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Post by mouse on Nov 22, 2019 18:46:31 GMT
Seems like there is no magic bullet to remove the black spots that appear on fibreglass! Had a result today though. Spray spots with Cillet bang Black mould remover, scrape spots with a plastic scraper. Compound and then polish. Got told years ago where boat maintenance is concerned, if it doesnβt hurt, you are not doing it properly! And the easy way is the correct way!
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Post by Deleted on Nov 22, 2019 18:50:44 GMT
I thought this was going to be a piracy thread.
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Post by Deleted on Nov 22, 2019 18:52:45 GMT
Not being a grp boater, forgive me, but is this like rust pitting on a steel boat ?
Rog
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Post by naughtyfox on Nov 22, 2019 18:54:50 GMT
Spot's spot is brown. He's probably rolled over in horse poo. As dogs do.
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Post by naughtyfox on Nov 22, 2019 18:56:42 GMT
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Post by Deleted on Nov 22, 2019 19:01:00 GMT
Not being a grp boater, forgive me, but is this like rust pitting on a steel boat ? Rog No it's a mould thing I believe.
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Post by Deleted on Nov 22, 2019 19:13:34 GMT
None of the above. mouse Vanguard spent 2 years under a Horse Chestnut tree at Littleport. The black shite is the fallout from said tree. No chance of any tree shite on his current mooring.
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Post by naughtyfox on Nov 22, 2019 19:16:14 GMT
Seems like there is no magic bullet to remove the black spots that appear on fibreglass! Yes there is! Your son!!
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Post by Deleted on Nov 22, 2019 19:19:13 GMT
[coughing]
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Post by mouse on Nov 22, 2019 19:25:45 GMT
Seems like there is no magic bullet to remove the black spots that appear on fibreglass! Yes there is! Your son!! Not this time, he is wrestling a Webasto into position!
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Post by Deleted on Nov 22, 2019 19:28:17 GMT
Not being a grp boater, forgive me, but is this like rust pitting on a steel boat ? Rog It's more like a lazy git allergic to a mop, bucket, and elbow grease π
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Post by Jim on Nov 23, 2019 10:24:20 GMT
Not being a grp boater, forgive me, but is this like rust pitting on a steel boat ? Rog It's more like a lazy git allergic to a mop, bucket, and elbow grease π With a little help you could get him to mop and polish at the same time.
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Post by freewind on Nov 24, 2019 20:22:52 GMT
Lots of tiny black spots could also be spider shite.
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Post by JohnV on Nov 25, 2019 7:14:35 GMT
Had a type of black algae/lichen spots on the roof of Shapfell when I bought her which re-appears if not washed regularly (as has been the last few years) The roof line is textured to form a non slip surface and it grows in the valleys. Bugger to get clean. Also found cillit bang and a good stiff scrubbing brush the only way to get it clean .... spent the best part of a day early this year having a go at it Bet when I see it next month it will be back again
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Post by Deleted on Nov 25, 2019 8:05:31 GMT
Whatβs inside Cillit Bang Power Cleaner?
Water, Sulfamic acid, Phosphoric acid, C9-11 pareth-6.
Sulfamic acid (chemical formula HSO2NH2)
Included in Cillit Bang because itβs good at cleaning metals and dissolving limescale. Sulfamic acid is used on a large scale by industry for these same reasons, but more importantly it is involved in manufacturing dyes and pharmaceuticals such as antibiotics and anti-cancer drugs. Sulfamic acid is also found in household products such as toilet cleaners.
Phosphoric acid (chemical formula H3PO4, food additive E338)
Phosphoric acid is found in fertilisers and water softeners, and is particularly useful at cleaning metals -- it is widely used as an industrial metal cleaner. This can be seen in some Cillit Bang ads, in which an old coin is rendered shiny.
It can also be bought as a DIY product, generally in the form of a gel, which can be used to remove rust. Phosphoric acid is generally regarded as one of the safest acids for use in regulating pH in manufactured items; so much so itβs even used in skin-care products.
C9-11 Pareth-6
A powerful surfactant thatβs safe enough to be used in skin-care products. This is the ingredient in Cillit Bang that removes grease and grime. C9-11 pareth-6 is even strong enough to remove the sticky traffic grime from cars and lorries.
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Having read all of that it seems there is no smoking gun...damn.
Sulfamic acid and phosphoric acid are easily obtained through Ebay.
C9-11 Pareth 6 can be bought through online suppliers. But with regard to the last sentence of the description of its properties, it might be worth trying Traffic Film Remover.
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