Painting external lintels

[Lincolnshire Ian]

Hi folks

We need to paint the steel lintels above our windows. My go-to for painting external metal would usually be hammerite, but I have been using this stuff for decades and thinking there could be a better alternative now. 

We are looking for a good finish, but just as importantly durability so that it doesn't need repainting too often. 

Thanks 

[Russell griffiths]

Why do you have a steel lintel on show, shouldn’t it have a trim over it. 

[Redbeard]

... or is it just the bottom flange of a 'box and tray'-type lintel?