Osmosis in a Heard 28

Leslie Aldous
Leslie Aldous's picture
Joined: 04 Feb 2016

Osmosis

I'm really interested in buying a Heard 28 and I've got my eye on a 25yr old boat. I've read a few articles on the subject of osmosis and recognise that it takes place in all GRP hulls to some extent. I wondered if anyone who owns a Heard has any advice to offer- should I be concerned or should the heavy lay-up of the hull make this a negligible concern?

Les

Aeolus FWB28
Aeolus's picture
Joined: 26 Aug 2006

Have put photos of Classic Boat article in the Gallery.

Leslie I have sent you a PM.

Leslie Aldous
Leslie Aldous's picture
Joined: 04 Feb 2016

I'd like to thank all those people who replied. I feel reassured. I've now looked at the boat in question and hope I can reach an agreement on price. If I do buy it I know that I'll have other questions to ask. Once again, thank-you!

bill payne
joy full sailer's picture
Joined: 16 Feb 2016

I have a 28 that was epoxy treated from new and then when I had her copper coated was sanded back and done again. She has since been copper coated again this winter. She will be for sale soon for the right price as I need to move to something a bit easier to handle . My wife is getting a bit nervous about me hanging on with one hand and a toe while  reefing at the mast step and I still want to go sailing . Looking for something lond keeled about 30 foot if anyone fancies a swop... Cheers Bill

Colin Stroud
Colin Stroud's picture
Joined: 25 Aug 2006

Hello Leslie. I have yet to hear of a single Heard boat with osmosis. My own research and experience of osmosis (in a previous boat) is that if a hull has survived a significant number of years (more than 15?) it will probably never get osmosis. Epoxy coated hulls are very imune. Water vapour will always pass through the normally used polyester resin (assuming there is no epoxy coating to significantly slow this down) but osmosis will only start if there are voids and/or impurities in the resin. The thickness of the hull is not a factor. If the GRP is laid up well in good working conditions then you should not get osmosis..

Good luck with your search!

Colin

www.solocoastalsailing.co.uk

Henrik Nor-Hansen
Bika's picture
Joined: 27 Oct 2013

All hull materials deteriorates one way or the other. We once took care of osmosis on a Contessa 26, and did the full job. Later we realized it would have been good enough to just drill out the blisters and treat them locally. You shouldn't let osmosis stop you. Besides, it's not so much of a problem in UK, where the water is rather cold. We go the problem in the Caribbean.

Aeolus FWB28
Aeolus's picture
Joined: 26 Aug 2006

Hello Leslie and welcome. I have moved your request to this section.

I don't know of any osmosis problems, the boats were epoxied. Martin didn't want any boats coming back to him with that problem.

Which boat are you looking at?

Regards, Steve


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