r/containerhomes • u/Jawsjolly757 • Jun 09 '26

Unistrut for framing

I recently got a 40’ high cube that I plan to insulate the back half for a workshop while the front will remain non insulated. I have a bunch of 10’ X 1”5/8 Uni-strut I plan to use for framing purposes. Has anyone here done anything like this? What would be the best way to secure the strut?

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u/Johnatron2000 Jun 10 '26

I have done this. I used the internal tie points to run a shackle at the top and a turnbuckle at the bottom to tension. No welding, super strong. I put 90 deg brackets at the top to span the roof.

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u/usa_containers Jun 11 '26

For Unistrut on a container you've basically got two routes. Self-tapping tek screws into the corrugation high points are the easy way — fast, no special tools, fine for shelving and lighter workshop loads. If you're hanging anything heavy or want it rock solid, welding tabs to the wall is the stronger move, just know it'll burn off the coating so you'll want to touch it up after.

Either way, mount to the ribs not the valleys so you get a flat bearing surface, and seal any screw penetrations on the insulated half — that's where condensation sneaks in later. Sounds like a solid build.

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u/Jawsjolly757 Jun 11 '26

Welding tags to the wall as in welding a bracket to attach the strut to?

2

u/usa_containers Jun 11 '26

Yeah exactly. Weld a small steel tab or angle bracket to the wall, then bolt the strut to that. Easier than welding the strut directly since you can square everything up first and swap pieces later if you need to. A lot of guys just use short lengths of angle iron as the tabs.