Hi. Any advice on what option would be best to cover the wooden board cladding in the picture? Not sure what's behind it, if anything, definitely nothing too solid as it feels like just the width of the boards are between mine and my neighbour's side. They've got a smooth finish on their side whereas we've got the wooden cladding. Ideally we would like a smooth plastered wall-like finish. Is this possible and would plaster or render be better suited for this? Will either stick to the boards? Would it then be strong enough to hold a hanging basket or two? Thanks.