international number 9 thinners ,help please

[Orwell boy]

Removing some paint from the hull of my boat , top coat is international Toplac and comes off with hot pressure washer and turbo lance ,leaving a grey primer ,maybe one coat maybe two , however wont move with pressure washer ,or have tried nitromors (yellow tin ) to no joy ,,,,,,, international number 9 thinners softens the grey and then with a lot of rubbing and cloth well wet , starts to breakdown and comes off a treat .
so question is at £18 a litre anybody know similar to number 9 thinners without the over inflated boating price ?? thanks]

[beamishken]

Originally Posted by Orwell boy

Removing some paint from the hull of my boat , top coat is international Toplac and comes off with hot pressure washer and turbo lance ,leaving a grey primer ,maybe one coat maybe two , however wont move with pressure washer ,or have tried nitromors (yellow tin ) to no joy ,,,,,,, international number 9 thinners softens the grey and then with a lot of rubbing and cloth well wet , starts to breakdown and comes off a treat .
so question is at £18 a litre anybody know similar to number 9 thinners without the over inflated boating price ?? thanks]

Have you tried a standard cellulose thinners from a car paints supplier? It will probably do the same think for £12 ish for 5 ltrs or £30 ish for 20ltr drum
I've cleaned antifoul and the primer off a few hulls with it. Keep the rags nice and wet and change them once saturated with paint

[TimB]

Take it cellulose doesn't harm the gel coat

[beamishken]

Originally Posted by TimB

Take it cellulose doesn't harm the gel coat

No its fine no harm done

[TimB]

shall give it a try, thanks

[Fenlander]

And I have no idea but what about acetone... at least it's only £18 for 5l delivered. Could test the principle with some nail varnish remover??

I always have acetone in the workshop and it's removed so many paints, sealants and glues that have been troublesome with other solvents.

[Orwell boy]

Originally Posted by Fenlander

And I have no idea but what about acetone... at least it's only £18 for 5l delivered. Could test the principle with some nail varnish remover??

I always have acetone in the workshop and it's removed so many paints, sealants and glues that have been troublesome with other solvents.

good tipon try the nail varnish remover but no softening with that .

[Orwell boy]

Originally Posted by beamishken

Have you tried a standard cellulose thinners from a car paints supplier? It will probably do the same think for £12 ish for 5 ltrs or £30 ish for 20ltr drum
I've cleaned antifoul and the primer off a few hulls with it. Keep the rags nice and wet and change them once saturated with paint

thanks for this tip . had tried a few more general thinners but athough a little softening not really good enough ,however you reminded me of a can of machine enamel gun thinners i had and sure enough ,not as powerful as the number 9 but doable with a grey rubbing pad
Don,t think cellulose is avail any more however maybe its just named a little different , my local motor shop have tetroseal in 5 litres for a tenner ish so will try that as well and report back when i have purchased
thankyou https://www.ebay.co.uk/itm/Tetrosyl-...0AAOSwym1crcPm

[beamishken]

Yep thats what I had in mind

[paintman]

Standard thinners as in your link.
Removes lots of stuff from various things.
Need to be a little careful on a painted or plastic surface as it can soften paint & cause considerable damage to some plastics.
As ever, try on an inconspicuous area first.

If you want a 25 litre drum try a local motor factor.

[Orwell boy]

Tried the tetroseal for a while yesterday and works ok ,still not a patch on the international no 9 ,i wonder whats in that stuff ? maybe https://www.ebay.co.uk/itm/Two-Pack-...e/173016878151

[gpsguru]

Originally Posted by Orwell boy

Removing some paint from the hull of my boat , top coat is international Toplac and comes off with hot pressure washer and turbo lance ,leaving a grey primer ,maybe one coat maybe two , however wont move with pressure washer ,or have tried nitromors (yellow tin ) to no joy ,,,,,,, international number 9 thinners softens the grey and then with a lot of rubbing and cloth well wet , starts to breakdown and comes off a treat .
so question is at £18 a litre anybody know similar to number 9 thinners without the over inflated boating price ?? thanks]

International Thinners No9 is a Polyurethane Thinner (PU) and therefore probably contains one or more of the following solvents, isobutanol, xylene, ethylene acetate and acetone.


There are plenty of PU thinners on the market, you can get some from your local car body supplies shop, which is probably also made by AkzoNobel. However, PU thinner is not a cheap product, but might be less money outside of the marine environment !

[paintman]

MSDS for No9
https://s3-eu-west-1.amazonaws.com/a...20170914095620

[Orwell boy]

All sorted now thanks to all ,tetroseal and the grey very fine rubbing pads won the day ,used 15 litres ish in the end at only £11 for five litres ,thanks for help everybody ,since then i know have every g rating farcela they do i think ,hull is superb ,well chuffed .

[warder54]

Cellulose thinners for sale in Lidl at the moment £2.49 a litre, great stuff - even cleans Hammerite brushes with ease!