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Mold Removal

Let’s talk problematics related to mold contamination. When meeting with owners struggling with issues related to mold contamination we find that they are often related to certain common disorders & can be categorized into two distinct groups, which are infiltration & condensation. Here are some examples:


  • Infiltration problems (surrounding the chimney or openings of the roof), a roof that has to be replaced.
  • Condensation problems (lack of insulation, lack of ventilation, lack or breach in the vapor barrier, lack of air extraction ex.: dryer exhaust, bathroom fan, stove hut).

Main floor:

  • Infiltration problems (on doors and window openings, bad waterproofing of the buildings envelope, balconies & terraces badly fixed to the building …)
  • Condensation problems (lack of insulation, lack of air extraction ex.: bathroom fans, stove hut, air exchanger, lack of humidity control …)


  • Infiltration problems (cracked foundation walls, non-functional or absence of french drain, lack of vapor barrier under the slab, at the doors and window openings …)
  • Condensation problems (inadequate insulation, lack of vapor barrier at the joists, lack of humidity control, lack of heating …)

Crawl space:

When in presence of a crawl space, we have a winning recipe for mold,(presence of bare soil, organic matter in contact with the ground, absence of vapor barrier on the ground, lack of humidity control, possible presence of Serpula Lacrymans or other mushrooms …)

Of course combined with all the elements mentioned above, there is always the risk of internal breakage or damage (hot water tank breakage, leaking or broken plumbing, leakage of air conditioning systems …)

You will quickly understand that the issues listed above will lead the property to mold disorders. Mold, these plant organisms that allow the degradation of organic matter, is part of a natural process. This process, when concentrated, affects the health of the occupants.

problème de moisissures
moisissures sous-sol
moisissures vide sanitaire

Problems related to humidity in basements

All mold problems come from a lack of humidity control. The humidity level of a home should be a priority for every homeowner. In absence of humidity, there will also be absence of mold proliferation. In regards of the humidity of the basement, it is imperative that it be maintained at acceptable levels in order to avoid any risk of condensation. This phenomenon occurs when a cold surface comes in contact with a hot surface.

Mold contamination in basements are, for example, found in the surrounding walls. These walls and foundations are exposed to the extreme colds of winter, therefore, poor insulation will provoke condensation and will eventually lead to mold proliferation.

It is important to understand that when you are dealing with a high concentration of mold, a simple cleaning, use of an anti-mold paint, or the application of a miracle product, will not solve the situation.

test de moisissures
moisissures dans les murs 1

What are some notable mold signs?

In order to determine if you are dealing with a mold problem, you may have an air quality test done by a professional in this matter. But as a home owner, you may also notice several signs:

  • White mold, on objects, plants, concrete, wood …
  • Black mold, on concrete, wood, Drywall …
  • Smell of mold (make no mistake, many will say it smells like humidity…but water has no odour so if it smells…)
  • Smell of soil (this smell is often related to certain types of mold or fungus).
  • Presence of saltpetre or efflorescence (these are minerals not mold, but in the presence of these we are often in the presence of hydrostatic pressure of water on the concrete). Presence of macroscopic mushrooms (visible mushrooms)
  • Etc.

These are signs of excess humidity and possible mold growth.

How to remove mold properly?

The decontamination of mold consists of evacuating and extracting all the spores present in the residence in order to make the mold profile satisfactory. To do this, several steps and procedures are of absolute necessity to succeed.

Here are some examples:

  • Set up of protected decontamination zones
  • Installation of HEPA air extraction units (to maintain the negative pressure of the zone)
  • Use personal protections for each technician (Tyvek, masks and HEPA filter …)
  • Waste management by double bagging technique.
  • Vacuum cleaning with HEPA filter.
  • Assure corrective measures are taken to ensure a healthy environment in the long run.

In addition, only one method of verification exists to ensure that the decontamination work has been carried out effectively, and that is the air quality test. Mold spores are so small that they are invisible to the naked eye, and in the absence of air movement, a spore can take more than 30 minutes to travel 30 cm or 12 inches down. Their numbers on a mildew spot are so high that on a coin-sized surface 300,000 spores can be found.

The basic principle of decontamination, as mentioned above, is the eradication and not the killing of spores, since a dead or living spore will certainly cause health problems to the occupants.

Occupants at risk:

  • Elderly
  • Young children
  • People with weak immune systems are more likely to react to mold
  • Etc.
moissures fenetre 1

Our work :

Fongix guarantees complete decontamination of your property…

With the right know-how and specialized equipment, Fongix Decontamination is able to give a new life to your building, and thus, add value to the property.

Contact us at 1-844-511-5454 for a free quotation by our experts.

Montreal: 2001 Boul. Robert Bourassa, suite 1820  Montreal QC. H3A-2A6

Joliette: 125 Saint Pierre N street, Joliette, QC J6E 5Y1