Roof support & joist reinforcement

JW Portable Welding & Repairs supports contractors installing solar panels and HVAC units on the roofs. Disregarding the material used for joist reinforcements as long as the majority of tasks are based on welding we will gladly help you to accomplish your project. In fact, we have accomplished a number of projects for solar power installers in London – Kitchener corridor with the majority of projects based on reinforcement of bottom and top chord as well as reinforcement of diagonal elements.


As seen in the photo gallery above, we welded ¾ round rod to the bottom chord and reinforced the diagonal supports. We have also participated in projects where the bottom chord was supported by square rods and/or flats welded to the bottom of the chord. We follow the engineering drawings to the dot using custom-made tools for marking the stitch welds positions. In my personal opinion, the square rods and/or flats welded to the bottom chords are the most comfortable for the welder and they bring the best results.


From a welding perspective, these projects do not pose a challenge to the ticketed welder. However, there some issues that general contractors and welders have to be aware when welding the joist reinforcements. These issues derive from environmental and safety reasons. Here is a short list of them:

  1. The job should be accomplished by the team of two workers, preferably two welders rotating on one welding machine. When one welder does the welding the other welder should serve as a designated spark watch (this is the law general contractors! So please have it in mind when quoting) or cut the pieces to the size.
  2. The welder must be CWB certified, the WSIB must be in order, the elevated work platform ticket has to be updated and a new “Working at Heights” training has to be done. Once again this is the law in Ontario and general contractors tend to forget about the professional obligations regarding these rules.
  3. The welding is done from the scaffold or from the elevated work platform. Welding from the ladder is not prohibited by law although it is not recommended since the welders tend to lose the sense of balance when they are following the welding paddle.
  4. The welders head is positioned close to the roof and the temperature is hot in the summer so take extra breaks and rotate each other. The workers working below the welders have no idea about the temperature difference between the temperatures on the floor and close to the roof.
  5. Open all windows and doors and wear a mask with good filters. The paint that the welder burns probably contains led, most industrial old paints do contain lead, so welders supposed to wear masks during the welding process. If you have a headache after welding a roof support, you probably inhaled the whole Mendeleev table and you have lungs of a heavy smoker.

Charge the fair price for your work. Now you know the hazards and you know the reasons for charging a fair price. What is a fair price? I will leave the price level to your discretion.

Our technological advantage, efficiency and effectiveness sets us apart in the industry.

For further inquiries or to book services please contact:

Darek, @ (519) 872-2552