Anti foul - thinning down

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tarik

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I want put on an extra layer of a/f onto the bilge keels. I haven't got quite enough left over, I don't want to buy a new tin, what can I use to thin it out a bit without neutralising it?

As always thanks for all replies.



David
 
I'm afraid you'll have to contact Jesus to ensure you obtain more antifouling than you have in the tin (cf The parable of the loaves and fishes)
 
tarik said:
I want put on an extra layer of a/f onto the bilge keels. I haven't got quite enough left over, I don't want to buy a new tin, what can I use to thin it out a bit without neutralising it?

As always thanks for all replies.



David
Click to expand...

The recommended antifouling thinner for the product you are using.

You have not said what that is!
 
I thinned my 2nd coat this year by about 5%. Made a huge difference to the way it went on.
Use what's recommended on the can for thinning it and don't thin it too much.
 
tarik said:
Thanks Bill, that's what I had in mind.


D
Click to expand...

You still have not said what antifouling you are using .

its impossible for anyone to give you any sound valid advice without that knowledge other than to recommend that you use the correct thinner.

White spirit might be a better choice than turps substitute but both are predominantly mixtures of aliphatic hydrocarbons whereas most of the common, popular antifoulings are based on aromatic hydrocarbon solvents.

Turps sub/ mineral turpentine may be completely unsuitable or it may be Ok .... who knows ?
 
You could always do a quick test on a very small sample. If the white spirit is incompatible, the base resin in the A/F will be thrown out of solution. i.e it will become stringy. If it seems OK after thorough stirring, paint it on and see how it dries. If all is well repeat with a larger sample.
My guess would be that it will precipitate but you never know.
 
a/f

VicS said:
You still have not said what antifouling you are using .

its impossible for anyone to give you any sound valid advice without that knowledge other than to recommend that you use the correct thinner.

White spirit might be a better choice than turps substitute but both are predominantly mixtures of aliphatic hydrocarbons whereas most of the common, popular antifoulings are based on aromatic hydrocarbon solvents.

Turps sub/ mineral turpentine may be completely unsuitable or it may be Ok .... who knows ?
Click to expand...



Sorry Vic,

I have about 1/3 tin of Jotun left. I don't want to spend out money on Jotun thinners that I might not use again. I have a relatively small area left to touch up. Am thinking of taking Oldwills advice to mix in some white spirit.

best wishes,


David
 
tarik said:
Sorry Vic,

I have about 1/3 tin of Jotun left. I don't want to spend out money on Jotun thinners that I might not use again. I have a relatively small area left to touch up. Am thinking of taking Oldwills advice to mix in some white spirit.

best wishes,


David
Click to expand...

If it's Seaforce, thinners are Xylene based. Not sure what you would buy in the UK, over here it's "synthetic thinners".
 
Jotun Thinner no7 (if that is the one for the particular Jotun antifouling you are using) is mostly Xylene ( dimethylbenzene) with some ethyl benzene.

You dont say which Jotun antifouling you are using but all the ones I have checked on use thinners No7 and are themselves based on a solvent mixture which is aromatic rather than aliphatic.

You can but try a little white spirit with a small sample. If it seems Ok all well and good but dont use it without testing a little first.


White spirit mixes OK with International antifouling thinner which is similar.

My guess is that it will be Ok but may take a little longer to dry.
 
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