Red Leaf Proudly Canadian Owned and Operated since 1981
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This is a picture of a pipe with mould.

LEX offers a wide range of laboratory and consulting services to identify and manage hazardous building materials. Hazardous building materials are often identified during designated substance surveys conducted for real estate transactions to protect your investment, and before maintenance, renovations and demolitions to protect worker and occupant safety. Whether you are interested in sampling for specific materials or conducting a full hazardous materials and designated substance survey, our team of consultants can help you identify and quantify any potentially hazardous materials and provide formal documentation and detailed abatement specifications.


Let us help you ensure that any project requiring the disturbance of hazardous building materials is conducted in a safe manner in line with current regulations.




The LEX consulting team provides a wide variety of asbestos abatement services including:

  • Abatement contract administration
  • Preparation of asbestos abatement specifications
  • Abatement monitoring including air sampling and site inspections
  • Final Clearance Air Monitoring for Type 3 abatement including pre-contamination enclosure inspections, final visual inspections and aggressive air clearance monitoring
  • Asbestos awareness and removal training

The fully accredited LEX in-house laboratory (ISO/IEC 17025:2017; NVLAP Lab code 101949-0) provides our clients with an assurance of accurate and legally defensible results with extremely fast turnaround. On-site analysis is available.




Defined in Ontario Occupational Health & Safety Act Regulations O.Reg. 490/09, designated substances are a group of eleven chemical agents that are known to be hazardous and can cause significant negative health effects. As such, specific regulations regarding their handling and usage have been developed to minimize exposure and human health and safety concerns.  



Designated substances commonly found in building materials: 
  • Arsenic 
  • Asbestos
  • Lead 
  • Mercury 
  • Silica 
Other designated substances: 
  • Acrylonitrile 
  • Benzene 
  • Coke oven emissions 
  • Ethylene oxide 
  • Isocyanates 
  • Vinyl Chloride 


In addition to designated substances, we can help with the identification of: 
  • Mould
  • Bat/Pigeon Guano and Mouse Dropping Contamination 
  • PCBs 
  • UFFI (Urea Formaldehyde Foam Insulation)
  • Unknown Materials 
This is a room undergoing demolition


Don’t see what you are looking for?

LEX can offer other specialty services to suit project needs.

Please Contact Us for more details.