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Post by ohana on Feb 8, 2020 21:30:04 GMT
My jeanneau 439 built in 2012 has (well, had) a 200mm or so high glass sink splash back panel behind the sink. Arrived at the boat today to find it had completely shattered, with bits all over the place and a lot of tiny glass shards. It was obviously a toughened glass construction, but no sign of what had caused this. Nothing could have impacted it, and it has not been particularly cold since I was last on the boat only a week ago. Just very glad I was not there when it shattered.........
Has anyone else had this happen? Or am I just unlucky?
Thinking that a replacement in a plastic material might be wise.
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Post by sitara on Feb 9, 2020 0:07:50 GMT
Hi Ohana, This is a reasonably common event, you are not the only one. There are quite a few threads that mention this but from memory no one has a definite answer as to the cause. My SO36i, also 2012, did not have a splash back so I had one made out of 10 mm acrylic sheet (Perspex). The plastics supplier cut it to my template and polished the edges. If you use acrylic be careful drilling it as it can easily melt and then set trapping the drill bit, go slow. I did a few practice holes on some scrap.
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Post by Don Reaves on Feb 9, 2020 0:57:08 GMT
I have kept the splash back slightly loose on my SO 35 ever since this type of problem was first reported. The only thing that makes any sense to me is that the mounting must have been applying tension, which over time resulted in breaking the glass.
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Post by jy51 on Feb 9, 2020 10:37:44 GMT
Correct me if I'm wrong but I think Jeanneau have stopped using these glass splash back panels, I did ask the question for my Yachts 51, which is crying out for a splash back, but the only response was, they don't do splash backs anymore.
Maybe the problem is the change in temperature range, causing the glass to contract and expand, if so the answer would be to set the glass in a flexible sealant to allow for this movement.
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Post by ohana on Feb 9, 2020 15:50:13 GMT
Thanks all, I also posted in the YBW forum, and got similar answers. Sounds like these Glass panels have an occasional tendency to let go without warning. I found pieces as far away as the chart table and and the aft cabin, and there is a huge amount of tiny glass slithers to hoover up. Fortunately the boat is empty for the winter, all cushions and soft furnishings removed, otherwise the cleanup would be horrendous.
My preference at the moment is to replace it with a plastic, say an acrylic. Going to make enquiries this week.
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Post by ianqv on Feb 26, 2020 12:10:58 GMT
As mentioned above... Don is exactly right. Leave the securing mounts slightly loose otherwise the glass will shatter.
Two reasons... 1/ Temperature - expansion and contraction of the glass 2/ V Slight movement whilst sailing
You also get the same thing if you over tighten the glass in your Eno oven/Grill.
Regards
Ian
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Post by zaphod on Feb 26, 2020 21:11:59 GMT
I wonder how common it is for the glass backsplashes to explode. They used them for many years, so it couldn't have been too big a problem.
I really like the look of the glass backsplash. I think if mine ever broke I would look into getting a new one custom made. Perhaps even custom etching of some kind of graphic.
Now that I think about it, I wonder what it would cost to get some artwork etched onto mine!
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Post by rxc on Feb 26, 2020 21:40:24 GMT
I think that is not necessarily applied stress. My uncle had a tempered glass shower panel in his bathroom disintegrate one day. It was just hanging from the supporting rack - no binding stress, no temperature stress, nothing. They were sitting in the living room and just heard a big bang, and there was just a pile of glass fragments.
I have read that tempered glass just happens to do this occasionally. Maybe the glass manufacturers know why, but they aren't telling. Go look up "spontaneous glass breakage" for a discussion
Maybe someone should volunteer to make a template and be the keeper of the template for everyone who has this happen.
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Post by ohana on Feb 26, 2020 22:25:37 GMT
I think that is not necessarily applied stress. My uncle had a tempered glass shower panel in his bathroom disintegrate one day. It was just hanging from the supporting rack - no binding stress, no temperature stress, nothing. They were sitting in the living room and just heard a big bang, and there was just a pile of glass fragments. I have read that tempered glass just happens to do this occasionally. Maybe the glass manufacturers know why, but they aren't telling. Go look up "spontaneous glass breakage" for a discussion Maybe someone should volunteer to make a template and be the keeper of the template for everyone who has this happen. I would agree with this. The brackets holding the glass panel were slightly loose. Moreover, the panel had completely shattered, there was no part of it left intact. New acrylic one now ordered. I guessed the overall size from on-line photos of other 439s and carefully measured the hole centres, drew up a dimensioned sketch. Prices varied wildly, you need to find a supplier/fabricator who uses that material commonly, otherwise people will include for a whole 2m x 1m sheet. One quote was £380! Ordered one for £66 in the end, it is 10mm grey tinted acrylic, with radius corners and profiled cut edges. Should be fine, will report back when it is fitted.
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Post by NZL50505 on Feb 27, 2020 0:04:48 GMT
With 2 young kids on board I’m especially concerned about the risk of ours letting go one day so I’m considering replacing it with a piece of clear acrylic. And might keep the glass to remount it (or at least offer it) to the next owner of our 42DS.
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ventotene
New Member
Posts: 6
Jeanneau Model: Sun Odiseey 439
Yacht Name: NEKYA
Home Port: Masnou
Country: España
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Post by ventotene on Feb 29, 2020 20:20:10 GMT
Tengo el mismo cristal desde el 2008 y nunca me ocurrió. Si no ocurre en los primeros años o cambios de temperatura fuertes yo no me preocuparía
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Post by Don Reaves on Feb 29, 2020 23:57:16 GMT
Tengo el mismo cristal desde el 2008 y nunca me ocurrió. Si no ocurre en los primeros años o cambios de temperatura fuertes yo no me preocuparía TRANSLATION: I have the same crystal since 2008 and it never happened to me. If it does not happen in the first years or strong temperature changes I would not worry.
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Post by ohana on Mar 1, 2020 15:52:03 GMT
Not sure I agree - mine was 8 years old, minimal temp change over the week the glass panel shattered (temp around 5 degrees +/- 2 degrees or so)
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Post by rc sail on Mar 2, 2020 18:03:06 GMT
Another reported common issue with our aging Jenneaus is the adhesive holding the head mirror loses grip after a number of years. Owners have come a board to find the head mirror on the floor and shattered. On my 07 39ds, which was purchased new, I was brushing my teeth one morning and the mirror came loose into my hands. This was about 6 years of ownership. I added a bottom j-channel and plastic top holders to reattach the mirror.
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Post by John on Mar 2, 2020 19:50:58 GMT
As we are discussing glass .
Our 2007 Jeanneau has had the inside oven door glass shatter about 7 years ago , it was recommended not to tighten the inside holding screw to much , the glass has not broken since .
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Post by ohana on Mar 15, 2020 14:40:05 GMT
The new splash back panel now in place. It is acrylic, and looks exactly like the old glass one, so all good. Being acrylic, it will be less scratch resistant than the glass, but careful cleaning should minimise this.
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Post by zaphod on Mar 16, 2020 1:44:11 GMT
With 2 young kids on board I’m especially concerned about the risk of ours letting go one day so I’m considering replacing it with a piece of clear acrylic. And might keep the glass to remount it (or at least offer it) to the next owner of our 42DS. I think maybe you are worrying too much. If it does happen to "let go", tempered glass just shatters into tiny cubes of glass. It doesn't explode with any force or send pieces flying in all directions.
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Post by ohana on Mar 16, 2020 8:33:45 GMT
With 2 young kids on board I’m especially concerned about the risk of ours letting go one day so I’m considering replacing it with a piece of clear acrylic. And might keep the glass to remount it (or at least offer it) to the next owner of our 42DS. I think maybe you are worrying too much. If it does happen to "let go", tempered glass just shatters into tiny cubes of glass. It doesn't explode with any force or send pieces flying in all directions. That is absolutely not my experience. As mentioned in previous post, when mine shattered, around 50% was sent flying. I found pieces all over the main saloon, some beyond the chart table on the port side, and some in the heads and aft cabins. Ie a radius of around say 3 metres. Most were cubes as you say but also a large number of small sharp fragments. Some of these smaller fragments were even slightly embedded into the vertical galley cupboard doors.
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Post by achosenman on Mar 16, 2020 9:46:46 GMT
I had mine shatter when the previous owner had the boat shipped to the UK. They ordered a new one and installed it prior to my purchase.
I removed the glass to check the installation. I found one of the mounting bolts impinging on the glass where it wasn't aligned properly before tightening. All I did was install rubber grommets between the bolts and glass in the pre drilled holes, and ensured everything was square and not touching the glass before tightening the bolts.
So far so good, no issues.
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Post by NZL50505 on Mar 16, 2020 10:37:44 GMT
Yes I think I’ve heard enough to treat it as a serious risk so I’ll admit to the ‘to do’ list right after I’ve got the water-maker installation sorted...
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Post by ForGrinsToo on Mar 16, 2020 22:00:32 GMT
It would be helpful to know, I think, what are the range of sizes being used as glass backsplashes. I think I will pull ours out at launch (two months out) and have an acrylic replacement fabricated. It would be really sweet if there are just a couple of sizes, and we could share dimensional drawings. There are plenty of things that can put strain into glass, like a good, hard bump, which strain can only be released if the glass is heated to annealing temperature. For borosilicate (aka Pyrex), that is 500 C for 30 to 60 min depending on the thickness. Very few of us have access to an oven that is capable of that.
Geoff
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Post by ohana on Mar 16, 2020 22:56:16 GMT
I’m happy to share the drawing I made for my replacement but some dimensions were guesses as I had little to work on! Key dimensions were the spacing between the brackets and the spacing between the pair of threaded bosses on each bracket. The outside dimensions of the panel were guessed from photos I could find online, but weren’t really critical.
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Post by Tafika II on Mar 17, 2020 14:49:37 GMT
On the odd chance of the backsplash breaking as reported, we removed our backsplash and made a tracing of it on paper so if it does shatter, we can have an acrylic one made. You can purchase flat acrylic sheet with an abrasive hard coating (more $$$s) so you don't have to worry about scratches. I hope this paper template stays in my files and I never has to be used!
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Post by zaphod on Mar 19, 2020 0:43:08 GMT
You could also get some clear adhesive window film and coat the glass with it. Then it will act like safety glass if it breaks!
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Post by NZL50505 on Mar 20, 2020 1:43:22 GMT
You could also get some clear adhesive window film and coat the glass with it. Then it will act like safety glass if it breaks! That’s a v good idea...
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