Hey, sorry if this is the wrong sub-forum to ask but I'm being commissioned to do some outdoor paintings and was wondering about a few things as I'm totally out of my element.

I've only ever used acrylics and oils so my first question would be what would work best on a painted concrete surface? The wall is a little over 5ft tall so something like spray paint might be too much and paint pens may be too small as far as covering the surface I'm assuming.

Also is there anything particualr I should use to seal it from the weather and fading?

Just the general process of preparation and all is all new to me too. Maybe gesso-ing the area I'll work in then painting in oil followed by a sealant would work? Hopefully so.