Mold at home: A serious concern

Did you know that summer encourages mold growth in homes, especially in basements?  When windows are closed, air quality deteriorates, and its negative effects become more noticeable. 

The most vulnerable individuals are children, seniors, and those with respiratory issues or weakened immune systems.

What is mold?

Mold consists of microscopic fungi that grow on damp or dusty surfaces. 

When visible, it appears as black, white, or coloured spots on materials such as wood, drywall, or fabrics, often accompanied by a distinctive odour linked to excess humidity. 

Depending on its type and extent, mold can pose health risks.

Why does it form?

Mold needs water to remain on a surface for an extended period to develop. Common causes include water infiltration from outside, leaks indoors, condensation, or capillary action which is a phenomenon by which water moves through porous materials (such as concrete, wood, or drywall) due to surface tension. In other words, water “climbs” or spreads into the tiny gaps or fibers of the material, even without gravity or external pressure.

How should you respond?

Although microbial analysis is the only way to confirm toxicity, any visible signs or unusual odours should be taken seriously. 

For small areas, clean thoroughly with soapy water and ensure proper ventilation to prevent recurrence. 

If contamination appears significant or uncertain, it is recommended to consult an expert to assess the situation, identify the causes, and carry out corrective and decontamination measures.

Source: Legault Dubois