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Thread: Dry Hull Repair

  1. #36
    Join Date
    Mar 2006
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    Yolo County
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    5,854

    Default Re: Dry Hull Repair

    Thanks, Larks,

    Follow on question, prolly should go in misc. boat. Actually, I did read and follow that thread, but not in years, but I haven't been upstairs for a long while, since I used to read every thread in every subforum every day, but for years now, feeling sated, I do just the bilge and the tools resources techniques and misc. boat.

    So, my boat is a trailer sailer strip-planked in full-length, clear sitka spruce. It has been over my concrete driveway, under blue canvas over a plastic sheet, for three years without getting dipped. There is a crack opened up forward. The deal is that now the Minister of All Things and All Other Things as well, the Grand Poohbah, bless her wholey designation, has influenced my decision to pass the sloop on to some other lucky soul, with the faint hope of resurrecting my life dream, shattered life dream, with a trailered (somewhere off the premises, so She can more easily see down that side of the street, IOW, not in the damn driveway) motorized version, as in specifically without sails. And so I have to make sure that I do the right thing for said lucky stiff, 'cause I don't relish any bad boat karma.

    The ethylene glycol swells the wood and then cures or dries to a solid, leaving the wood dry and taken up, mostly. I've tried it on small stuff and turned bad checks into nearly completely closed up checks.

    Since I first noticed that the deck seams had opened up and then that there is a little bit of daylight in the hold near the bow, I have been hosing it down on the outside, deck and rubrails.

    I guess I have my answer; I'll figure a way to rig a bath on a shoestring, like I don't have enough on my plate..grrhmbl...

    Thanks for all your help, guys.
    Last edited by Jim Mahan; 07-03-2018 at 07:57 AM.
    I don't care to know what the tough do when the going gets tough.

    I am interested in what the enlightened do.

  2. #37
    Join Date
    Sep 2007
    Posts
    1,158

    Default Re: Dry Hull Repair

    Quote Originally Posted by jstafford View Post
    Dirty water as in a sewage pump? When I looked up pumps over the weekend I saw clear water and sewage as types. I can't get away with a clear water pump?
    Sump pumps are dirty water pumps. They can handle debris and dirt in the water without destroying the impeller. Submersible pumps may not include a float switch; a needed option.

  3. #38
    Join Date
    Jun 2018
    Location
    Lake Odessa, Mi, USA
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    72

    Default Re: Dry Hull Repair

    Any pics of how you set that bath up?

    Quote Originally Posted by Larks View Post
    Yep, I have and there are endless threads and discussions on here about it. I did one myself and happily found that it works well enough with some timbers but not so well with some others http://forum.woodenboat.com/showthre...ghlight=glycol
    - but I’d suggest don’t waste your time and money. If my experience can help and if you are going to leave your boat out of the water for a little while, build her a bath as I did for my H28 and as I mentioned above. Ultimately it is the simplest, easiest and most foolproof way to get her timbers back to where they should be before you relaunch her.

  4. #39
    Join Date
    Jun 2018
    Location
    Lake Odessa, Mi, USA
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    72

    Default Re: Dry Hull Repair

    So there are some challenges with getting her in the water yet this year(no slips available). If she is not going to make it into the water should I do hull work now or just wait till spring? I would hate to do the work now to just to have to do it again in the spring.

  5. #40
    Join Date
    Apr 1999
    Location
    West Boothbay Harbor, Maine
    Posts
    23,560

    Default Re: Dry Hull Repair

    In post #7 you wrote that access to water at the site of the boat is a problem, right? Or has the boat been moved? Before doing any 'hull work', whatever that may be, you might try hiring a water truck or tank to try to swell the hull up (carefully, as suggested above!) The hull may be perfectly sound....
    If I had a dollar for every girl who found me unattractive, eventually they would find me attractive.

  6. #41
    Join Date
    Jun 2018
    Location
    Lake Odessa, Mi, USA
    Posts
    72

    Default Re: Dry Hull Repair

    By work I'm talking scraping and painting with a little caulk work. My expert tells me the hull is going to be just fine when she finally hits the water.

    Quote Originally Posted by rbgarr View Post
    In post #7 you wrote that access to water at the site of the boat is a problem, right? Or has the boat been moved? Before doing any 'hull work', whatever that may be, you might try hiring a water truck or tank to try to swell the hull up (carefully, as suggested above!) The hull may be perfectly sound....

  7. #42
    Join Date
    Jan 2009
    Location
    se pa (Bristol PA)
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    3,106

    Default Re: Dry Hull Repair

    Quote Originally Posted by jstafford View Post
    By work I'm talking scraping and painting with a little caulk work. My expert tells me the hull is going to be just fine when she finally hits the water.
    Chain the expert to the boat on launch day...
    Denise, Bristol PA, Oday30, Anchor Yacht Club, On tidal Delaware River. my current project; http://forum.woodenboat.com/showthre...0-Ducker-Resto

  8. #43
    Join Date
    Jul 2007
    Location
    Wongawallan Oz
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    15,248

    Default Re: Dry Hull Repair

    Quote Originally Posted by jstafford View Post
    Any pics of how you set that bath up?
    Yes - the trick is to get a membrane that won’t hole too easily if you pinch it passing it under the hull (as I initially did using builders plastic) and to get it pressed as close to the hull as possible with ply and any scraps of carpet or foam or anything between the ply and membrane to hold it closer to the hull. This is to minimise the amount of water required to wet the hull timber and so the weight on your bath frame.

    This is the current set up - pretty basic - the short uprights holding the ply in place are bolted through under the boat stand to pull the ply tight to the hull



    more throughout the thread here: http://forum.woodenboat.com/showthre...n-quot-rebuild
    Larks

    “It’s impossible”, said pride.
    “It’s risky”, said experience.
    “It’s pointless”, said reason.
    “Give it a try”, whispered the heart.

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  9. #44
    Join Date
    Jul 2000
    Location
    N.E. Connecticut.
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    6,143

    Default Re: Dry Hull Repair

    If she is not going in the water this season I would hold off on any bottom work until next season. One reason being any seam compound will dry out and harden up before them, and you want that to be soft when she hits the water.

  10. #45
    Join Date
    Jun 2018
    Location
    Lake Odessa, Mi, USA
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    72

    Default Re: Dry Hull Repair

    I just don't see how I could accomplish this. There is no power or water available where she sits. Not sure how to get the tarp under her keel. That is going to be one big tarp and structure in my case.

    Quote Originally Posted by Larks View Post
    Yep, I have and there are endless threads and discussions on here about it. I did one myself and happily found that it works well enough with some timbers but not so well with some others http://forum.woodenboat.com/showthre...ghlight=glycol
    - but I’d suggest don’t waste your time and money. If my experience can help and if you are going to leave your boat out of the water for a little while, build her a bath as I did for my H28 and as I mentioned above. Ultimately it is the simplest, easiest and most foolproof way to get her timbers back to where they should be before you relaunch her.

  11. #46
    Join Date
    Jun 2018
    Location
    Lake Odessa, Mi, USA
    Posts
    72

    Default Re: Dry Hull Repair

    At the least I can get her bottom scraped and pianted. What is the best process for prepping the hull? Heat gun? Anybody tried the Wagner Paint Eater?

  12. #47
    Join Date
    Jan 2002
    Location
    RI ,USA
    Posts
    1,492

    Default Re: Dry Hull Repair

    Great advice. I've seen many boats die that way. Love the metaphor.
    Quote Originally Posted by Phil Y View Post
    Congratulations, she looks/looked wonderful. My only suggestion is not to go stripping out too much. Unless you are an experienced big boat builder and really know what you are getting into. Lots of boats die that way, stripping stuff out is easy, it's the rebuild that stalls. Eat that elephant one bite at a time.

  13. #48
    Join Date
    Jun 2018
    Location
    Lake Odessa, Mi, USA
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    72

    Default Re: Dry Hull Repair

    Well, first of many projects pretty much complete. Her bottom has been scraped, sanded, caulked and painted.20180726_152634_resized.jpg20180802_204305_resized.jpg20180802_204321_resized.jpg20180802_204405_resized.jpg

  14. #49
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    Dec 2003
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    Sound Beach, NY
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    3,610

    Default Re: Dry Hull Repair

    Looks great!

  15. #50
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    Nov 2014
    Location
    Seattle, WA
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    2,953

    Default Re: Dry Hull Repair

    Nice work! What's next? I'd suggest servicing the seacocks and repacking the stuffing boxes while you have her out of the water. Might not be a bad idea to do the cutless bearings as well.

  16. #51
    Join Date
    Jun 2018
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    Lake Odessa, Mi, USA
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    Default Re: Dry Hull Repair

    Quote Originally Posted by cstevens View Post
    Nice work! What's next? I'd suggest servicing the seacocks and repacking the stuffing boxes while you have her out of the water. Might not be a bad idea to do the cutless bearings as well.
    Next is getting the onboard water tanks and pump working. I want to use a hose to start chasing the water leaks and getting the cabin fixed up and painted.

  17. #52
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    Jul 2007
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    Wongawallan Oz
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    Default Re: Dry Hull Repair

    A thought re dampening the hull timbers something along the lines of how a solar still or ground condensation trap might work - though without ever having tried it myself to confirm that it’d work in this case.......:

    I’m kinda wondering what level of positive effect dropping plastic to the ground all the way around from the chine or from the white plastic cover might have, creating a tent around the hull. It’d at least stop further drying out through wind and sun and I have a suspicion that the ground moisture being trapped in the tent may provide a level of humidity that be more beneficial in the short term to swelling your planks than it would without.

    A bit like my hull bath but using the earth as the sump/water source and as the base of the bath - (mine’s on concrete so it’d have the opposite effect)
    Larks

    “It’s impossible”, said pride.
    “It’s risky”, said experience.
    “It’s pointless”, said reason.
    “Give it a try”, whispered the heart.

    LPBC Beneficiary

    "Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great!"

  18. #53
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    Nov 2004
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    Port Townsend WA
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    11,903

    Default Re: Dry Hull Repair

    One trick that I have found to be successul is to staple burlap to the planking along with a soaker hose hung around the waterline. Uses only a little water and does keep the planking tight.
    Jay

  19. #54
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    Jul 2007
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    Default Re: Dry Hull Repair

    Quote Originally Posted by Jay Greer View Post
    One trick that I have found to be successul is to staple burlap to the planking along with a soaker hose hung around the waterline. Uses only a little water and does keep the planking tight.
    Jay
    This guys problem Jay seems to be that he doesn’t have any water available near the boat to run a hose from.
    Larks

    “It’s impossible”, said pride.
    “It’s risky”, said experience.
    “It’s pointless”, said reason.
    “Give it a try”, whispered the heart.

    LPBC Beneficiary

    "Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great!"

  20. #55
    Join Date
    Apr 2015
    Location
    St. Helens, Oregon
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    1,282

    Default Re: Dry Hull Repair

    Maybe Jay's burlap and soaker hose fed from a 30 Gallon carboy or two? Drape it with plastic and feed it a couple of times a week? Labor intensive, but possibly worth it. Think drip irrigation.

  21. #56
    Join Date
    Feb 2017
    Location
    Seattle, W.A., U.S.A
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    56

    Default Re: Dry Hull Repair

    Burlap and soaker hose does seem to work. And if one doesn't have easy water access you could probably just use a garden watering can twice a week. Might not be perfect, but it's better than nothing.
    Nicholas

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