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Post by so49curious on Dec 28, 2012 11:24:05 GMT
In the market for a SO49 (soon) and just checked out a 2004 model.
I read from a Zanshin post that the teak decks were initially screwed during glue curing then removed and the holes epoxied and plugged (wood). However, the deck on this boat had hundreds of screws mostly partially hidden by the caulking.
Of course, due to the water ingress possibility, I now wondered if this is normal on all SO49s, only older models, or a one-off. (Decks were apparently factory fitted)?
Also, is the balsa core on older modeld discontinuous, or again, only on later models?
I would really appreciate the advise of your experience!
... and many thanks in advance.
John
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Donrob
Full Member
Sun Odyssey 43DS
Posts: 40
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Post by Donrob on Dec 28, 2012 23:20:57 GMT
About three years ago I sanded my 2003 SO 43 DS teak decks and what looked like nails started to appear between the teak strips and the caulking in several places. Each year, with the erosion of the teak these nails are showing up more and more.
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Post by tedp on Dec 29, 2012 9:52:45 GMT
I would be careful with any boat that has a screw fitted teak deck where the screws haven't been removed and the holes plugged with epoxy. Water ingress in the balsa core can do extensive damage. There is a Dutch language website here, with photos of the damaged deck of a Voyage 12.50. Look at this photo especially. |
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Post by Zanshin on Dec 29, 2012 10:08:55 GMT
(Darn, my whole previous long text disappeared, now I don't have the energy to repeat it all)
I'm not sure what Donrob is seeing, but screwed-down teak decks have the screw-holes plugged with little teak bits, so if there are screws or something metallic appearing in areas with no plugs then it will most likely be some other issue.
I believe that Jeanneau has been using teak planks for years, but it would be worth dropping a line to Jeanneau directly to ask them about their practices for the 2003 year (BTW, nice boat and year, I had the same vintage, but without teak decks). Perhaps it wasn't a factory job - in any case I would have the surveyor look for a soft core; which I admit that I have no idea how to do non-destructively.
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Post by so49curious on Dec 30, 2012 4:29:17 GMT
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Donrob
Full Member
Sun Odyssey 43DS
Posts: 40
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Post by Donrob on Dec 30, 2012 4:36:49 GMT
Zanshin, my teak decks were factory fitted. I will see if I can get a photo of what I am talking about so the author of this post can see if we are talking about the same thing.
Thank you to tedp for the links. Pity we cannot read Dutch. I wonder how the balsa core on this Voyage 12.50 ended up like this; would it simply be age or could this boat have been neglected. The condition of the teak in the first two photos does not look so bad. It could be that the damage to the balsa core occurred where it was penetrated with bolts passing through to hold fittings on the deck and these holes had not been properly sealed.
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Post by davideso37 on Dec 30, 2012 9:02:30 GMT
As the teak on the seats and cockpit floor of my 2006 SO37 wears ever so slowly several metal staple ends have appeared. I used to build moulded ply yachts with staples to hold the timber veneer in place until the glue dried and I believe the metal on my yacht is nothing more than staple ends that were not removed. When enough is showing I will extract them by seizing the exposed end between the ends of two very sharp chisels. Don't try this at home!!!!. I clean the teak regularly and think I will get another six or more years at least before any serious work is needed.
Regards
David
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Post by tedp on Dec 31, 2012 6:12:42 GMT
That surveyor link is an eye-opener indeed. I'm glad our boat doesn't have a core hull, only the deck is either balsa or foam core. I once repaired a damaged foam core bottom on an Optimist dinghy using the same approach for drying out mentioned in the first link. Drill a grid of holes half into the sandwich and force dry the material inside. I exposed the little boat's bottom to summer sun for a few weeks, covered in a clear plastic sheet with spacers under it. When this didn't fog up anymore on the inside I considered it dry and did the repairs. Anyway this Dutch link I mentioned before says they wanted to sand the teak, then found in some places it was too thin to sand. The caulking came out in a few places, but more worrying was the fact the deck seemed to give under pressure near the shroud attachments. These were correctly fitted to pull rods attached to the hull. What followed was a tale of sorrow but I think they did the right thing. They experimentally opened one area and found there were a number of unsealed holes used to fit rows of spacers when they laid the teak planking. Some of the fittings had been attached without sealing the core under them. A 30x40cms area of the top layer of the GRP proved to be loose. So they decided to expose the entire deck, removing fittings, then the teak which proved to have been glued very strongly. Eventually they used an electric tool to shave off the teak as cleanly as possible, which took them about 30 man hours to do. After cleaning off the teak sealant, the deck proved to have several large unsound areas. So off came the GRP top layer which exposed large areas of wet balsa. Near the shroud attachments the hardwood inserts were rotten. They're drying it out now to see what can be done. Coming from a plywood boat background I advised them to leave as much in place as they can, dry it out thoroughly, then inject it with a particular brand of epoxy resin that soaks into the fibers. When that has set you can start repairing the holes, sand it flat and glass in the repaired deck. I haven't yet heard from them... |
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Donrob
Full Member
Sun Odyssey 43DS
Posts: 40
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Post by Donrob on Jan 1, 2013 11:42:44 GMT
Further to my earlier post I have taken a picture (attached) of my teak deck with what looks like steel nails showing. These were not visible when I bought the boat in 2007 and a few started to show up when I sanded the deck about three years ago. Since then, with each year that passes more and more are showing up. The boat is a 2003 SO 43 DS. I would be interested to know if other users of the forum have anything similar and know more about them.  |
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Post by tedp on Jan 1, 2013 13:18:45 GMT
They look like spacers left in place. As long as they haven't been removed I'd say the risk is limited unless the caulking is loose. If you want the caulking re-done at some stage I'd remove them, check the holes that are left for moisture, then seal them with epoxy before re-caulking.
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Post by so49curious on Jan 4, 2013 2:51:06 GMT
I mentioned in an earlier post that upon the advise of Zanshin I would contact Jeanneau and let you guys know the response...
--- snip
Dear Sir
This teck deck is probably not from the yard. Our deck have sandwich balsa (where is flat, where you have a gelcoat gripp...)
Cordialy
Jérôme
--- snip
This to my request for information as laid out in my original post referring to hundreds of screws in a teak decked SO49 (2004). The above is not very informative, but I believe Jérôme is trying to say that the decks are glued - question is was this always the case?
Unfortunately it appears none really knows the evolution of Jeanneau's teak deck laying methods... :-)
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Post by jackpot49 on Mar 13, 2013 13:36:35 GMT
Hi John, I just found this site and can tell you that I have the same problem with my SO49 from 2004. Yesterday I sent a request to Jeanneau and to a few German sailing forums . My boat was delivered originaly to England. I have exactly the same appearing, more than 200 screw heads . I am waiting now for a reply from Jeanneau. Please let us keep in touch for infos and what to do.
Ralf
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Post by TINA on Sept 19, 2014 9:49:40 GMT
About three years ago I sanded my 2003 SO 43 DS teak decks and what looked like nails started to appear between the teak strips and the caulking in several places. Each year, with the erosion of the teak these nails are showing up more and more. Dear Donrob. What is the End of the teak deck story. Which solution did you choose? I have a SO43DS 2001 with the same problem.
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Post by super g on Sept 20, 2014 6:24:37 GMT
I've a 2003 40ds and have had the odd screw showing through the caulking as we'll. I've carefully drilled the heads off, which should give several more years before anything shows again.
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Post by TINA on Sept 20, 2014 13:51:12 GMT
Dear clouds,
how did you treat the holes? Which caulking did you use?
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