Our FAQ

Asbestos was commonly used in construction in Quebec until the late 1980s. If your property was built before 1990, it may contain asbestos in the insulation, floor tiles, or waterproofing materials.

The only way to confirm its presence is to have samples analyzed by an accredited laboratory. An asbestos test performed by Décontamination Grand Montréal is the first step before any renovation or demolition project.

Before renovating a house built before 1990, an asbestos test allows you to identify any materials that may pose a risk before touching them. This is an essential precaution to protect your family, as well as the contractors working in your home.

In some cases, such as when selling a property or applying for a major renovation permit, a test may also be required. Taking action in advance saves you complications and gives you real peace of mind before work begins.

The test pre-renovation or demolition is used to detect the presence of asbestos in the materials on your property before any intervention. It guides decisions on the job site and determines whether decontamination is necessary. It's a preventive measure and, in many cases, mandatory.

The test after work is completed analyzes the air quality once decontamination is finished. It confirms that asbestos fibres have been eliminated and that levels comply with standards. You receive an official report for your records.

Decontamination follows a strict protocol governed by Quebec regulations. Our team begins by hermetically sealing off the work area to prevent fibres from spreading to the rest of the property.

Once the containment is in place, we proceed with the removal of contaminated materials, their regulatory disposal, and the complete cleaning of the area.

The vermiculite used as insulation in attics in Quebec comes largely from the Libby mine in Montana, a source known for its asbestos contamination. If your insulation dates from before 1990, it's highly recommended that you have it analyzed before any contact.

We never advise handling suspicious insulation yourself. Our team can take samples, coordinate laboratory analysis, and proceed with safe removal if asbestos is confirmed.

Removing asbestos without the proper equipment is extremely dangerous. The fibres released into the air are invisible to the naked eye and can lodge in your lungs without you knowing it. Even brief exposure can have irreversible effects on your health.

In addition, Quebec regulations reserve this work for certified companies. Non-compliant decontamination can lead to significant legal liability and complicate the eventual resale of your property. Let DMG take care of it for you!

The duration depends on the contaminated area, the type of materials involved, and the accessibility of the area. A limited removal can be done in one day, while a larger project may take several days.

When you request a free quote, our team will assess the work and give you a clear timeline from the outset so you can plan accordingly and avoid unpleasant surprises.

Yes. We serve the entire island of Montreal, including Outremont, Westmount, Town of Mount Royal, and all boroughs, as well as the main cities on the South Shore. Every project receives the same level of attention to detail.

Not sure if your area is covered? Contact us directly. We'll get back to you quickly and with no obligation.