Thomac Services Limited
Established in 1981, Thomac Services Limited provides online high-pressure leak repair services to commercial and industrial clients in Atlantic Canada and beyond.

About US
Since 1981, Thomac Services Limited has been committed to keeping industrial operations running safely and efficiently. Serving clients across Atlantic Canada and beyond, our mission is to deliver reliable, high-quality leak repair and maintenance solutions that minimize downtime and maximize safety.
We believe in doing the job right the first time. That means combining technical expertise with innovative methods, fast response times, and a strong commitment to health, safety, and environmental standards. Whether it’s a complex leak repair or a precision-machined containment solution, every project is handled with care, integrity, and professionalism.
At Thomac, we value long-term partnerships, clear communication, and problem-solving that works under pressure—literally.
Our Services

Online Leak Sealing
Stop leaks without shutting down your systems—steam, water, chemical, and valve leaks.
Piping System Repairs
Repairs to valve flanges, elbows, expansion joints, unions, pinholes, and more.
Bolt Tensioning
Precision bolt tensioning and hot torqueing services for critical equipment and piping systems.
Containment Devices
Engineered containment devices with CRN registration and full fabrication services.
Steam Loss Surveys
Itemized inspections to identify and quantify energy loss through steam systems.
Valve & Remediation
Safe remediation and inline valve lapping services for long-term system performance.
Have an Emergency Leak Repair?
We’re on call 24/7 to fix leaks fast—with no need for shutdown. Trust Thomac Services for immediate, expert repair solutions when every second counts.
Frequently Asked Questions


Do you offer emergency leak repair services?
Yes—Thomac Services provides 24/7 emergency leak repair across Atlantic Canada. We’re available anytime your operation is at risk due to leaks or pressure system failures.
Can repairs be done while the system is still running?
Absolutely. Most of our services, including leak sealing and piping repairs, are performed online—meaning we can safely carry out repairs without shutting down your systems.
What types of leaks do you repair?
We handle steam, water, chemical, and valve leaks on high-pressure systems. We also seal leaks on flanges, unions, elbows, mixers, and more.
What industries do you serve?
We work with clients in manufacturing, energy, utilities, food processing, pulp and paper, chemical production, and other industrial sectors.
Are your containment devices certified?
Yes—our custom containment devices are engineered in-house and registered with a Canadian Registration Number (CRN) where required.
Do you work outside of Atlantic Canada?
While our primary service area is Atlantic Canada, we’re open to serving clients beyond the region depending on project scope and urgency. Contact us to discuss your needs.