Greystone Industrial Services Inc.

Your multi-trade contractor of choice!


Greystone Industrial Services is a fully licensed and certified industrial general contractor. We offer our customers a range of in-house services, such as plumbing, pipe fitting, pipe welding, CWB-qualified welders, a millwright, and electrical.

As a general contractor, we also work with a long list of trusted subcontractors that can meet any of your needs. Need help finding what you are looking for? Contact us today to see how we can serve you!


Serving the Greater Toronto Area


Greystone Industrial Services specializes in fabricating, installing, and maintaining mechanical systems, serving a wide range of industries while ensuring minimal downtime.

  • TSSA Certified Contractor, Heating Fuels Contractor (Natural Gas), Process Piping B31.3, Power Piping ASME B31.3
  • Hydronic, Power & Process Piping
  • Steam & Condensate
  • Boiler Installations
  • Storm & Sanitary Drainage Plumbing
  • Domestic Water Services
  • Backflow Prevention, Installation & Testing
  • Chiller Piping / Instllations
  • Compressed Air (Pneumatics) & Compressor Installations
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Our HVAC services include expert installation and maintenance of heating and air conditioning systems to ensure optimal indoor comfort. We specialize in efficient exhaust systems and ducting solutions to maintain excellent air quality. Additionally, we offer advanced split systems and heat pump installations to enhance energy efficiency and reduce utility costs.

  • Heating & Air Conditioning
  • Exhaust Systems & Ducting
  • Split Systems
  • Heat Pump Installations
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Greystone Industrial Services is a Licensed Electrical Contractor, insured and registered with the Electrical Safety Authority. It provides comprehensive electrical solutions for various sectors.

  • Power Distribution
  • Process Wiring
  • Automation, Conveyors & Robotics
  • PLC Wiring
  • Motion Control Centers
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Greystone Industrial Services Inc. is a full-service contractor offering millwrighting and custom fabrication. We have earned a reputation as an industry leader. We combine leading-edge technology and deliver high-quality work.

  • CWB Certified to CSA Standard W47.1
  • Machinery Fabrication, Installations & Guarding
  • Miscellaneous Steel Fabrication Utilizing, Mild Steel, Stainless Steel & Aluminum
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Over the last 15 years, Greystone has been involved in a wide array of Food, Pharmaceutical, and other Industrial projects, with numerous satisfied customers. As a growing company, we strive to provide our customers with efficient and cost-effective solutions to any of their facility needs. Our team of qualified personnel is here to get the job done correctly while following all the customers' safety, GMP, and on-site rules.