Workspace Question

I built a couple work spaces over the last week … a 6’x4’ table for a work area, and a 4’x4’ table for the X-Carve (when i get it) … both are torsion boxes … do you recommend sealing them? i live in the midwest … and the tables will be in my unheated, attached garage.

both are 2x4 frames, with plywood/sanded plywood for the flat areas.

It would most likely be best to seal. However, I live in south Louisiana and have not sealed mine in over three years with no problems. lol, I 'm not talking my own advice.