I am building a substantial shed, 16x8, have built the frames from 3x2 on 16" inch centres or thereabouts to match the 6x4 OSB3 sheets. I am thinking of the cladding now but read a couple of posts where the builders proposed batterning the OSB before attaching the shiplap. I was going to attach the shiplap direct to OSB, nailing through to the 3x2 frames. There is nearly 500' of studwork timber available, why attach some 2x1(?) batterns??