Removing numerous rust spots from top side gelcoat

Discussion in 'Fiberglass/Wood/Gelcoat Repair' started by Irie308, Oct 13, 2021 at 11:38 AM.

  1. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    Our marina is near a plant of some sorts and it seems they fired up one of their smoke stacks which spewed out what looks like fine rust particles. It was while it was raining so all of the water channels on the deck slowly gathered the particles into nice streaks of rust all over the deck. I really wasn't planning on a wax job before putting the boat away for the season so wondering what i can do so that these rust stains don't sit over the winter. There are quite a bit from the rub rail up including the non skid.
     
  2. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    I've had good luck with muriatic acid
     
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  3. markrsimon

    markrsimon Active Member

    321
    Sep 1, 2018
    Cleveland, OH
    92 Searay 400 Express
    7.4L Mercruiser Gen V
    Irie308 likes this.
  4. Little Ducky

    Little Ducky Well-Known Member

    Jun 5, 2017
    Dickson, TN / Chattanooga, TN
    1998 290 Sundancer
    Twin EFI 5.0L w/Alphas
    Kohler 4kW
    I use rust-aid on my rust streaks can be found in most plumbing or cleaning isles.

    Spray it on and watch the rust streak disappear like magic.

     
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  5. Jeremygavin

    Jeremygavin Well-Known Member GOLD Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    Mary Kate On & Off works really well on rust on gel coat.
     
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  6. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Phone the plant and ask to speak to their environmental officer. Tell them what happened and ask them what they can do to rectify the situation. I will bet you they offer to have someone detail your boat rather than risk you going public with their discharge and risk much larger fines or permit renewal issues.

    I had a client once that ran a cement plant. Every once in a while their baghouse would have an issue resulting in cement dust being discharged into the air. If it settled on cars that had dew on them, it would create a concrete stain that was difficult to remove. Anyone that called got their car cleaned and waxed by a local shop that knew what to do. Kept the immediate neighbors from raising a big issue with environmental authorities.
     
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  7. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    This was my first thought. We are a dockominium so definitely brining this up at our next board meeting as there are a bunch of pissed off owners.
     
  8. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    Thanks Jeremy, will check this out.
     
  9. KevinC

    KevinC Well-Known Member

    Feb 25, 2011
    Long Island, NY
    2004 340 Sundancer
    Twin 8.1 V-drives
    You can also try Bar Keeper Friends - I would start with the liquid one. Let it sit for a little while.

    -Kevin
     
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