Here is one of our latest projects a Chapel conversion in Cardinham. The chapel had hempcrete insulation sprayed on at 180mm thickness. These are some pictures of the first coat (float coat).
After applying the base coat and floating it to get a smooth finish we use lime putty. The putty is applied at 2mm to get that fine finish!!!
As you can see lime putty is a great natural finish that flows with the undulations in the wall.