Before You Start Reno Be Aware of Hidden Hazards

Reno 911: The Hidden Hazards 


As we begin to see the temperature consistently above zero, and climbing, many homeowners will dive into their next home renovation project. 


If you're one of the many undertaking a spring project, consider the following: Renovations can be a disruptive activity and it's important to be aware of what it is you're disrupting. Some projects create a mess of dirt and debris, while some create, or rather expose, more dangerous substances.




Prior to the mid-1980s, asbestos was commonly used in many household items like flooring, insulation, and around pipes. Asbestos minerals tend to separate into microscopic particles that become airborne and are easily inhaled. As long as it is undisturbed, neither the asbestos fibers nor the dust will be released into the air. However, when it is disturbed, it becomes dangerous. Exposure to asbestos can cause individuals to develop several types of life-threatening diseases, including lung cancer. Like any hazards, length and intensity of exposure are major factors in the risk of asbestos-related respiratory illness.


If the renovations that you're doing involve areas or items that may contain asbestos, it's important to have an asbestos inspection performed. An asbestos inspection includes: 

  • A complete visual inspection of the entire home for materials suspected to contain asbestos
  • A sampling of materials that are suspected to contain asbestos - according to O. Reg. 278/05
  • A report summarizing the results of the sampling and investigation

If there are materials that contain asbestos which are going to be damaged, disturbed or removed by the renovation, the safest approach is to have the materials removed by a qualified contractor.


Think this is a DIY project? Think again! Disposable respirators or dust masks are not appropriate or sufficient for asbestos
- Always hire a professional. Never do this work on your own




If you're performing renovations in your basement, bathroom, or any area of your home that sees a lot of moisture, you may encounter mould. Mould can easily hide behind tiles and drywall, and can be found anywhere in the home.  

You can't rely on the naked eye to identify moulds and their health risks. Home test kits can be unreliable: not only are you not an expert but the tools can often be faulty if not used correctly.


Since it's normal for mould to be present in the air and in buildings, its mere existence is not necessarily a cause for alarm. However, if indoor air levels of mould are higher than outdoor air levels, or if a significant mould colony is growing on building surfaces, it could be a cause for concern. For this reason, we advise homeowners to have a mould inspection performed if there is any indication that a substantial amount of mould is present in the home. A mould inspection includes: 

  • A complete visual inspection of the entire home from the basement to the attic for signs of water intrusion and mould growth
  • Moisture readings collected throughout the home
  • Two indoor air samples and one outdoor air sample (for reference)
  • A report, which summarizes the results of the sample and investigation 

An environmental specialist will help to identify the type of mould in your home, its concentration, and advise you on remediation costs and approaches. 

Sue Heddle 
Sales Representative
CENTURY 21 Miller Real Estate Ltd.
Brokerage Indendently Owned and Operated
467 Speers Road,
Oakville, ON L6K 3S4


Sue Heddle

Sue Heddle

Sales Representative
CENTURY 21 Miller Real Estate Ltd., Brokerage*
Contact Me