A Calgary office building needs a different cleaning scope from about November to April. The core of a winter checklist is entrance control (more matting, swapped more often), daily removal of gravel and de-icer residue from hard floors, a plan for chinook melt days when entrances turn wet in a few hours, and extra attention on the corridors and lobbies that carry Plus 15 traffic.
The list below is split by frequency so you can compare it against your current cleaning contract and spot what is missing before the first deep freeze.
Why Calgary winters are hard on interior floors
Two things set Calgary apart from most Canadian cities. First, the city and many private lots rely heavily on crushed gravel mixed with salt or de-icer for traction. Gravel is sharp, it embeds in boot treads, and it scratches finished floors like sandpaper once it gets past the mats. Second, chinook winds can lift the temperature well above freezing in an afternoon and drop it again overnight. Each swing melts packed snow in parking lots and sidewalks, which means slush and grit come through the doors in waves rather than at a steady rate.
Dry air between storms adds a third issue: fine dust from dried de-icer and ground-down gravel that settles on ledges, vents and electronics. A summer scope with a weekly dust round will fall behind by January.
Entrances and vestibules
This is where most of the winter budget should go, because every particle stopped at the door is one the floor crew does not have to remove from the lobby.
Every cleaning shift
- Vacuum all entrance mats, including the scraper mats outside and the wiper mats inside the vestibule.
- Dry mop or auto-scrub the vestibule floor and the first 5 to 10 metres of lobby.
- Wipe door glass, push plates and handles; slush spray and fingerprints build up fast.
- Empty and clean any boot trays or umbrella stands.
- Check that mats lie flat with no curled edges (a trip hazard on a wet floor).
During and after a storm or a chinook melt
- Add day porter rounds on the main entrance, every 1 to 2 hours during the worst of it.
- Place wet floor signs before puddles form, not after.
- Swap saturated mats for dry ones if the vendor or matting service provides spares.
Weekly
- Deep clean or extract mats (or confirm the rental service is swapping them on schedule).
- Clean the floor under the mats, where grit collects and grinds into the finish.
A common rule of thumb in the matting industry is that a person needs several steps on matting to leave most of the dirt behind. Many Calgary lobbies have a single short mat sized for summer, so adding length at the main doors for the season is often the cheapest improvement available.
Hard floors: gravel and de-icer residue
Calcium chloride and salt leave a white film that dulls finish and, left long enough, softens and damages it. Gravel scratches it. The checklist:
Daily
- Dust mop with a treated mop or vacuum hard floors before wet cleaning, so gravel is lifted instead of dragged.
- Damp mop or auto-scrub with a neutralizing cleaner made for ice-melt residue. A regular neutral cleaner moves the film around without removing it.
- Spot-clean white residue lines along entrances, elevator thresholds and stairwell landings.
Weekly
- Machine scrub high-traffic lanes in lobbies and ground-floor corridors.
- Inspect the finish at entrances for scratches and dull lanes.
Monthly or as needed
- Burnish resilient floors (VCT, LVT with a finish) to restore gloss after scrubbing.
- Schedule a scrub and recoat in mid-winter for the busiest lobby areas, and plan a full strip and refinish in spring once the gravel season ends.
Stone and terrazzo need a pH-appropriate cleaner. Acidic products used to cut salt film can etch marble and some limestones, so confirm the product with the cleaning team before the season starts.
Carpets and elevator lobbies
Carpet next to entrances and elevators takes the grit that escaped the hard floor. Vacuum daily with a machine that has good filtration and a beater bar where the carpet allows. Treat salt stains early with a residue remover, since dried calcium chloride attracts moisture and re-wicks into the fibres. Plan hot water extraction for traffic lanes at least once mid-season and again in spring. Extraction, deep scrubbing and refinishing are often scoped as separate specialized cleaning work when the regular night crew is not equipped for them.
Plus 15 corridors and connected lobbies
Buildings tied into the Plus 15 network see a different winter pattern: fewer people come through the street doors in deep cold, and far more arrive at the skywalk level. That traffic is drier but heavier, and it carries grit from every building upstream.
- Treat Plus 15 entry points like a main entrance: matting, daily dust mopping and scrubbing.
- Add the skywalk-level elevator lobby and the closest restrooms to the day porter route.
- Clean glass on the corridor side weekly; condensation and handprints show quickly in cold weather.
- Agree in writing who cleans the connecting bridge itself, the building or the neighbouring owner, so the area does not fall between two contracts.
Restrooms, break rooms and touchpoints
Winter brings more people indoors for longer, and cold and flu season peaks in the same months.
Daily
- Clean and disinfect restrooms, with a midday check in busy buildings.
- Disinfect high-touch surfaces: door handles, elevator buttons, railings, kitchen taps, microwave and fridge handles, shared printers.
- Restock soap, towels and sanitizer stations; usage climbs in winter.
Weekly
- Clean break room appliances inside and out.
- Wipe vents, ledges and window sills where dry dust settles.
Exterior areas the cleaning crew may own
Snow clearing is usually a separate contract, but the line between snow removal and cleaning is worth writing down. Common gaps: sweeping gravel off the entrance landing in a dry spell, clearing slush from vestibule drains, emptying exterior ash urns and litter bins, and picking up debris that shows up when a chinook melts the snowbanks. Decide which vendor handles each item.
Safety and compliance points
Under Alberta's Occupiers' Liability Act, the party in control of the premises owes visitors reasonable care, which makes documented winter floor care worth keeping. Ask the cleaning company to log storm-day porter rounds and wet floor sign placement. Cleaning chemicals used on site, including ice-melt neutralizers and floor strippers, fall under WHMIS 2015 through Alberta's OHS rules, so the contractor should keep current safety data sheets available to its staff and label any product decanted into spray bottles.
Frequently asked questions
When should a Calgary office switch to a winter cleaning scope?
Most buildings change over when the first lasting snow and road gravel appear, typically in late October or November, and keep the winter scope until gravel sweeping wraps up in spring. Putting the seasonal tasks in the contract with set start and end dates avoids a scramble after the first storm.
How do you remove salt and calcium residue from office floors?
Use a neutralizing cleaner made for ice-melt residue, applied with a damp mop or auto-scrubber after the floor has been dust mopped or vacuumed. Removing the gravel first matters, because wet mopping over grit scratches the finish. Heavy buildup at entrances may need daily treatment through the coldest months.
Do chinooks change the cleaning schedule?
Yes. A chinook can turn dry, frozen entrances into wet, slushy ones in a few hours, so the plan should allow extra porter rounds and mat swaps on short notice rather than relying only on a fixed nightly visit. Many buildings add a flexible number of on-call porter hours to the contract for this reason.
Does a winter scope cost more?
Usually, because it adds labour (porter rounds, extra scrubbing, mid-season restorative work) and sometimes matting rental. For typical price ranges and what drives them, see our guide to office cleaning costs in Calgary.
Get a winter scope for your Calgary building
Simple Service is based in Greater Montréal. For Calgary properties, tell us about your facility and we'll connect you with a commercial cleaning team that serves Calgary. Start with our Calgary commercial cleaning page or send your building details.