Rust Protection - Inner Patch Panel 70GS

Discussion in 'Color is everything!' started by tminihan, Feb 17, 2020.

  1. tminihan

    tminihan 1970 GS455 Vert - Project

    I have a 70 GS that has a metal patch welded in the lower quarter panel (8"x4") behind the RR wheel. The patch is visible from inside of the trunk - externally it looks great. How should I protect the inside - do nothing, POR-15, primer? I've always heard of weld seams eventually showing through the paint. The car is in the shop getting a conv top installed, otherwise I would have sent a few photos. If necessary I should be able to send photos in a week or so. Thanks, Tom
  2. Smartin

    Smartin Staff Member

    A non-porous paint is all you should need. POR-15 should be fine. Keep the trunk dry.
  3. tminihan

    tminihan 1970 GS455 Vert - Project

    Thanks for the quick response Smartin. Should I plan on POR-15 that whole area on both sides, patch or no patch or just focus on the patch areas? Replacing the trunk floor will be my summer project so eventually that area will get a fresh coat of trunk paint. Thanks, Tom
  4. Smartin

    Smartin Staff Member

    I suppose whatever floats your boat. If you're going to be doing more work there, then just cover up the repairs.
  5. hugger

    hugger Well-Known Member

    If it was welded solid with no pinholes it will be fine,..but POR,.seam sealer,.undercoating,..cavity wax etc will all get the job done

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