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Old 11 September 2018, 07:34   #1
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Challenging Aerotec floor repair.

While I've had the aerotec inflated in the garage to do the transom job I've noticed the left side floor panel loses some pressure over a day or two. Measured it at a 10% pressure loss per 12hrs.

Quick go over with leak detection fluid and I have found the problem. At the very start of the joining flap fusion (it's heat welded on these later ones) a very small sharp stone had become trapped and worked it's way into the material enough to leak.

Images of the flap, the bubbles and the tiny hole (a sort of grey dot on the image in the bit I've pulled back).

If this was in the middle of an area of floor very easy to repair. However...

Ideally I'd like to get a patch around 60mm dia on a HP floor leak. But this location is a pig and I reckon I'll have to Stanley knife the flap from the floor for a distance... patch and then attach the flap back with a reinforcing strip. But there's a problem with that if you see the reinforcing tape which also seems to be heat welded... but it is only PVC coated one side so part of my patch would be trying to stick to what I guess is woven fibreglass.... which I don't think would work.

Any thoughts appreciated before the Stanley knife comes out.
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Old 11 September 2018, 07:52   #2
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Hmm, I'd be reluctant to 'disassemble' more to treat a very small hole. I'd try the below and if not I'd probably live with it - too many times over the years I've dived in and made things worse - only now with age can I make myself hold back and learn from it!

I'd be looking at a chemical repair - ie a flexible two part epoxy, maybe try some PU (Sikaflex etc) or even a bit of plastic welding (with a solder iron) but this is risky. You need some of the material to practise on but it might work melting and dripping/welding into the hole.

One side of mine goes down slightly more quickly than the other but never enough to be an issue.



But definitely try a drop of some chemical/adhesive first.
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Old 11 September 2018, 08:25   #3
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A difficult one Fenlander as I have no experience with high pressure air floors.

However if it were mine.. as Max mentioned.. I would ram that small triangular space full of Sikaflex. The critics poo hoo'ed me repairing The Gurnard that way three years ago..Im sure you remember that thread.. anyhoo ..they were all wrong.. I have not looked at that repair since and it still hold pressure indefinitely. I have done hundreds of miles in the boat since and in some rough weather.

Perhaps a patch over the triangle mouth to ensure the Sikaflex stays in place once you test to see if it hold the air. Just a suggestion..but I know its not the professional way
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Old 11 September 2018, 08:35   #4
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To be honest I think I agree for this tiny leak a "chemical" solution from a tube may be best and leave the Stanley knife in the toolbox. The rate of leakage is so small it would only lose 5% of pressure over a typical day out... I'd not have noticed until next year's summer holiday when inflated for two weeks had I not carried out the transom job.

I wonder if Sikaflex is the best (292i?)... happy to buy an expensive tube of "miracle repair" type stuff if it exists.

The other option I guess would be to use proper 2-part PVC adhesive and glue the flap down as its own minute patch??
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Old 11 September 2018, 11:14   #5
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McNetts Aquaseal.

Put a dot of it on there.
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Old 11 September 2018, 11:30   #6
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Quote:
Originally Posted by office888 View Post
McNetts Aquaseal.

Put a dot of it on there.
That might be the same as 'Stormsure' we get in the UK? - I've got a few tubes in the fridge - useful stuff.

https://www.ebay.co.uk/sch/i.html?_o...msure&_sacat=0
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Old 11 September 2018, 12:38   #7
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I too have no High pressure floor experience.
But treating it as just a small hole is the first option as the others say. But I'd try to get the glue inside as well. Perhaps inject some with a needle injector and then on the top. A actual patch may not be needed. The pressure inside would push the inside glue against the air leak instead of the pressure pushing it off.
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Old 11 September 2018, 14:37   #8
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This guy seems confident of Stormsure…

Looking at instructions and videos it does seem Stormsure is the same as Aquaseal which isn't easily available in the UK.
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Old 11 September 2018, 15:02   #9
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You could use aquasure used on dry suits a clear liquid self levels work into the hole and form a large area under the flap weight it down so the flap becomes the patch stuck down with the aquasure.

Or as said inject a small amount of the internal sealing liquid with the for upside down creating an internal patch I know that does work.
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Old 11 September 2018, 15:06   #10
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when i was a teenager i had a 66 mini cooper with a leaky radiator ,i used to put an egg white in it !! never failed
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