Black Tar Varnish

[joliette]

Anyone have any experience of using this product? I'm looking for something to protect strap steel floors and was wondering if anyone would recommend it. I've tried Hammerite and Galvafroid. Both of these were expensive and didn't last that long before they wanted a recoat, so I was wondering if a more traditional produce would be any better?

 

[Bobobolinsky]

Two pack epoxy VC tars are pretty good nowadays. Any galvanising products will not work well where constantly damp

 

[neil_s]

Black tar varnish is almost useless by comparison with modern paint systems. You would need to chip and re-paint every year.

Neil

 

[Bodach na mara]

I used to use it years ago. It is messy, slow to harden and bleeds through any paint put over it except emulsion, and that does not take on it anyway. It comes off on anything that touches it and if you get detergent or fuel in the bilge, it will disolve in that to some extent.

 

[Gordonmc]

The steel bearers for the engine in my boat had to be welded in-situ, so galvanising was not an option.
I was put onto a zic-rich paint called Zinga (Mr. Google will help). The best way of describing it is zinc in a sort of resin, but not requiring a catylist. When dry it looks like hot-dipped galvanised.
The Zinga will take an ordinary paint finish - I used smooth Hammerite.

 

[Bobobolinsky]

Hi Zinga is a strange product, it's not truly a paint. It's zinc dust in formaldehyde. When the coating is applied the formaldehyde evaporates, leaving the zinc dust to do what zinc dust does and corrode together to form a non homologous coating. The coating needs to "breathe", so is not really effective under other coatings. As a stand alone coating, it is quite effective, though obviously not to the extent of hot dip or thermal sprayed zinc. I used to work for the original importer

 

[Amulet]

I think what you want is "epoxy tar". Kings of Pin Mill did some of my wearing down galvanised fittings with it 10 years ago and it is still going strong. Never bought or applied it myself, so here ends the limit of my knowledge.

 

[panthablue]

Epoxy tar is good

 

[westernman]

Hi Zinga is a strange product, it's not truly a paint. It's zinc dust in formaldehyde. When the coating is applied the formaldehyde evaporates, leaving the zinc dust to do what zinc dust does and corrode together to form a non homologous coating. The coating needs to "breathe", so is not really effective under other coatings. As a stand alone coating, it is quite effective, though obviously not to the extent of hot dip or thermal sprayed zinc. I used to work for the original importer

Sounds like just what I need for treating my rusting galvanized protection strip around the rubbing strake on my boat.

Any idea on how to get some to France????

 

[Gordonmc]

Sounds like just what I need for treating my rusting galvanized protection strip around the rubbing strake on my boat.

Any idea on how to get some to France????

Its manufactured in Belgium: http://www.zinga.eu/en/distributors
One French distributor is http://www.peintracol.com but there may be others closer to you.