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COVID-19 Update


We do hope you are staying safe and maintaining social distancing.

We are open for emergencies, so please call us, and we will work with you to ensure we maintain high levels of safety and ensure we are able to provide you with the service you need during these troubled times.

Providing Welding and Boiler Services in the GTA, for 60 Years

Nelson Welding Ltd is a full-service boiler and welding company in Woodbridge, Ontario. For over 60 years, we have provided mobile welding and complete boiler room services throughout the Greater Toronto Area.

Emergency welding services are available 24 hours a day — call our emergency and after-hours support line at 416-742-9180.

Dedicated Welding Services for the GTA

One thing that surprises many of our customers in the Greater Toronto Area is the dedication we bring to every job. We know it’s not enough to have the expertise and extensive service background; you have to deliver on your customer promise with each and every project. When you call Nelson Welding Ltd for boiler or welding service, you can expect our team to show up on time, be professional, and deliver some of the best services in the industry.

A History of Excellence

Nelson Welding was founded in the early part of the 1950s by Nels Nelson. The current owners purchased the company in 1987 after being employed in the mechanical field since 1980. Their extensive experience has allowed them to carry on with the professionalism and knowledge base for which Nelson Welding has become known.

Professional Affiliations

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Our Projects

Check out examples of recently completed boiler projects.

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Complete boiler room services for the Greater Toronto Area.

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See why Nelson Welding is right for your welding project.

Contact Information

Nelson Welding Ltd

9-51 Roysun Rd

Woodbridge, ON L4L 8P9



24-Hour Emergency Welding Line


Fax - 416-742-6897



Business Hours

Monday – Friday: 8:00 AM - 4:00 PM

Saturday and Sunday: Closed 

24-Hour Emergency Service

Service Area

Serving the Greater Toronto Area


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