TimfromMersea
Well-Known Member
I know how to get it off (Yachticon Anti-Yellow works a treat) but is there any way to stop it getting on there in the first place?
Yellow-brown hull staining
- Thread starter TimfromMersea
- Start date
pvb
Well-Known Member
Not really; but you can help to slow its appearance by decent polish followed by decent wax.
Chalker
Well-Known Member
Buy powdered Oxalic Acid, mix a little in a bucket of water. Wash a small area (hull height x 1m), rinse off a few minutes later and its all clean.
Don't forget to use marigolds (rubber kitchen gloves).
Most of the hull cleaners use Oxalic acid and its much cheaper in powdered form as it goes a looonnng way.
Don't forget to use marigolds (rubber kitchen gloves).
Most of the hull cleaners use Oxalic acid and its much cheaper in powdered form as it goes a looonnng way.
pvb
Well-Known Member
Ah, but did you read his post?
Sans Bateau
Well-Known Member
Moving the boat to somewhere with less mud in the water should help. West country, Channel Islands, the Med?
pagoda
Well-Known Member
It seems more prevalent if you are in an "reduced salinity" - estuarine environment for a while - but as said the staining can be removed by a quick brush over with Oxalic acid solution. If you add some fairy liquid - it is less prone to running straight down. Remember to wash the waterline first - or you may get light marks on the antifoul where the Oxalic mix has run down. The stuff can be bought by the kilo for not a lot. (or you can pay a premium for ready mixed "deck brightener"). Wear gloves - don't let it get near eyes/ face/skin in that order.
Yngmar
Well-Known Member
I scrubbed it off with a stiff brush from the pontoon the other day, along with all the disgusting crap (literally) that floats around the marina. I did some half-assed polish/wax job last year, so maybe that's why it just came off with a good scrubbing.
Chalker
Well-Known Member
Yes but I could only make his own solution cheaper.
I guess dry sailing (launch, sail, lift-out) could solve the problem........
Champagne Murphy
Well-Known Member
Oxalic acid is terribly slow to dissolve. Prepare it the night before and use warm water. Add wallpaper paste when using so it sticks but wash it off before it dries! I know of no way to prevent it although a double layer of Po!is at the waterline seems to slow it.
2copplane
Well-Known Member
I find the most active boats suffer most so wear it as a badge of honour. I think sailing means more of the top sides are submerged and allow algae to get a grip. Wax polish helps but I'm pondering whether to try something like Boracol or Brintons as a preventative treatment.
macd
Well-Known Member
Horace
N/A
You lot should be ashamed of yourselves for polluting the environment......you get a boat supposedly for enjoying the wonderful natural environment & then add to it's destruction.Disgraceful! :disgust:
ghostlymoron
Well-Known Member
Hear, hear. There's enough chemical pollution in the sea as it is.
LadyInBed
Well-Known Member
so buy a brown hulled boat
William_H
Well-Known Member
I get that brown stain on the hull above the water line diminishing up higher. The water is not muddy and is full ocean type saline. I clean it after about 2 months in the water. I use a squeeze pump spray bottle and spray it while swimming around the boat. (mask and snorkel) I use a powder stain remover but I don't think it is oxalic acid which seems not so easily found in hardware shops any more. As for polishing/waxing the hull I fear the hull condition is a bit rough for that having been over painted a fair bit over its longlife. olewill
Len Ingalls
Well-Known Member
Tannins in water? http://www.marinehowto.com/
Yngmar
Well-Known Member
Must be all the tea-drinkers. Or rather, tea down the sink pourers.
Chalker
Well-Known Member
My powdered oxalic acid powder dissolved very easily.
Spi D
...
Oxalic acid is naturally found i rhubarbs, so no environmetal hazard in that.
If you want to avoid stains, antifouling, osmosis and seasickness leave in on the hard.
If you want to avoid stains, antifouling, osmosis and seasickness leave in on the hard.
johnalison
Well-Known Member
I agree with the Yachticon stuff, not necessarily better than others, but handy to use, though they no longer use the clever clip top sadly.
A friend with an old Nic32 was advised by the local GRP man to remove all the old wax with cellulose thinners and start again. He seemed to get less yellowing after that.
A friend with an old Nic32 was advised by the local GRP man to remove all the old wax with cellulose thinners and start again. He seemed to get less yellowing after that.