Our Services
Since 1981, Thomac Services has delivered fast, reliable online leak repairs across Atlantic Canada. We seal high-pressure leaks without shutdowns, so your operations stay safe and efficient. When every second counts, our skilled team responds quickly to keep systems running.
What We Do
Explore our services — from emergency leak sealing to custom containment solutions.
Stop leaks fast—steam, water, chemical, or valve-related.
Repairs to flanges, elbows, joints, and other pressure piping.
Precise torqueing to maintain safety under high pressure.
CRN-registered solutions custom-built for critical system leaks.
Pinpoint inefficiencies and reduce operational energy waste.
Incline valve lapping and asbestos-safe remediation services.
More About Our Expertise
With 40+ years of experience, Thomac Services is a trusted name in industrial leak repair. We help reduce downtime, maintain safety, and extend equipment life — all without interrupting your operation.
Thomac Services Limited specializes in online leak sealing, providing fast and reliable solutions for steam, water, chemical, and valve leaks—without requiring system shutdowns. Our sealing techniques are engineered for high-pressure, high-temperature environments, ensuring durability and safety during active operation.
Whether the issue is a gasket failure, a corroded flange, or a leaking valve gland, we design and apply custom-fit containment systems to stop leaks at the source. Our 24/7 availability ensures rapid response when downtime isn’t an option, helping clients in industrial, commercial, and utility sectors maintain operational continuity.
We provide expert pressure piping system repairs for critical components such as valve flanges, expansion joints, elbows, unions, pinholes, and more. Our technicians are trained to assess and repair piping issues without depressurizing the system, using clamp-and-containment technology, specialized welding, and reinforced sealing methods.
This service is ideal for facilities that cannot afford shutdowns due to process interruptions, such as manufacturing plants, refineries, and power generation sites. Every repair is performed in compliance with strict safety protocols and industry standards, ensuring reliability and peace of mind.
Thomac offers precise bolt tensioning and hot torqueing services to ensure the mechanical integrity of high-pressure flange connections and structural joints. These services are critical for leak prevention and are performed while the system remains online.
We use calibrated torquing tools and hydraulic tensioning equipment to apply uniform, calculated pressure across all fasteners. This eliminates uneven loading, extends gasket life, and minimizes the risk of future leaks. Our team are experts in working with both standard and customized bolted assemblies across a variety of industrial applications.
Our in-house engineering team designs and manufactures custom containment devices for complex and high-risk leak situations. All containment systems are built in our machine shop, tested for safety, and registered with a Canadian Registration Number (CRN) where required.
These devices are used to control leaks from valve bodies, flange assemblies, pipe welds, packing glands, and other pressurized components. We tailor each device to the specific geometry, temperature, and pressure profile of the equipment, ensuring safe installation and reliable performance—even in hazardous environments.
Our steam loss survey services help clients identify and address inefficiencies in their steam distribution systems. Using specialized instruments, we detect live leaks, faulty traps, and degraded insulation, providing an itemized report that outlines the energy cost of each issue.
These surveys are a cost-effective way to reduce energy waste, improve system efficiency, and plan for targeted maintenance. Common clients include food processors, chemical manufacturers, power plants, and pulp and paper facilities that rely on steam for operations.
Thomac provides comprehensive valve lapping and remediation services to support safe and efficient plant operation. Our inline valve lapping services restore the sealing surfaces of gate and slide valves, improving flow control and extending valve life.
We also perform asbestos abatement and remediation, including removal and encapsulation of hazardous materials in compliance with all provincial safety and environmental regulations. These services are often performed in tandem during shutdowns or repair projects to ensure safe working environments and long-term system integrity.
Contact Us for Online Leak Repair
Ready to get started? Contact us today to schedule your assessment.
You can also review industrial safety standards at Canadian Centre for Occupational Health and Safety.