After a leak, water damage or the discovery of mold or asbestos: a contained area, negative pressure, decontamination and rebuilding of the affected parts, under a written quote.
or call (514) 654-9184
Decontamination & water damage
Asbestos and lead testing, mold decontamination, air quality testing and rebuilding of finishes: we restore the premises safely, including in occupied buildings.
After water infiltration, or before demolishing in an older building, you need to know what the materials contain and what condition they are in. Mold, asbestos and lead are not handled like ordinary debris: they require precautions to protect workers and occupants.
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Construction AIM manages this work from testing to finishes, under CNESST rules. Decontamination only lasts if the water source is fixed: we can combine it with roof replacement or foundation waterproofing.
In Quebec, CNESST regulations presume that asbestos is present in sprayed-on materials in buildings constructed before February 15, 1990 and in heat insulation in those constructed before May 20, 1999. Locating, sampling and analyses by an accredited lab; removal by change order if its presence is confirmed.
Following the ANSI/IICRC S520 standard and CNESST rules: a contained area, negative pressure so spores do not migrate, removal of affected materials and surface cleaning with HEPA vacuuming.
Before closing up ceilings and walls, a round of air quality and mold tests confirms that the decontamination achieved its goal and that the areas can be rebuilt.
Once the areas are decontaminated and cleared: new drywall, taping, primer, paint and blending with existing surfaces. The work stays limited to the opened areas.
Offices, apartment buildings, retail stores: dust partitions, protected entrances, a communication plan for noisy or dusty phases and coordination with the property manager.
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Three situations that call for testing or decontamination before any other work.
Before any stripping, asbestos and lead must be tested for. The year of construction gives a clue; only a lab analysis confirms it.
A recent or repeated leak leaves wet materials behind the finishes. They have to be opened, decontaminated and the water source fixed.
Odours, symptoms reported by occupants or visible mold in common areas: work under containment, with a communication plan and close coordination with the property manager.
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From locating to acceptance, every step is documented.
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Treat the cause, protect people, document every step.
Asbestos or lead removal, if required, is covered by a change order approved in writing and follows the safe management procedure required in Quebec.
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Decontamination and water damage restoration terms, explained before the work begins.
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We restore dwellings, offices and buildings in Montreal, on the North Shore, including Laval, and on the South Shore.
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The year of construction gives a first clue. The CNESST requires buildings constructed before February 15, 1990 to be inspected to locate sprayed-on materials, and those constructed before May 20, 1999 to locate heat insulation (lagging). Other materials likely to contain it, such as plaster, stucco, vinyl tiles, shingles or vermiculite, are presumed to contain it until a lab analysis shows otherwise.
We present you with a change order for the removal, following the safe management procedure required in Quebec. Work in the affected area resumes once the removal is complete.
Containment isolates the work area. Negative pressure draws air into that area and filters it, which keeps dust and spores from spreading to the rest of the building.
Often, yes. Depending on the scope of the work, we partition the areas, protect the entrances and plan the phases with the property manager and the occupants.
Yes. For asbestos removal or demolition work on a construction site, the employer must send the CNESST a notice of opening of a construction site that specifies the methods used and provides proof of the workers' training program. A register for the safe management of asbestos must also be kept and given to the people who plan or carry out the work. Source: CNESST.
Our prices are based on the current wage rates of the Commission de la construction du Québec (CCQ), set by the collective agreements for the sector concerned (residential, institutional and commercial, industrial), plus the materials and equipment specific to each job. Every quote is free, detailed and prepared after a site visit.
Shut off the water source and the electricity in the affected area if it is safe, take photos and notify your insurer. Then have it dried quickly: mold can start growing on wet materials within 24 to 48 hours. Before demolishing, have older materials checked for asbestos.
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Our guides on restoration.
Decontamination under the IICRC S520 standard.
Read the guide →Sheet 02 · GuideDust, noise and air quality during the job.
Read the guide →Sheet 03 · GuideThe backwater valve and its maintenance.
Read the guide →Next step
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Describe my projectPage updated October 17, 2026.
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