The vinyl or composite railing will be a great plus for your plantings to climb on. The matching deck railing kits are simple to install. Since they are hollow and nonconductive, you can conveniently install electrical outlet conduit boxes and recessed lighting inside the railing posts. Installation methods vary depending on the specific decking. A plus with the hollow materials is that no screws or nails are exposed.
Some planks use a tongue and groove design to hide the nails.
Others use a cover strip over the recessed nails for a smooth surface. One of the most simple methods uses clip strips that are nailed to framing. The hollow decking planks are snapped over the clips. This also provides perfect plank spacing. A totally different method uses vinyl-coated steel planks are thin to fit over existing decking.