Yellowed walk thru door '04 Sundeck 240

Discussion in 'General Discussion' started by CU_Tiger_06, Mar 31, 2020.

  1. CU_Tiger_06

    CU_Tiger_06 New Member

    18
    May 24, 2019
    240 Sundeck 2004
    5.0 Mercruiser Bravo III
    I removed my boat from winter storage, and the whole thing looked clean and in good shape except for one door, the large access one behind the helm which doubles as a walk through door to the bow (part# 1753958). It has completely yellowed! I'm guessing it's from prolonged exposure to UV, then storage in the dark all winter, kind of like what happens with cheap old ABS plastics, but I was surprised this would happen on fiberglass (I think it's fiberglass). It's still functional, just an eyesore!

    Anyone know of any tricks to remove the yellow and restore back to the original white/off-white color? I was thinking about just buying a new door, but haven't been able to find this part for sale anywhere.
     
  2. Express 390

    Express 390 Active Member GOLD Sponsor

    522
    Sep 14, 2018
    South Shore of Long Island NY
    1986 SeaRay 390 EC
    1993 SeaRay 290 DA single 7.4 /Bravo 2
    1992 SeaRay 230 DA 4.3LX Alfa drive
    Twin 454 Crusaders inboards 4 blades
    Try using ON OFF wash it down with that it should take the yellow out!
     
  3. Express 390

    Express 390 Active Member GOLD Sponsor

    522
    Sep 14, 2018
    South Shore of Long Island NY
    1986 SeaRay 390 EC
    1993 SeaRay 290 DA single 7.4 /Bravo 2
    1992 SeaRay 230 DA 4.3LX Alfa drive
    Twin 454 Crusaders inboards 4 blades
    shopping.png
     
    JVM225 likes this.
  4. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    That's an odd one. I've seen so many of these 240SD's over the years and I honestly have never seen that. I wonder if something had gotten on it - some type of chemical - or possibly some odd, incompatible cleaner.

    The door isn't fiberglass/gelcoat - I'm positive of that. It's definitely some type of plastic. It's completely smooth, like gelcoat would be, though... if memory serves? You might get lucky and be able to compound it. Remove it from the boat - experiment on the backside. Try some restorer/polishes for plastic... Buff Magic, for example.
     
  5. Espos4

    Espos4 Well-Known Member

    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    Be VERY careful using that stuff inside the boat. Get a respirator with cartridges on it, Not just a dust mask. Have a hose in the boat with you and wet the floor first. You’ll need to make sure the runoff is diluted very well so nothing in the direction of flow Is damaged.

    The vapors are VERY strong when used on the exterior, I can only imagine the intensity of it when caught in a semi confined space like the walk through area of your boat.

    Just be sure to read and follow the directions is all I’m saying.
     
    JVM225 likes this.
  6. Spark600

    Spark600 Active Member

    155
    Dec 28, 2013
    Long Island NY
    2008 Sundancer with 496 SeaCore Bravo 3
    Kohler Generator
    Mercury dinghy
    496 SeaCore Bravo 3
    What Espos4 said And were gloves that stuff is strong.
     
    JVM225 likes this.
  7. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    I don't think I've ever tried, so I don't know... will On & Off, which is muriatic acid (hydrochloric), damage plastic?
     
  8. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    It’s pretty much Muriatic acid.
     
  9. OllieC

    OllieC Well-Known Member SILVER Sponsor

    Mar 11, 2013
    MinniSoCold
    Sara Belle
    2005 Weekender 215
    Mercruiser 5.0 mpi, Bravo III
    If it's the same material as my small door between the swim platform and cockpit, that seems odd. Other than me smashing my knee through it (expensive mistake), it has never faded or colored. Is it similar to this material?

    sea-ray-transom-door.jpg
     
  10. CU_Tiger_06

    CU_Tiger_06 New Member

    18
    May 24, 2019
    240 Sundeck 2004
    5.0 Mercruiser Bravo III
    Yes, similar, in fact I think it’s the exact same material as my cockpit/swim platform door also, which didn’t yellow. I’ll take a photo next time I’m out on the boat so everyone can see. I’ve see. A few home remedies for whitening yellowed plastics common on old electronics housing materials ... basically soaking in bleach/water, so I may give that a shot.
     
  11. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Worst case, you can have some paint custom tinted to match and spray it.
     

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