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Idiots guide to maintaining a GRP yacht... etc......

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farmer boy says:

You probably all know this stuff already but I found it very useful...

www.westsystem.com/ss/use-guides/

Why did I buy a 30 year old yacht???

I bet a boat 10 years old would need a lot of work anyway.... or am I kidding myself?

Has anyone used the West System... any thoughts?
6:32PM, 9 February 2011 PDT (permalink)

busy home [deleted] says:

Where do you need West System ?
None of us can afford to anyway!
103 months ago (permalink)

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Skykomish E29 says:

Modern boats will not last anywhere near as long as the build quality is so poor these days in order to keep costs down, Nobody could afford to build a boat to the same specification as an Achilles and sell it at a competitive price.
There is a lot to be said for Older boats
I have used West Epoxy and quite frankly can not see how they justify the cost, for what you need I would suggest using the one the other guys recommended in recent posts.
103 months ago (permalink)

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pjbharrison says:

I've used West system epoxy, fillers etc in the past. They are sensitive to temperature and moisture and are very difficult to sand.
What do you want to use them for?
103 months ago (permalink)

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farmer boy says:

Thanks guys... I was thinking about re-fitting all of the through deck fittings.. I have been told they are prone to leaks. I guess the plastic padding stuff will do the job of making the fittings more secure and helping to keep the inside dry?
103 months ago (permalink)

busy home [deleted] says:

No,, try silicone sealer. The bigest leak source is likely to be the horse,, the water run s down the lazerette and around it ,,, but its under heavy load and jerks all the time so a flexible sealer is a must,
The genoa car track on the side deck is next remove it and apply silicone
Also are your seat piano hinges secure .. if the pop rivets /bolts are worn
water get s in there,, Another IMPORTANT place is the lower forstay fitting ,water gets in either side runs down and rusts it away... look in the anchor locker with a torch and a long neck or mirror to check..
The windows leak on most boats ..thats a whole new chapter.
103 months ago (permalink)

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Skykomish E29 says:

I think that I mentioned elsewhere on one of your pictures I think the method for securing through deck fittings If you need further details I can maybe photograph what we have done, though it is a bit cold to show how to drill out the hole and treat with epoxy, as it needs a warm temperature to cure
Originally posted 103 months ago. (permalink)
Skykomish E29 edited this topic 103 months ago.

busy home [deleted] says:

Before you start to repair tis always best to locate a fault.
Chille Goskar Snow goose ,, had no holes to repair, in roof..
or any where,,, ?????
103 months ago (permalink)

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farmer boy says:

Thanks guys... I shall look for any obvious staining which indicates leaks and go from there...
I do need to fix the windows as well..... just bought the caustic soda and wallpaper paste... time for a bit of alchemy!
103 months ago (permalink)

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pjbharrison says:

Be careful. Remember to add soda to water not the other way around. Wear cloves and goggles.
I used Sikaflex under deck fitting. It may be hard to remover fittings again as its a bonding agent.

Did you find a book yet?
103 months ago (permalink)

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farmer boy says:

Laughing - boy did the bucket get hot!!!

It ended up just like nitromors... same consistency and look... its nasty stuff!!! Got some on my wrist - overalls too small - and it burns! Its on now and I shall wait till tomorrow.... then more scraping - yuk..
its a nasty messy job - not what I thought sailing was all about... but at least I will be confident that all is well with the boat when I eventually launch it.
The ropes are all green and slimy - do I throw them away or can they be shoved in the dishwasher?

oh yes - Silkaflex - there seem to be loads of different types.. which one for sealing the fittings?

Thanks again to you all... I am learning fast (ish!) and hopefully will soon stop hogging this site!

ps pjb... not found a book yet... probably will not bother now as all the information I need seems to be available here... it seems to be mainly getting to grips with the various fibreglass, gelcoat and paints the LOADS of dirty work! Can't wait to start putting the paint on...
103 months ago (permalink)

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pjbharrison says:

From Sika.com

www.sika.com/en/solutions_products/01/01a006/01a006sa02.html

Resistant to weathering and seawater, Sikaflex-291 is the perfect all-rounder: an all-purpose flexible marine sealant that bonds extremely well to all standard materials used in boat construction. Its outstanding elasticity ensures a durable, long-lasting seal alike all other Sikaflex Marine sealants and adhesives. Sikaflex-291 features 1-C, easy to apply, high elastomeric characteristics.
Sealing Applications:

* Chain plates
* Deck Fittings & Hardware
* Hatches
* Ports
* Etc.

Ebay £7.50 + £2.99 p&p
cgi.ebay.co.uk/NEW-SIKAFLEX-291-WHITE-MARINE-ADHESIVE-YAC...
Originally posted 103 months ago. (permalink)
pjbharrison edited this topic 103 months ago.

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blueachilles says:

Ropes can be washed in a washing machine (wait till your wife is out!) but put them into a pillow case or similar first and they won't get tangled.

But if they are old as well as green & slimy, it might be best to replace them - much nicer to use in your first seasons......
103 months ago (permalink)

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rothwell_neil says:

John

I will be near your place tomorrow afternoon about 3pm and if the kettle is still working it would be good to see where you are up to?
103 months ago (permalink)

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farmer boy says:

that's great - see you at 3.00 - seem to have just made a mess so far!
103 months ago (permalink)

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Tranquillity1 says:

Have a look at www.swift18.org/docs/GRP-REPAIR-MANUAL.pdf it's a useful guide to GRP repairs
103 months ago (permalink)

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Snow Goose Tim says:

I have used sika for all my deck fittings, and tested with pressure hose. generally use sika 291 for deck fittings. www.bluemoment.com/downloads/sikaflexmarinehandbook.pdf this is my bible when it comes to sika cause like you say there way too many! but be sure to select the right one! be aware if you opt for silicone the amonia in it ruins paint work. i have used west with a good dose of micro fibres to seal any unwanted deck holes where i have removed things brilliant stuff. however is expensive, i get it for free as i work in shipyard. if i had to pay i would probably look for a cheaper option!!
103 months ago (permalink)

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farmer boy says:

thanks - that was a really helpful link...
103 months ago (permalink)

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farmer boy says:

God bless caustic soda!! Wonderful stuff.... thanks for the advice - it worked a treat! Just left it on overnight and it nearly fell off! I used a power washer on it and it just washed off like mud... no scraping , no scratches and no sore shoulder... might just put on another coat to get rid of the tiny bits I missed...happy days!
103 months ago (permalink)

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Skykomish E29 says:

Found this article by Don Casey on bedding in deck fittings may be of interest www.boatus.com/boattech/casey/39.htm
103 months ago (permalink)

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