Latex paint is acrylic paint mixed with a binding agent that completely covers the surface staying with it no matter what.
What paint do you use on metal doors.
Then apply 2 coats of the primer letting it dry after each coat.
If you re using a dark color to paint your door use the grey glidden primer formula or have the paint store add grey to the white glidden formula.
Use an angled brush to paint any recessed panel areas let dry.
Paint the door with at least two coats of exterior satin or semi gloss paint following the same process you did for the primer and being sure to leave the recommended amount of drying time between.
Prime roll on one coat of glidden primer on the flat surfaces of the door.
When painting metal always use exterior latex paint.
To paint a steel door you ll need exterior paint and an oil based primer designed specifically for metal.