IF I WOULD LIKE TO USE NEWTECHWOOD DECK BOARDS FOR FENCING, HOW MUST THEY BE BRACED?

This would depend on if the boards are installed vertically or horizontally. If they are installed vertically, the boards do not need to be braced beyond the frame in which they are kept upright. For horizontal fencing board installation, we would recommend bracing every 24 to 36 inches to avoid sagging.