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Secret Hotspots for Mold Infestations in Scarborough Homes

Published on March 06, 2026

Hidden mold growth is a problem across Scarborough’s aging homes and can be caused by many different factors, such as leaks, climate, and older housing stock. Mold removal in Scarborough is a safe and effective service that helps identify these causes and remove harmful infestations that cause illness and damage. MoldTech helps families identify problems through mold testing in Scarborough and offers safe, efficient, and permanent remediation solutions. In this article, we’ll share more about where we find recurring hotspots and why they start — and if anything sounds familiar, give our team a call to learn more about the next steps. 

Why Mold is Common in Scarborough Homes

mold removal scarboroughThere are many factors that cause homes in Scarborough to suffer from more mold issues than neighbouring boroughs. In fact, Scarborough’s many unique neighbourhoods often result in neighbourhood-specific causes or issues — what affects Malvern may be very different than Birch Cliff! 

This wide range of mold problems is caused by several key factors:

Lake-Effect Moisture

Scarborough is a sprawling part of Toronto with a lot of lakefrontage, ravines, and waterways. This can result in homes experiencing a lake-effect, which is when warm or cool air meets the lake. The difference in temperature between the two can result in increased snow, moisture, fog, and humidity. 

Older Homes

Scarborough’s biggest building boom began in the 1960s, and many of these homes are now showing their age in more ways than one. Windows, doors, roofs, and even exterior walls will become less resistant to moisture over the decades, and once moisture gets in, mold will thrive. We also find that these older homes often have poor ventilation, and this lack of airflow causes moisture to become trapped.

Basement-Heavy Construction

Sub-grade basements age in the same way that the visible parts of a house do, and may sometimes experience greater stress from freeze-thaw cycles and groundwater. One of the most common spaces we’re asked to test for mold in Scarborough is the basement; cracking foundations, old piping, and floods or water seepage tend to be the most common causes. 

Recent Removations

What if you’ve recently modernized your home with renovations? Unfortunately, this doesn’t always mean you’ve prevented mold growth. Many contractors don’t consider ventilation or air movement when renovating older homes that were built to different standards. These changes can trap moisture where it used to evaporate, and actually cause mold growth. If you’re planning renovations, the MoldTech team can consult and make recommendations that help prevent mold issues. 

How To Eliminate Mold Hotspots in Scarborough

Mold will often grow out of sight behind walls, flooring, or in the darkest spot in the basement, making it hard to identify or spot. At MoldTech, we generally recommend that you have mold testing in Scarborough if you identify signs or symptoms like: 

  • A musty odour. 
  • Changes to the colour of walls or flooring, or peeling paint. 
  • Unexplained headaches. 
  • Recent water leaks or flooding. 
  • Coughing, sneezing, or other allergy-like symptoms. 

As a specialist service, MoldTech’s focus and training are exclusively in mold remediation and inspection, leading to greater expertise and knowledge than the average handyman. We’ll help assess your home for hidden mold and, if necessary, effect a safe and permanent remediation, too. When it comes to mold removal in Scarborough, waiting can result in a bigger infestation and higher remediation costs. If you have questions about what you’ve read or would like to know more about mold growth in Scarborough, call or email our team to learn more today.  

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