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613-938-2521



814 Second St W
Cornwall, ON K6J 1H6

St. Lawrence Testing & Inspection Co. Ltd.: Service since 1975

Building & Civil Engineering Construction Expertise

St. Lawrence Testing & Inspection Co. Ltd., established in 1975, offers complete in-house testing and inspection services for building and civil engineering construction projects. All staff members are senior, long time employees who have earned an excellent reputation as a result of their dedication and competence. For internal quality control, the firm participates in Ontario MTO concrete, grout and soil correlation programs. St. Lawrence Testing is certified by the Canadian Council of Independent Laboratories (CCIL) in concrete, asphalt and aggregate testing and is qualified by the Ontario Concrete Block Association (OCBA) in masonry testing.


The company operates on the philosophy that a high level of quality and technical expertise is not enough. The personnel strive to anticipate a client’s needs in advance to be ready to act quickly. On a construction project, the staff acts with diplomacy as part of the overall construction team in order to be most effective in achieving the necessary quality control.


Geotechnical Services

St. Lawrence Testing & Inspection offers a range of geotechnical services for clients in Cornwall and throughout Ontario.

  • Soil investigations for buildings, roads and civil engineering structures
  • Foundation inspection of footings, piling, caissons and shoring
  • Compaction control and laboratory testing


Quality Control

When you hire St. Lawrence Testing for your building or civil engineering project, you can expect attentive service from a team of qualified inspectors. Some of our services include:

  • Testing and inspection of soil, aggregates, concrete, reinforcing steel, masonry, precast, asphalt, insulation, moisture barriers, waterproofing and roofing
  • Structural steel inspection: shop fabrication, field erection, welding, painting and paint thickness tests; (NDT carried out by an affiliated firm)
  • Testing and evaluation of dimension stone
  • Testing and evaluation of wall systems


Environmental Services

St. Lawrence Testing prides itself on its commitment to eco-friendly testing and inspection services in Ontario. Trust us for a complete array of environmental services, including:

  • Phase 1 and 2 environmental site assessments
  • Site characterization and remediation
  • Site clean up and decommissioning


Additional Services

No matter the specifics of your construction or civil engineering project, when you hire St. Lawrence Testing you can rest assured that their knowledgeable team will be able to handle any of your construction tasks. Our additional services include:

  • Structural and failure investigations
  • Chemical investigations (lab tests carried out by an affiliated firm)
  • Building inspection and condition surveys
  • Technical testimony for litigation

St. Lawrence Testing is prepared to offer you the finest in construction and civil engineering oversight. Contact us today for more information on our many beneficial services.


Professional Associations

●   Canadian Council of Independent Laboratories

●   Canadian Society for Civil Engineering

●   Canadian Geotechnical Society

●   American Society for Testing and Materials

●   Ontario Chamber of Commerce

●   Cornwall Chamber of Commerce

●   Professional Engineers Ontario

●   Union Internationale des Laboratories Indépendants

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