Zinc-Rich Primer

Good afternoon, all,

I have a rather tired half-full tin of Galvefroid zinc rich primer and a metal shed with a rusty roof.

I'm posting here in the hope that our numbers include a paint chemist or two who can advise me about this primer.

It has gone rather hard in the tin over the years since I last used it. Will it have cured irretrievably or might I be able to revive it by adding the right thinners and some elbow grease?

I'd much rather use it than scrap it. I'm fairly confident that white spirit (aka turps substitute) isn't the right thinners. I do have some Hammerite thinners, might that do?

I'm asking here in advance rather than proceeding on a 'suck it and see' basis - I fear that trying the wrong stuff might be irreversible!

Best regards,

Swarf, Mostly!

I have some like that myself; The Datasheet Here, suggests Naptha
https://www.promain.co.uk/fosroc-galvafroid-thinner.html

Bill

We used ‘Genklene’ when I was at ICI, 1.1.1. Trichloroethane commonly known as, if you can still get it….

Experiment with a spoonful in a baked bean tin perhaps?

I thinned some Galvafroid last year for an outside job with Zylene from Crosbie Coatings. Took a lot of mixing by hand but it applied ok and has stood up to the weather fine and I have still not overcoated it.

regards

Zylene is almost certain to be the aromatic hydrocarbon used. Look up the Safety Data Sheet for Galvafroid, 30% aromatic in the correct R group numbering. Just difficult to stir the semi hardened paint!!