjustment, leaks, arms and mounting
2. Hinges and pivots: wear, sagging and fasteners
3. Locks, strikes and exit devices: latching and release
4. Weatherstripping, sweeps and thresholds
5. Automatic operators and accessible door controls
6. Fire door self-closing and latching
7. Overhead and loading dock door safety

Many repairs are done on the spot. Larger work is quoted on the same visit. Ask about our current service coupons.

Winter door priorities by type of business

Every building has different weak points. These are the doors we see fail most often in each type of property.

Retail stores and plazas

The front storefront door takes the most abuse: constant traffic, salt on the floor and staff propping it open during deliveries. Worn bottom pivots and leaking floor closers are the classic winter failures, along with locks that will not throw at closing because the door has dropped. Check the rear delivery door too. It is often a steel door with a tired closer and a weak latch, and it is the door thieves try first.

Restaurants and food service

Kitchen back doors open constantly and are often wet and greasy. Hinges tear out of frames, closers lose oil and sweeps wear through. A back door that will not close properly also lets in cold air and pests. Make sure the exit hardware on the dining room side still releases cleanly and that nobody has added a deadbolt to a required exit.

Office buildings and condo lobbies

Lobby entrances usually have overhead concealed or floor closers, accessible door operators and access control. Cold weather exposes weak operators and mis-set closers, and a lobby door stuck open drains heat from the whole floor. Stairwell and corridor fire doors must still self-close and latch, even when residents prefer them propped open.

Warehouses and industrial units

Overhead doors, loading dock doors and man doors in exposed locations take the brunt of wind and snow. Bottom seals, springs and cables are the priority, followed by steel man doors rusting at the base. A dock door that will not close fully costs money in heating every hour.

Medical clinics, schools and public buildings

Accessible entrances are essential here, so automatic operators and push plates should be tested before the cold sets in. Fire and exit doors in corridors and stairwells need to be checked against the Fire Code, and panic hardware must release with one push.

What it costs to wait until something breaks

An emergency call on a January night is the most expensive way to fix a door. On top of the repair itself, a door that will not lock means staff waiting on site, a door that will not close means lost heat, and a failed exit device can mean a compliance problem during an inspection. Most of those failures start as small issues that a fall inspection would catch: a closer starting to leak, a pivot starting to wear, a sweep that has torn. Fixing them early is faster, cheaper and planned around your business hours.

Who we work with

We work for retail stores, restaurants, plazas, office buildings, medical clinics, schools, condo corporations, warehouses and industrial units. Our team handles commercial door repair and replacement, from a single storefront to a full building. Learn more about us.

Commercial door service areas

We serve Toronto and the GTA plus surrounding regions, including Vaughan, Mississauga, Brampton, North York, Richmond Hill, Thornhill, Woodbridge, Hamilton, Burlington, Milton, Whitby, Barrie, Kitchener, Waterloo, Cambridge, Guelph. See the full list on our areas we serve page.

Winter commercial door FAQ

When should we book a winter door inspection?

October and November are ideal, before the first deep freeze. If you missed that window, an inspection in early winter still prevents most emergency calls.

Can we prop exterior doors open to save the closer?

Not on fire or exit doors, and not on doors that need to stay secure. Propping doors open also wastes heat and lets salt and snow inside.

Why does our door close fine in summer but not in winter?

Cold thickens closer fluid and frames shift with frost. A small latch-speed adjustment usually solves it. If not, the closer may be worn out.

Do you repair accessible door operators?

Yes. We repair and install automatic and accessible door operators across Ontario. See automatic door repair.

Do you offer emergency service for businesses?

Yes. A door that will not lock or close is a security risk, so we prioritise it. Call 647-931-0097.