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Old 04 May 2009, 18:06   #1
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Hull Getting Discoloured

Hi, I have a question...

I keep my rib out of the water but for the past 2 or 3 weekends I have put the boat in the water on Friday and then taken it out on the Monday. I have noticed when bringing it out tonight that the bright white hull has started to yellow in places, what is the best way to get rid of this, Hopefully if I can get the yellowing out would polishing the hull help for future? Thanks
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Old 04 May 2009, 18:52   #2
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What you need is oxalic acid.

http://www.mistral.ie/details.php?co...FcEUzAodmHTz9g

This has to be cheaper than all the specialist marine proudcts that have fancy names!!!

http://cgi.ebay.co.uk/200G-Oxalic-Ac...3%3A1|294%3A24

http://cgi.ebay.co.uk/1KG-Oxalic-Aci...3%3A1|294%3A24

Tha last one is probably the best to buy.
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Old 04 May 2009, 20:56   #3
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On the basis of monkeys typing Shakespeare, Codders is spot on this time: oxalyc acid is exactly what you need.

I'm not sure about the products he mentions but as proprietory brands go, you can't do better than: Aqua Marine Y10 FIBREGLASS STAIN REMOVER.

I've just used it on my boat and the verdict from Mrs A was that "it looks like new".

The application is dead easy: paint on with a paint brush and rinse off with plenty of plain water. White hull results with no physical effort.

Harder bit is then polishing it: 3M is fine but strong arms (or access to electricity and a rotary drill with polisher) are essential. Two weeks later my arms still feel it: hey ho! Such is becoming 50!
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Old 05 May 2009, 09:17   #4
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The many and varied uses of T-cut

If it is only light/surface discoloration you may want to try ordanary T-Cut first,which you can do by hand, and it may help if you wax it to help seal it,and make it easier to remove next time...worth a try anyway!
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Old 05 May 2009, 10:00   #5
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Quote:
Originally Posted by Maximus View Post
If it is only light/surface discoloration you may want to try ordanary T-Cut first,which you can do by hand, and it may help if you wax it to help seal it,and make it easier to remove next time...worth a try anyway!
That sounds like a second hand car dealers trick
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Old 05 May 2009, 12:23   #6
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Quote:
Originally Posted by bedajim View Post
That sounds like a second hand car dealers trick
I'd rather say 'High-tec specialised automotive procedure'!...Be buggered without it though!!
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