Frequently Asked Questions
All your questions, clear answers
Find here the answers to the questions we receive most often.
What types of buildings can Saphir handle?
Saphir works in all types of buildings:
Residential — single-family homes, condos, semi-detached houses, plexes
Commercial — offices, shops, restaurants, hotels
Institutional — schools, daycares, hospitals, long-term care facilities, libraries
Industrial — factories, warehouses, manufacturing workshops
Condominiums and condominium associations
Government and municipal organizations
Whether you are a tenant, owner, property manager or representative of an institution, Saphir adapts its service to your reality.
In which regions of Quebec does Saphir operate?
Our five mobile teams cover two major regions:
Greater Montreal: Montreal, Laval, Longueuil, the North Shore (Blainville, Sainte-Thérèse, Boisbriand, Rosemère, Mascouche, Terrebonne, Saint-Jérôme, Mirabel) and the South Shore (Brossard, Boucherville, Châteauguay, La Prairie)
The Capitale-Nationale and Chaudière-Appalaches regions: Quebec City, Lévis and surrounding municipalities within a 50 km radius
Don't see your city listed? Contact us — we evaluate each request individually.
Is Saphir certified and recognized by the Quebec authorities?
Yes. Our technicians are trained by ASP Construction (a joint sector association for the construction industry) and hold IICRC FSRT (Fire and Smoke Restoration Technician) and WRT (Water Damage Restoration Technician) certifications. Our projects involving hazardous materials (asbestos, silica) are registered with the CNESST in accordance with the law.
Laboratory analyses are carried out by independent laboratories accredited to ISO 17025 and recognized by the MELCCFP (Ministry of the Environment, the Fight Against Climate Change, Wildlife and Parks) and the IRSST (Robert-Sauvé Research Institute in Occupational Health and Safety).
How can I tell if I have a mold problem in my house?
The most common signs of fungal contamination are:
Black, greenish or whitish stains on walls, ceilings or floors
Persistent musty odor, especially in the basement, closets, or attic.
Recurring allergy symptoms in occupants (cough, stuffy nose, irritated eyes)
Signs of dampness, condensation or water infiltration
Paint blistering, wallpaper peeling, or plaster swelling
If you suspect the presence of mold but see nothing visible, an air analysis may reveal hidden contamination in the walls, insulation, or crawl space.
Can I clean mold myself with bleach?
Bleach can discolor visible surface mold, but it doesn't penetrate porous materials like drywall or wood, and therefore doesn't treat the underlying contamination. Furthermore, without proper containment, simply cleaning disperses the spores into the air and other rooms, worsening the infestation.
For small areas of less than 1 square meter, DIY cleaning may suffice on non-porous surfaces (tiles, metal). For larger areas, or if the contamination affects gypsum, wood, insulation, or the attic, professional decontamination is strongly recommended to protect the health of the occupants and preserve the building's structure.
Should we leave the house during mold decontamination work?
It depends on the scope of the work. For limited and well-contained interventions, occupants can remain in the unaffected parts of the building. For larger projects—basements, attics, or several areas simultaneously—it is strongly advised to vacate the premises for the duration of the work to avoid exposure to spores and decontamination products.
Our technicians assess the situation during the inspection and advise you on the necessary precautions. Airtight enclosures and a negative pressure system minimize the spread of contaminants to inhabited areas.
What is the difference between the contamination levels (I, II, III)?
Industry protocols (BNQ, IICRC) distinguish three levels of contamination based on the affected area:
Level I — small area (less than 1 m²): localized cleaning without complete containment, lightweight equipment
Level II — medium surface area (1 to 10 m²): containment of the area, negative pressure, removal of affected materials
Level III — large area (over 10 m²): complete protocol, airtight containment, decontamination chamber, negative pressure, mandatory air test, site registration if required
Saphir defines the applicable level during the inspection and adjusts the protocol and equipment accordingly.
Can mold return after decontamination?
Decontamination eliminates existing contamination, but if the source of moisture that caused mold growth isn't addressed, the mold can indeed reappear. That's why Saphir systematically identifies the source during the inspection—water infiltration, plumbing leaks, inadequate ventilation, missing vapor barrier—and advises you on the necessary repairs before or after the work is completed.
A follow-up with a hygrometry reading after the work confirms that the humidity level has returned to normal levels (ideally between 30% and 50% relative humidity).
Does my building contain asbestos? How can I find out?
If your building was constructed or renovated before 1999, it may contain asbestos-containing materials (ACM). Asbestos was used in a wide variety of building products:
Vermiculite insulation (attics, basements)
Vinyl floor tiles and their adhesive
Acoustic ceiling tiles
Exterior asbestos-cement cladding (shingles)
Caulking around windows and doors
Insulation of heating pipes (magnesite)
Textured paint (textured ceiling paint)
The only way to confirm the presence of asbestos is to have a sample of the material analyzed by an accredited laboratory. Saphir collects the sample and sends it to the laboratory as part of the initial inspection.
Is asbestos dangerous if I don't renovate?
Asbestos-containing material (ACM) in good condition and undisturbed presents a limited risk to occupants. Asbestos fibers are only dangerous when released into the air and inhaled. The risk becomes critical during renovation, demolition, drilling, or sanding work.
If you are planning work in a building constructed before 1999, a preliminary inspection is mandatory in Quebec under the Construction Safety Code. The rule is simple: never drill, cut, sand, or move any suspect material without knowing whether it contains asbestos.
What is vermiculite and is it different from asbestos?
Vermiculite is a naturally occurring expanded mineral used as thermal insulation in millions of homes between the 1920s and 1990s. Vermiculite itself is not asbestos, but the vast majority of vermiculite sold in Canada came from the Libby mine in Montana, which was naturally contaminated with tremolite, an extremely dangerous asbestos fiber.
Health Canada considers any vermiculite of unknown origin to be potentially contaminated with asbestos. If you have vermiculite in your attic or walls, do not disturb it and contact Saphir for an assessment.
Does asbestos removal necessarily have to be carried out by a specialist company?
Yes. In Quebec, the removal of asbestos-containing materials (ACM) is governed by Regulation S-2.1, r.13 on occupational health and safety and by the Construction Safety Code. Asbestos removal sites must be registered with the CNESST. Workers must have received ASP Construction asbestos-specific training and wear appropriate personal protective equipment.
Asbestos waste must be transported and disposed of at an authorized landfill site, with a signed transport manifest. Saphir handles all of these legal obligations for you.
What is crystalline silica and where is it found?
Crystalline silica (quartz) is a mineral that occurs naturally in many common building materials: concrete, brick, mortar, tiles, ceramics, slate, granite, marble, asphalt, and sand. In its solid, undisturbed state, it is harmless. The danger arises during work that generates fine dust: sawing, grinding, sanding, cutting, demolition, and crushing.
Respirable crystalline silica (RCS) particles are extremely fine (less than 4 microns) and can remain suspended in the air for several hours. Once inhaled, they accumulate in the lungs and cause irreversible damage.
What are the new legal obligations concerning silica since 2023?
Since June 8, 2023, Article 3.25 of the Construction Safety Code imposes mandatory measures for any work generating crystalline silica dust on construction sites. These obligations include:
The use of tools equipped with dust collection systems at the source
The installation of a suction ventilation system with HEPA filtration
Humidifying the dust at the source if capture is not possible
Wearing level 100 respiratory protective equipment (RPE)
The work area was sealed off to protect other workers and occupants.
Failure to comply with these obligations exposes the employer and the contractor to fines from the CNESST.
Do all concrete works require silica decontamination?
No. Work that does not generate dust—such as painting on concrete, cleaning with water, or applying a coating without cutting—is not covered. The requirement applies to work that disturbs or cuts the material: demolition with a hammer, sawing concrete, grinding tiles, sanding mortar, core drilling, or milling.
If you have any doubt about your situation, call Saphir — we will assess free of charge whether your site is affected and which protocol applies.
Can Saphir carry out a demolition even if there are no contaminants?
Yes. Saphir performs partial and complete demolitions, with or without contaminants present. Our teams are equipped for demolishing walls, partitions, floors, and ceilings, as well as for the complete demolition of residential and commercial buildings. We also manage debris and demolition materials in accordance with municipal and provincial regulations.
What happens if asbestos or mold is discovered during a demolition?
When a contaminant is discovered during demolition, work must be stopped immediately in the affected area. Saphir then intervenes to contain the area, assess the extent of the contamination, and implement the appropriate decontamination protocol before resuming demolition.
Because Saphir combines decontamination and demolition within a single team, the transition is quick and without wasted time or coordination between multiple contractors. You only have one point of contact.
Does Saphir work with insurers regarding claims?
Yes. Our technicians are IICRC FSRT (Fire and Smoke Restoration Technician) and WRT (Water Damage Restoration Technician) certified, which allows us to work directly with insurers on claims. We produce the required documented reports (photographic record, damage description, intervention protocol) to facilitate claims processing.
If you are the victim of a fire, water damage, or flooding, contact Saphir quickly — a rapid response limits the extent of the damage and the restoration costs.
Does home insurance cover decontamination work?
It depends on your insurance policy and the cause of the contamination. In general:
Sudden and accidental water damage (burst pipes, sewer backup if covered) is often compensated, including subsequent decontamination work.
Chronic humidity problems resulting from a lack of maintenance are generally ruled out.
The presence of asbestos in a building constructed before 1999 is generally not covered if it is known at the time of purchase.
Saphir can produce the reports and documentation necessary to support your claim with your insurer. We recommend contacting your insurer before the work begins to confirm your coverage.
What is the timeframe between the request for submission and the start of work?
After receiving your request, we typically contact you within 24 hours to schedule the inspection. A written quote will be provided within 24 hours of the visit. The work schedule is then established based on our team's availability and the urgency of the situation. For urgent cases, we do everything possible to respond quickly.
What is a decontamination certificate and what is its purpose?
The decontamination certificate is an official document issued by Saphir at the end of each project. It certifies that the work has been carried out in accordance with applicable standards and protocols, that the final inspection has been performed and, where applicable, that laboratory analyses confirm the conformity of the air and materials.
This document is useful in several situations:
To reassure future buyers or tenants of a building
As evidence for your insurer in the event of a claim
For real estate transactions where contamination has been reported
For condominium managers or syndicates who must report to the co-owners

