WET CABIN FLOOR AFTER IT RAINS?

Discussion in 'Classic Sea Rays' started by Steve255AJ, Oct 8, 2021.

  1. Steve255AJ

    Steve255AJ New Member

    6
    Sep 29, 2021
    Six Mile , SC
    255 AMBERJACK, 1985
    (trailered on) VENTURE COMMANDER SERIES 7300
    5.7L (350) 260HP; SINGLE. ALPHA 1
    Okay, so I'm new here and just acquired a 1985 255 Amberjack in August.
    It needed a lot of TLC when I got her but I got it so cheap ($3500) I took a chance and I'm glad I did because it's been better than expected. Cleaned up great and runs perfect, all electrical systems work perfectly (which surprised me) and I've had it in Lake Keowee 5 times so far.
    Some small issues I've been taking care of with great success BUT one item I've been working on I have only had limited success. Water leaks, so much fun, resealed the starboard rub rail (that fixed some leaks), resealed the horn and horn wiring harness (that fixed still more leaks), resealed the running light fixtures wiring holes (fixed still more leaks), resealed the hatch supports (fixed that leak). Every time it rains the cabin floor is soaked, the step down pump is brand new and works perfectly, the water is NOT over flowing from the step down pump area, it seems to be coming out from under / behind the head area and draining onto the floor of the cabin just forward of the step down bilge area. This is causing the cabin floor to get wet and the water drips into the step down bilge and then gets sucked out by the pump when enough gets in there. There are NO visible leaks anywhere now, I go in the cabin when it's raining and I can't see any water dripping anywhere, I've fixed all the leaks I could see, SO, where is this water coming from??? How is it getting on the floor???
    Does anyone have any ideas? Has anyone had a similar problem and if so, how did you resolve it? Any help / ideas would be appreciated, I really want to get this boat back as close to 100% for next season.
     
  2. Pirate Lady

    Pirate Lady Well-Known Member

    Jun 2, 2020
    Chesapeake, Middle River
    1991 250 Sundancer
    7.4 Bravo 1
    There is another fella dealing with a frustrating rain water leak, Freddie?, in that thread someone mentioned stanchions, you didn’t, try those.
     
  3. Pirate Lady

    Pirate Lady Well-Known Member

    Jun 2, 2020
    Chesapeake, Middle River
    1991 250 Sundancer
    7.4 Bravo 1
    See General Discussion/ Rainwater leaking in hull thread.
     
  4. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    Do you have a window in the head? Water can leak down between the head wall and the outer hull, then underneath the head floor. I don't know the whether or not your boat has a fiberglass head or just carpet glued to the hull side.

    FYI, later models had a carpeted section below the head door that was removable by finding the screws imbedded in the carpet. Again, I don't know your boat well enough to say if you have that, but that would give you some better access.

    By the way, when you sealed the rubrail... did you remove both the insert and the vinyl part that's against the hull?
     
    techmitch likes this.
  5. Pirate Lady

    Pirate Lady Well-Known Member

    Jun 2, 2020
    Chesapeake, Middle River
    1991 250 Sundancer
    7.4 Bravo 1
    Man, LD, i gotta tell ya, I got a good one. I read so many water leak problems on here. 30yo and mine is bone dry, no leaks, no drips, SR workers must have been sober that day.
     
  6. Steve255AJ

    Steve255AJ New Member

    6
    Sep 29, 2021
    Six Mile , SC
    255 AMBERJACK, 1985
    (trailered on) VENTURE COMMANDER SERIES 7300
    5.7L (350) 260HP; SINGLE. ALPHA 1
    Thanks for your responses,
    I will reseal the stanchions and see if it helps.
    There is an area between the outer hull and the head inner wall behind the toilet. I looked in there and there is a small amount of water coming in at the very back corner under the instruments area. I'll take that apart this weekend and see if I can find the source.
    Didn't take out the vinyl from rub rail, didn't want to take a chance of it not going back in. I sealed the top edge with clear silicone and any other gaps I could see. It made a big difference, it totally stopped the leaks in the V berth along the edge near the windows.
    I'll also check out the other thread.
    Thanks again for all your help.
     
  7. Lazy Daze

    Lazy Daze Well-Known Member TECHNICAL Contributor GOLD Sponsor

    Apr 21, 2009
    PA
    Various
    Various
    So, just a quick side note on that... the top edge should NOT have to be sealed to keep water out. That area was never meant for that purpose. The "sealing" happens underneath the rubrail - both where the two halves of the boat are put together and all of the screw holes. That's where the actual leak is - those areas have just given way over time - pretty normal for a boat that's nearly 40 years old. Technically speaking, you put a band-aid on it :) You'll just have to keep applying that band-aid...
     
    techmitch likes this.
  8. importmonkey

    importmonkey Opinionated Member

    Jul 9, 2015
    Space Coast, FL
    2005 260DA (sold)
    2007 44DA (sold)
    ...shopping
    Big ones
    ^^^^^
    This isn't THAT big of a job, to be honest. Certainly a chore, and I felt overwhelmed when I started...but not terrible.

    These pics may help.

    20161026_081241.jpg 20161026_081248.jpg 20161026_081258.jpg
     
    techmitch likes this.
  9. Woody

    Woody Well-Known Member PLATINUM Sponsor

    Nov 20, 2007
    N. Wisconsin/Lk Superior
    2005 420DA
    Cummins 6CTA8.3
    Check your windshield mount screws at the base of the windshield. I don't know what your boat looks like but on many they are behind a rubber insert cover that can be removed and re-installed. Remove and re-tighten and use sealant on each screw.
     
    techmitch likes this.
  10. Wanderer 290

    Wanderer 290 Active Member

    456
    Jul 1, 2019
    01 sea ray 290 sundancer
    Twin 5.7 b3’s
    Additionally, new “screw covers” as the vinyl windshield insert are referred to can be ordered from tailor made. Match the shape and size of the existing screw covers and match to the drawings on their site.
     

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