Where to Look for Mold

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Mold can grow virtually anywhere—in any room of any house, in any commercial building and in any storage room.

That said, some areas are more prone to mold problems than others. Knowing where to look for mold can help you detect, eliminate and prevent the problem.

In the following section, we’ll let you know which parts of your house are most vulnerable to mold infestations.

Common spots for mold

If you’re concerned about mold in your home, pay special attention to these high-moisture areas as they are hot spots for mold growth.

 Common hotspots for mold growth


  • Basements: Flooding, leaks, condensation, poor ventilation…
  • Kitchens: Cooking, washing, inefficient exhaust fans…
  • Bathrooms: Showering, steam, leaks, inefficient exhaust fans…
  • Attics: Poor ventilation, insufficient air circulation, roof damage…
  • Crawlspaces: Leaks, moisture intrusion, poor ventilation…
  • Laundry rooms: Washing, inefficient exhaust fans…

Despite your best efforts, mold problems aren’t always visible–sometimes they spread behind walls and ceilings or underneath floorboards. This is often the case when there’s a crack in your home’s foundation, a leaky pipe or some other type of water intrusion.

That’s why you should also keep an eye out for mold on drywall, carpets, curtains, wallpaper, wood, furniture, food, plants and soil.

You should also consider hiring a professional mold inspector who will be able to use an infrared camera to detect mold in inaccessible places without tearing up walls or floors.

Common Signs of a Mold Problem
Common Signs of a Mold Problem

Why mold forms

While it’s great to know where mold most often grows, it’s better to understand why in order to prevent it. Let’s dive deeper and explore the reasons why the basement, for instance, is a problem area.

There are four main reasons why mold so often grows in the basement:

  1. Basements are prone to flooding.
  2. Basements are not as well ventilated as the upper floors of a house and are, therefore, more humid.
  3. Basement walls are cooler, allowing warm air to condense on them in the summer.
  4. Basement floors rarely have a moisture barrier or proper insulation. With neither a moisture barrier nor proper insulation installed, the moisture from the underlying soil migrates upward.

If you suspect mold growth, call Mold Busters now and ask about our quick, convenient and affordable mold inspection services in Ottawa and Montreal.

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