Can i add thickness to a procedural mesh? In effect create an extrude command for it?

So I’ve been playing with procedural mesh components and my question is can i add thickness, like a shell or extrude modifier in 3dsmax. I can’t seem to find much on it. Alternatively could i use the procedural mesh in conjunction with the spline mesh component. I think you’d need to convert the procedural mesh to a static mesh for this though…

Any help very much appreciated as ever.

I can’t find this too. Anyway to extrude the mesh?