Suitable key for rendering?

Hi guys, I've had someone build be a concrete wall by forming, he used clippings mixed in which is fine but obviously it now doesn't really look smooth on top (haven't taken the sides off yet to see the side) but i want it to look more like a smooth rendered wall, would it be rough enough to render straight into?

If so do I still need to do scratch and top coat?

If it's not a suitable key, I have some leftover mesh from a previous job someone did, could I just put this over the wall as a key? (If so do I just please it on it and render it in or do I have to secure the mesh to the wall in some way??


Thanks for all the help guys hope I've managed to get my questions across properly

(It's not the biggest wall anyway less than half a metre)

I see he doesn't own a float, or even a broom.

It looks fairly wet, so the sides will probably come out with the grain of the wood embossed on them. Rendering would be a lot of work for nothing.

Floating the top would of made it smoother would it? Does the broom give an effect or do you just mean to clean up after him haha, he's coming back tomorrow to finish the bottom part...

The side defo won't be smooth then will have the wood grain pattern in it?

He did have a float with him, just obviously didn't use it!

Could I ask why you feel rendering to be a lot of work for nothing, any other method to achieve a smooth look?

A float can be used to give a fairly flat and smooth finish. A broom can be used to add a neat textured, non-slip finish. Too late now.

The side of your slab will look quite reasonable when you strike the shuttering. If there are any bad ridges you can rub them with a flat bit of brick or concrete, preferably while your slab is new as it will harden more over time.

Good pointers above. is that treated wood as it will rot eventually.

Quick go throw some sugared water on it and then you can expose the aggregate.