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Hatch leak

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    Posted: 10 Jan 15 at 5:38pm
I have a leaky hatch on my Flying Fifteen. I got a new rubber seal (Allen) and in my innocence thought that simply popping that on would fix it, but it is still letting a good deal of water into the side tank.

I've noticed that the old seal was originally stuck in place with a white compound, and I think that the uneven surface where the old rubber had to be torn away might be the cause of the problem. So I'm going to scrape out the old gunk and apply a new sealant. This isn't a big job: it's just that its trial-and-error nature and having to wait for things to dry out in between is a bit of a pain in the ass.

The old sealant is white, but I don't know if it's just builders silicon or something more high performance for marine purposes. Any suggestions very welcome!


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Post Options Post Options   Quote scotsfinn Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jan 15 at 5:57pm
Seriously - buy a new hatch - the are not that expensive
http://www.marathonleisure.co.uk/product.php?xProd=228152
just get the right size and it should fit straight in with some sealant around the underside of the outer ring and some s/s screws

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www.blueseaconsultingllp.com
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jan 15 at 6:35pm
I know its obvious, but check the fastenings very carefully. I've seen RS boats where some of the alloy rivets holding on the hatch had rotted, and so hatch seal and all was just lifting clear of the hull. I've never really bothered to seal the rubber seals (!) but you could try some vaseline or something as an experiment to see if it helps.

Edited by JimC - 10 Jan 15 at 6:37pm
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Post Options Post Options   Quote Wobble Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jan 15 at 6:50pm
No particular objection to buying a new hatch, but the one that's on it looks fine. 
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Post Options Post Options   Quote Wobble Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jan 15 at 6:53pm
Originally posted by JimC

I know its obvious, but check the fastenings very carefully. I've seen RS boats where some of the alloy rivets holding on the hatch had rotted, and so hatch seal and all was just lifting clear of the hull. I've never really bothered to seal the rubber seals (!) but you could try some vaseline or something as an experiment to see if it helps.
I think the hatch is pretty fast (with self-tappers) but worth taking a closer look. 
I agree that it seems odd to have sealant on seals, but the sealant was put on by the original builder (Ovington) or else by the previous owner, who also knew his stuff. 
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jan 15 at 7:52pm
Originally posted by Wobble

but the sealant was put on by the original builder (Ovington) or else by the previous owner, who also knew his stuff. 

I known seals glued on not for waterproofing, but to ensure they stay there...
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Post Options Post Options   Quote Wobble Quote  Post ReplyReply Direct Link To This Post Posted: 21 Jan 15 at 6:31pm
Thanks for the tips guys. Will take it all off, I think, and try sealing again. 
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 21 Jan 15 at 6:57pm
Of course the other possibility is that its not getting in through the hatch but somewhere else...
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Post Options Post Options   Quote Wobble Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jan 15 at 12:33pm
I'm pretty confident it's the hatch. I took off the original seal when there was a small intake, due to its age. Putting on the new seal, without addressing the join, means it's taking in more!
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