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Hull Deck Joint / Mildew / Structure

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Fendant View Drop Down
Admiral
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Joined: 03 November 2012
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    Posted: 17 November 2013 at 23:31
I am posting this under chitchat as I think that at least some production boats from 2013 might be affected.
When we took our boat over in June/July I detected that the hull deck joint was still tacky. I was reassured by the yard and the dealer that this was only temporary until the chemical reaction fully cured the PU.
 
Now after a 1/2 season the hull deck joint is still tacky and has mildew on its surface. It looks terrible. I have two questions:
A) Cosmetic
Does anybody have an idea how to fix this permanently ?
B) Structural
As the hull deck joint is apparently not fully cured, is the structural integrity of the boat compromised ?
Frank
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Yeoman Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2013 at 08:34
Hi Frank,
 
I can't answer all of your questions and I am unsure why the sealant is still tacky but I can assure you that this sealant has nothing to do with the structural bond between hull and deck.
 
This is purely a cosmetic seal and it is unusual for it to have mildew on like this.  Looks like it is probably a faulty batch from the Sika if still tacky.
 
It could be cleaned up with a rib cleaning product but I would imagine it should be removed and replaced which is a nice simple job, although fairly time consuming. I would ask your dealer to have it replaced by a local shipyard.
 
Sorry i can't help further but wanted to put your mind at rest with regard to the structural side of things
 
Kind regards
 
Phil
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Admiral
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2013 at 08:44
Thanks very much Phil. I didn't know that it is a pure cover/watertight seal over the hull deck joint.
This really reassures me Thumbs Up
 
In the German forum are several posts which seem to have the same mildew prob. I was greeted "welcome to the club" by one forist.
 
My dealer has already suggested that he will clean and reseal, should be easy in spring before launching. Seems that he is as customer minded like inspirationBeer


Edited by Fendant - 18 November 2013 at 08:46
Frank
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Yeoman Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2013 at 08:58
Hi Frank,
 
That sounds good to me.
 
We deliver around 40 new Hanses each year and have not yet had one with a sealant problem.  It tends to get dirty but this is to be expected and cleans easily
 
Kind regards
 
Phil
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark&Catherine Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2013 at 09:47
Hi Frank,
 
Where abouts is this part of the boat?
 
Mark
385 ubulukutu sail number GBR 3350L in Turkey and Greece with Mark and Catherine
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2013 at 15:01
Hi Mark,
 
it is from the transom. I could not get to the laterals as the boat is already wrapped for the winter. But its looks as sh......y as the transom up there.
 
Frank
Frank
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark&Catherine Quote  Post ReplyReply Direct Link To This Post Posted: 18 November 2013 at 19:10
Hope you get it sorted, it's not good this sort of thing, we have enough to do anyway to keep the yacht going. Glad to hear you armed getting support from the dealer.

so is your boat in the lakes of Switzerland or on the coast somewhere?
385 ubulukutu sail number GBR 3350L in Turkey and Greece with Mark and Catherine
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MisterM Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2014 at 13:13
We had the same issue on our 385, which is in the Netherlands, see pictures below.

Our dealer asked the yard, who answered that this was not a guarantee issue, as it could be caused by many factors, for instance the harbour of the boat. Such nonsense I have not heard before.

Hanse offered to supply new sealant free of charge, but I had to pay for the labour of replacing it, some 500. It seems that Hanse really needs an integrated European approach to after sales.


Machiel.



H385 #208 "Van Bree" - light grey hull
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Admiral
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 19 May 2014 at 15:30

Well neither me nor my dealer got any reply from Hanse. According to the German Hanse Forum may boats are affected. It seems that boats in seawater are not affected, all reports indicate that the cheap crappy joint quality seal is only developping mildew in fresh water.

However I have noticed that the joints are no longer tacky. So I will try and use a bathroom silicone cleaner and see wether I can restore it a good workmanship look.
Frank
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JPB Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2021 at 14:26
Hello,

Just picking up this old thread.

We have the same issue on our H385 from 2015 here in The Netrherlands. 
This winter we'll remove the old deck/hull kit joint (also hull/transom joint) and replace it with a new fresh seal. 

Does anybody know the best product to be used? 
One of my friends reccommended Simson CA kit from Bostik. 

I have seen many Hanse yachts with the same issue and symply cannot believe the factories comment (above) that this a rare problem. 


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