Cromwell Design Build

Post-construction cleaning in the GTA and Southern Ontario

The contractor that built the building hands it over clean and ready to use. The clean is booked into the construction schedule, so handover is not held up waiting for a separate cleaning company.

A technician on a scissor lift cleaning the glass entrance of a commercial building while a drone sprays the upper windows, with a service van parked in front
Lift and drone cleaning of a finished curtain wall

Post-construction cleaning, in three stages

Post-construction cleaning takes a building from a finished construction site to a space that is ready to use. It is done in three passes at the end of the build.

  1. Rough clean

    Debris, packaging and heavy dust are removed while the trades finish, so the finishes go onto clean surfaces.

  2. Final clean

    Top to bottom before handover: dust off every surface, ledge and fixture; inside cabinets, drawers and closets; windows, frames and tracks inside and out; stickers, labels, paint spots and adhesive removed; floors cleaned to suit each finish, whether hardwood, tile, stone, polished concrete or carpet.

  3. Touch-up clean

    A last pass right before the walkthrough or move-in.

Also available: exterior and window cleaning, including the facade, and in commercial and industrial buildings, high dusting of beams, ductwork, pipes, ledges and light fixtures.

Data centre cleaning before go-live

Construction leaves dust and particles where they matter most in a data centre: under the raised floor, in the cable trays, on the overhead structure and on the walls. We clean the white space before the equipment goes in and again before it goes live.

The work is done with ESD-safe, grounded tools, in a set sequence from the top down, so areas already cleaned stay clean. We work to the operator’s cleanliness specification and the commissioning schedule.

  • Subfloor (plenum) cleaning
  • Raised floor tiles, top and underside
  • Cable trays and overhead surfaces
  • Walls, doors and ledges
  • A final wipe-down before the equipment is installed
  • Scheduled cleaning after go-live
A technician in a grey coverall vacuuming the subfloor of a data centre under lifted raised-floor tiles, between rows of server racks
Subfloor cleaning in a data centre white space

Drone cleaning of glass, cladding and roofs

A cleaning drone washes high glass, cladding and roofs from the air, without a lift, a swing stage or rope access.

What it cleans
Curtain walls, windows, cladding, skylights and roofs, including surfaces a lift cannot reach.
How it works
The drone sprays water or a cleaning solution onto the surface, usually fed by a tether hose from a pump on the ground.
Why use it
There is no swing stage, scaffold or rope access to rig, and no one works at height.
The rules
In Canada, a drone of 250 grams or more must be registered with Transport Canada and flown by a pilot with a drone pilot certificate. Flying near people or in controlled airspace calls for the advanced certificate.
On the day
The ground below is closed off, and the flight is planned around the weather, the airspace and the people using the building.

Cleaning and maintenance after handover

After handover, we can keep the building clean and maintained on a schedule. We already know the building, its systems and its shut-offs, which saves time on routine visits and when something goes wrong.

  • Janitorial service for offices, retail, industrial and multi-unit buildings
  • Window and exterior cleaning, by lift or by drone
  • High dusting of beams, ductwork, pipes, ledges and light fixtures
  • Data centre maintenance cleaning
  • Preventive maintenance: roofs and drains, doors and hardware, lighting and the building envelope
  • Repairs and small renovations between tenants
  • Emergency clean-up after a fire or flood: water extraction and drying, board-up and making the building safe

How service starts

  1. Walk-through

    We walk the building with the owner or property manager and note its systems, access points, shut-offs and problem areas.

  2. Scope and schedule

    Cleaning frequencies, the maintenance checklist and the contacts for an emergency are set out in writing.

  3. Service begins

    Work follows the checklist, and each visit is reported to the owner or property manager.

  4. Emergency calls

    One number for a flood, a fire or a break-in. The first job is to make the building safe and stop the damage.

Post-construction cleaning questions

What is post-construction cleaning?

It is the cleaning that turns a finished construction site into a building that is ready to use. Debris, packaging, dust, stickers, labels, paint spots and adhesive are removed in three stages: a rough clean, a final clean and a touch-up clean.

What is the difference between a rough clean, a final clean and a touch-up clean?

They happen at different points at the end of the build. The rough clean removes debris, packaging and heavy dust while the trades finish, so the finishes go onto clean surfaces. The final clean goes top to bottom before handover. The touch-up clean is a last pass right before the walkthrough or move-in.

Why book the cleaning with the builder instead of a separate cleaning company?

Because the clean is booked into the build schedule, so handover is not held up waiting for another company. The contractor that built the building already knows it and hands it over clean and ready to use.

Do you clean data centres before they go live?

Yes. We clean the white space before the equipment goes in and again before it goes live: under the raised floor, in the cable trays, on the overhead structure and on the walls, to the operator’s cleanliness specification and the commissioning schedule.

What equipment do you use in data centres?

ESD-safe, grounded tools. The work follows a set sequence from the top down, so areas that have been cleaned stay clean.

When is a drone used instead of a lift?

When the glass, cladding or roof is out of reach of a lift, or would otherwise need a swing stage, a scaffold or rope access. The drone needs a clear area below it and suitable weather, and it is flown under Transport Canada’s drone rules.

Can you keep cleaning the building after handover?

Yes. We can keep the building clean on a schedule: janitorial service, window and exterior cleaning, high dusting and data centre maintenance cleaning, plus emergency clean-up after a fire or flood.

What areas do you serve?

The Greater Toronto Area and Southern Ontario.

How do I book an after-build clean?

Send the project type, location, approximate size and target handover date through the contact form, or call (416) 659-8155. The clean is then booked into the build schedule.

Book your after-build clean

Send the project type, location, approximate size and target handover date. For an emergency, call (416) 659-8155.