if it's good enough for the forth bridge

[xpress]

glass flake epoxy primer. not sure where a good source of this is, but this is what they've just used to pain the forth bridge.

the idea is that it won't need doing for a few decades now, totally encapsulating the structure in an impermeable sealed painted surface layer. sounds good. perhaps that's why the chassis of the t25 vans did so well, with seam sealer, (flexible pu, rubber).

looks like boatbuilder was right, he might be around in a few to add in his opinion.....

http://www.bbc.co.uk/news/uk-scotland-e ... e-14789036" onclick="window.open(this.href);return false;

[Hacksawbob]

http://www.leighspaints.com/en/techWhat ... Flake.aspx

interesting, I bet it wont last as long as they reckon though. They will sack the painters, save the money for a few years then have to replace sections where they 'missed a bit'

[boatbuilder]

Interesting..... the glass flake is probably to give the epoxy more strength, similar to using glass cloth with epoxy to encapsulate boats.
Thats the wonder of epoxy, its so versatile. By mixing different additives, it can be used for a lot of different applications.
Wouldn't like to bet on it holding up for 25 years though unless they totally disassembled the bridge, removed each rivet to treat the rust etc.
If they just painted over the rust, then it doesn't really matter how high tech the paint is....