Best way to patch or fiberglass rust

Discussion in 'Maintenance & Upkeep' started by erickirby12, Oct 29, 2013.

  1. erickirby12

    erickirby12 New Member

    I was looking at my rocker panels and there is a rust spot that is about to make a hole but whhat is the best way to fix that before it happens
  2. Pikey

    Pikey Moderator Staff Member 5+ Years ROTM Winner 5000 Posts

    moved to maintenance & upkeep sub forum. changed title to make subject more clear.
  3. ChevyFan

    ChevyFan The Sheriff Staff Member 5+ Years 1000 Posts

    How big are this rust areas? Small like a dime? Quarter? Larger?

    There are a couple of ways to go about this. Everything from sanding and bondo to just covering it over with Diamond plate (I've got a buddy who that's all he would do...)

  4. j cat

    j cat Epic Member 5+ Years 1000 Posts

    you will need a cut off wheel tool . you cut out all the rusted metal . then get some galvanized sheet metal and make a patch to fit. using a rivet tool/drill install rivets to hold in place. then use fiberglass reinforced bondo to cover the area. grind down so you get is level / kinda smooth. then use regular bondo to get the surface very smooth no pin holes. then prime/paint.

    with rust coming thru the rocker you will have a good amount of metal to be replaced probably a 4 in X 12 inch section ...
  5. poncho62

    poncho62 Active Member 2 Years 100 Posts

    Your best bet is to cut out the rusted material, cut a patch of sheet metal the same size and weld it in. You then grind down the welds and finish with as little bondo as possible. A good body man can do it without using any bondo. Then epoxy prime and paint.

    A quick fix is to grind the spot a bit, dent it in a little and fill it with short strand fiberglass, sand, prime and paint....

    Depends on how long you want it to last

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