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Fender Skirts Cracking

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  • Fender Skirts Cracking

    Most of us with units more than a few months old have cracks in the plastic fender skirts. Usually the crack is through a mounting screw hole.

    I’m guessing the cracks are a result of stress from expansion and contraction as the skirts (plastic) and the mounting surface (metal) have different expansion rates. I’ve tried tightening the screws just until the screw contacts the plastic, with no long term success.

    Has anyone found a good solution?

    A couple that I’m considering for the next set of skirts are:

    1. Drill slightly oversized holes in the plastic skirts to provide some expansion independent of the sheet metal.

    2. Skip the screws and mount with 3M VHB tape.
    Last edited by colan; 10-13-2021, 03:08 PM.
    Colan Arnold
    2016 Momentum 397TH
    Full time since 2016

  • #2
    My experience over the years has been that the cracking is due to the skirt not being drilled out before the screws were installed. The drill point on the screw has to pierce both the skirt and the side of the trailer and doesnt allow for the proper amount of tension.
    2021 Reflection 337RLS, 2021 Silverado 3500HD 6.6 gas. Nellie the wonder boxer


    • #3
      Colan - Just saw a few cracked screw holes on my 2017. I'll be following this discussion.

      The moderators for this site are not GDRV employees, but we do own GDRV products.

      Jim and Ginnie
      2017 Reflection 297RSTS


      • #4
        I had major cracks at screw holes. Here is how I solved my problem:
        2020 Reflection 273MK
        2005 Dodge Ram 2500 CTD


        • #5
          What I did for this installation, unfortunately it will be years before we know if this works, or months is it was a waste of time.

          Screws are #8 with a thread diameter of .165 inches. Not knowing how much expansion/contraction clearance was necessary,’ on one side pre-drilled to 11/64 (.172”) or .007 clearance, on the other side pre drilled to 3/16 (.188”), .023” clearance.

          Colan Arnold
          2016 Momentum 397TH
          Full time since 2016