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Humidity in Weld Shop

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  • Humidity in Weld Shop

    I guess this relates to "our" forum.
    I recently moved from Phoenix to Louisiana. Lived here years ago so I knew what to expect regarding the humidity.
    What effects does extreme humidity have on consumables/equipment and what steps can I take to minmize the negative effects.

    Can any of you give me some tips on de-humdifying my shop short of a full a/c unit. Shop is 800 square feet. I know "I am Blessed", have lived in a one car garage shop for 30 years.

    Any help is much a appreciated.


    P.S. Am I the only one that reads this forum at odd hours??

  • #2

    Humidity is hard on your consumables. It will cause your stick electodes to degrade quicker and cause considerable corrosion on MIG and TIG fillers. You can purchase a dehumidifier and place in your shop. I had one several years ago -actually 25 - and it wouold draw out a couple gallons of water a day. They can be found at Sears for $200-$300.

    Take care in your consumables storage. Use an old refrigerator and place a 60 watt light bulb inside that burns around the clock. The heat will cause the air to circulate within the box and reduce the amount of moisture. I store some specialty rods in plastic tubes with o-rings seals and throw in a few packs of dessicant. Most shoes and some other items, radios, vcs, coffee pots, etc. are shipped with silica gel packs to help keep them dry. I just scarf them up and drop them into my rod containers.

    Humidity is also hard on your equipment. If you don't run it every week, then I would probably fire it up for a good 30 minutes once a week to help burn out any mositure that may be lurking. This will also give you some additional arc time. I really enjoy welding with my Dynasty when its just for fun or a neighbor down the street. I weld so much for money that I've forgotten how good it feels to do something for myself or one of my neighbors that's a freebie.

    Speaking of which I have an old aluminum dock plate in shop to finish up-fortunately for money. It may take a couple of hours. I wish you well on your new found problem.


    • #3


      Hawk gave you some good tips. I live two hours south in Alex and have fought this problem forever. If your shop is well insulated and your floor has a vapor barrier underneath, it is easier to control.

      A big no-no is to open doors or windows when it rains or humidity is very high. Thats a no win situation.

      I got a small frig out of an RV for storing rods and other components. They are super insulated. Putting a small bulb inside like Hawk suggested really prolongs the life of rods.

      Also, I bought a gallon can of dessicant years ago and put it in screw bags. These I put in weldersrod cans, tool chest drawers etc.
      When it starts turning pink I put it on a pie plate and bake it until it turns blue again. That stuff lasts forever.

      I wish you well.



      • #4
        I've taken 1" PVC pipe 3" long and glued a cap to one end and a threaded end and screw cap on the other end. Makes a great place to store tig consumables and really cheap. (thrifty) I label the outside with a permanent marker and drop a desicant bag inside for summer humidity.


        • #5
          lots of good suggestions there... the silica gel for consumables as Moe suggested is cheap and easy... if you are unable to find a good local source let me know ... will post some links.. as he says .. the stuff lasts forever..
          hope this helps

          The more you know, The better you know, How little you know

          “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

          Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

          My Blue Stuff:
          Dynasty 350DX Tigrunner
          Dynasty 200DX
          Millermatic 350P w/25ft Alumapro & 30A
          Millermatic 200

          TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000


          • #6

            Another good product to keep rust off of metal objects in drawers or boxes is moth balls. They contain camphor which retards oxidation. I use them in my machinist tool chests to keep my precision tools in good shape.

            Thanks to Heiti for adding silica gel (dessicant).