I've rendered the external walls with a (2 coat) sand-cement mix. I'd like to paint it to get a smooth finish. The walls are a bit rough and not completely flat in some places. Do I need to apply a top coat (of what?) to get it flat and smooth it before painting, or would it be better to just sand it down and then paint over it with smooth masonary paint?
There are few cracks here and there, whats the best way to cover/seal them before painting?
There are few cracks here and there, whats the best way to cover/seal them before painting?