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Why Bleach Doesn't Work to Remove Mold After Water Damage

Mold Removal
February 06, 2026

Many DIY-ers recommend at-home treatments to restore local properties – commercial or residential — after incidents like mold infestations and water damage in Montreal. While many of these can make it appear as though all is well and that there is no mold left on-site, mold is usually left beneath the surface, where it is undetectable to the average person. One of the most common do-it-yourself solutions for mold removal in Montreal is bleach. But despite your best effort, the bleach won’t actually kill mold, especially following a massive leak or flooded basement water removal. Bleach doesn’t kill mold. For practical, reliable, and meaningful restoration, you need professional mold removal services. At Canada’s Restoration Services, our team has more than a decade of experience. As an IICRC-certified restoration company in Quebec and across Canada, we know how to get mold out of your property.

Here is why bleach won’t work to effectively remove mold from your property after water damage in Montreal.

Bleach Whitens, But Doesn't Kill

mold removal montrealMost building materials affected by moisture and water damage in Montreal are porous. Drywall, wood framing, insulation, and subflooring absorb water and allow mold roots to grow deep within the material. Bleach may whiten the surface, giving the impression that the mold is gone, but it does not reach the mold growth beneath and simply won’t kill the infestation. In the wake of a significant incident that requires professional flooded basement water removal, moisture often travels far beyond visible areas, which means surface cleaning alone is not enough.

Bleach Adds Moisture

Bleach is mostly water. When applied to porous materials, it can actually introduce more moisture into the environment. Mold thrives in damp conditions, so adding moisture can worsen the problem instead of solving it. This is especially common after flooded basement water removal, when materials are already saturated and vulnerable to regrowth.

Bleach Does Not Address the Source of Moisture

Mold is a symptom of a moisture problem, not the problem itself. Even if bleach temporarily removes surface staining, but it does nothing to fix leaks, humidity issues, or trapped moisture left behind after water damage in Montreal. Without addressing the root cause, mold will continue to return. Professional mold removal in Montreal includes moisture detection, drying, and containment to prevent recurrence. At Canada’s Restoration Services, our IICRC-certified restoration experts will help you effectively address moisture with industrial dryers, dehumidifiers, and other tools.

Health and Safety Risks

Using bleach indoors can release strong fumes that irritate the eyes, lungs, and skin. Mixing bleach with other household cleaners can create dangerous gases. After water damage in Montreal, the air quality is often already compromised. Improper chemical use can make the environment more hazardous, especially for children, pets, and individuals with respiratory conditions.

Get Mold Removal in Montreal Done Right with Canada’s Restoration Services

If your property has experienced water damage in Montreal, relying on bleach can leave hidden mold behind and increase long-term risk. Professional remediation protects your health, your property, and your investment. Contact Canada’s Restoration Services for trusted mold removal in Montreal and complete restoration support from start to finish.

At Canada’s Restoration Services, we conduct thorough inspections, isolate affected areas, and remove contaminated materials when necessary. Our process ensures that mold removal in Montreal is complete and that moisture conditions are corrected. After flooded basement water removal, our team also focuses on drying and dehumidification to prevent future growth.

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