Best approach for salt water environment: 1. remove heavy rust with sand paper, wire wheel, etc. 2. Clean with acetone or mineral spirits 3. wipe with alcohol 4 etch metal with phosphoric acid 5. wipe with alcohol 6. metal primer (2 to 3 v. light coats until fully covered). If you need a smooth surface use 2 in 1 primer and sand until smooth 7. spray paint (2 to 3 v light coats until fully covered). I use rustoleum 2X 8. clear coat spray paint (2 to 3 light coats). I use rustoleum 2X This will hold up for several years at the shoreline.

thanks to the zinsser solutions to a lot off problem when comes to painting and decorating.

Great video. I would normally use Penetrol in that situation but I can see the advantage to using the water based primer since it dries faster.Keep up the good work.

Great info. I have some galvanised railings that are just starting to rust at the welds. I was just going to give them a wipe down and use hammerite paint on them. Should I be using Kurust, then special paint primer and then the hammerite or am I OK with just Hammerite paint?

Nothing to address etching?