You are spot on with your guidance. I looked up the British Standard guidance on closeboard fencing and they agree with your guidance that only one nail should pierce each board. Whish I'd know this before I installed 3-4 meter already, although I have overlapped by 40mm so I'm not right on the...
I am installing about 10 meters of closeboard fencing - half complete and I'm getting really confused about nailing guidance. I've previously successfully installed about 3 meters of fence with no problems using this method below.
I overlap my 6inch feather planks by 40-50 percent, never...