Shiplap cladding is watertight, and water actually run off the sides of the shed more effectively. for the wood treatment, many experts recommend using a spirit-based treatment for shiplap cladding. this type of treatment actually sinks into the wood used instead of sitting on the surface, providing better protection.. Installing shiplap - tips and tricks - duration: 6:38. jordan smith 307,041 views. how to build a garden shed onto a wooden shed base with wickes - duration: 5:59. wickes 18,357 views.. The pine shiplap has a lovely warm hue which would be nice for a mountain retreat or country shed, but i wanted pure white walls. we screwed our boards into the wall using the white screws. the great thing about shiplap is that the boards slot right on top of each other, so it is pretty quick to install..