OWSJ Reinforcement Welding

Strengthen Your Structure: Open Web Steel Joist (OWSJ) Reinforcement Welding Services

Do you need to increase the load capacity of your existing open web steel joists (OWSJs)? OWSJ reinforcement is a safe and effective solution to ensure your structure can handle additional weight. Today OWSJ (Open Web Steel Joist) reinforcement welding is used in various construction applications where structural integrity and load-bearing capacity are paramount. Below are some specific application areas where OWSJ reinforcement welding is commonly employed:

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  • Ajax
  • Ancaster
  • Aurora
  • Bolton
  • Brantford
  • Brampton
  • Burlington
  • Caledon
  • Cambridge
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  • Georgetown
  • Guelph
  • Halton Hills
  • Hamilton
  • King City
  • Kitchener
  • Markham
  • Milton
  • Mississauga
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  • Niagara
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  • Oakville
  • Richmond Hill
  • Scarborough
  • St. Catharines
  • Stoney Creek
  • Thornhill
  • Toronto
  • Downtown
  • Vaughan
  • Whitby
  • Oshawa
  • Woodbridge
  • Pickering

What are OWSJs?

Open web steel joists are prefabricated trusses commonly used for floors and roofs in commercial and industrial buildings. They offer a lightweight yet strong design, but over time or with changing use, they may need reinforcement to accommodate heavier loads.


By creating a focused heat source, welding reduces the possibility of thermal deformation and improves the dimensional stability of welded components. Because it employs a non-consumable tungsten electrode and creates clean welds with no spatter or fumes, in some situations, this eliminates the requirement for filler wire. This produces neat weld beads that save time and effort, requiring less post-weld cleaning.

Why Reinforce OWSJs?


  • Increased Load Capacity: OWSJs are designed to support significant loads, but reinforcing them through welding can further enhance their load-bearing capacity. This is crucial in buildings where heavier equipment, machinery, or additional floors are planned.
  • Structural Modifications: During renovations or modifications, existing OWSJs may need reinforcement to accommodate changes in building use or to meet updated safety codes and standards.
  • Longevity and Durability: Welding reinforcement ensures that OWSJs remain durable over time, resisting deformation and maintaining their structural integrity even under demanding conditions.

  • Signs You Need OWSJ Reinforcement:


  • Adding HVAC units or other heavy equipment: Modern HVAC systems and other rooftop equipment can put significant strain on OWSJs.
  • Installing solar panels: The weight of solar panels and their mounting structures can necessitate reinforcement.
  • Changing building use: If your building's purpose changes and requires increased load capacity, reinforcement may be necessary.
  • Structural concerns identified during inspections: Cracks, deflection, or corrosion in your OWSJs may indicate a need for reinforcement.

Our OWSJ Reinforcement Services:

Our team of experienced OWSJ welder provides comprehensive OWSJ reinforcement solutions, including:

  • Assessment and Design: Before welding, structural engineers assess the current load capacity of OWSJs and design a reinforcement plan. This includes determining the type and placement of welds needed.
  • Preparation: Surface preparation is crucial to ensure proper welding. This involves cleaning the joist surfaces to be welded to remove contaminants that could affect weld quality.
  • Welding: Skilled welders use appropriate welding techniques and equipment to apply reinforcement welds to the OWSJs. Common welding methods include arc welding, MIG (Metal Inert Gas) welding, or TIG (Tungsten Inert Gas) welding, depending on the specific requirements of the joist and the project.
  • Quality Assurance: Throughout the welding process, quality control measures are implemented to ensure that welds meet specified standards and provide the desired reinforcement strength.

Benefits of OWSJ Reinforcement:

  • Cost-effective solution: Compared to replacing OWSJs, reinforcement is a more affordable way to increase load capacity.
  • Minimizes disruption: Reinforcement can be completed with minimal disruption to your building operations.
  • Ensures structural safety: Properly reinforced OWSJs guarantee the safety and stability of your building.

Why Choose Paul for Custom Aluminium Welding Services in Toronto and GTA?

OWSJ reinforcement welding plays a crucial role in modern construction, enhancing the load-bearing capacity and longevity of steel joists. By employing skilled welders and adhering to stringent quality standards, construction projects can achieve structural reliability and safety, meeting the demands of today's complex building designs.


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