I too question the overall effectiveness of Fertan. I recently acquired an old steel narrowboat and have stripped back with a Tercoo blaster and then Fertaned any remaining rust patches. After leaving to work for the advised time period then scrubbing off with water I find that many patches bloom up brahman orange with rust within a day or so (no rain). Somewhat disappointing. I think the best thing to do is strip back with poly strip abrasive discs and epoxy immediately. Although this is far from practical when painting a whole boat cabin
Hi, just seen your video, yes, interesting. I have been saying for a few years now that Fertan is the best rust converter out there, and I still believe that to be the case, but there is a specific way to use it. In reality, you never put any faith in overcoating heavily rusted steel, you always try to remove as much rust as you can by whatever means you can before coating it with anything. All rust converters have the same limitation, they only convert a few molecules deep and do not penetrate. Coating rusted steel with anything that excludes air and seals out moisture, which would literally be any non-water based paint, would have probably passed your test, the down side being that the rust will come back through the paint if left long enough due to the small amount of moisture and air trapped beneath the coat of paint. Look at examples like steel bridges and oil rigs, if there was a product that you could apply once and the rust was sorted for good, it would be worth billions! Although Fertan state that once applied the work piece can be safely left for months only applies to normal ambient conditions. Were you to wet it with anything containing water, it will fail. However, apply Fertan to steel with as much rust removed as possible, dry it thoroughly and overcoat with 2 good coats of epoxy primer, in my experience, it is the best you can do.
Thanks for your comment and taking the time to write a long and contructive one I'm always up for a good discussion. The reasion I conducted my test like this, is that I tried to push the products to their limits. I already made a second Video were I changed to a pure salt solution and retested the Fertan with some acrylic paints and I got really wierd behavior from it, which makes me question it's effectiveness. But it's still a widely used product so there must be something to it. I still need to get to the bottom if these issues I had.
@@klmindustries4812Thanks for taking time with the comment. I am currently using Fertan to stop de-rusted steel parts, mainly nuts and bolts, from flash rusting and it seems to work just fine. I am using a product from Bilt Hamber called De-OxC and it is fantastic. Works great and much cheaper than Evaporust, certainly here in the UK. Going back to the Fertan, they recommend just rinsing off the excess, but I find this leaves behind a layer which has not adhered to the metal and pulls off easily when overpainted. I tend to go over the treated surface with water and a grey scotch pad using light pressure. I then epoxy prime and paint and all seems to be good. It would be interesting to share your experiences with Fertan themselves and see what they have to say about it. I worked on cruise ships for 12 years, and when they re-finish a ship's hull in dry dock, they do not treat the rust with anything, it is just painted over, so relies on encapsulation of the existing rust. It's as though they know that doing anything else is just a waste of time and money, similarly with steel bridges.
@klmindustries4812 I don't think the product works regardless but the instructions say after applying fertan wait 24 hr then wash the surface with water and let it dry. Then you got to apply the epoxy primer.
Hallo Tom, Wie im Video erwähnt hab ich das Fertan 48h Einwirken lassen und dann abgewaschen "I treated everythig according to the Instructions." 4:50 Hab das abwaschen aus Flow Gründen nicht ins Video genommen.
![The Best Rust Converter !!! [Brunox Fertan ColorMatic]](/img/logo.svg){kind=logo}
