You could use hardie trim cement miratec borate treated fiber smarttrim lp or probably a few other products that would be similar.
Attaching a 2x4 fence post to hardy board siding.
Mark the siding where you want to drill the hole.
The cap rail is an important part of this fence.
This fencing mimics the siding once applied to farm sheds barns and similar outbuildings.
Install the posts top and bottom rails and.
Skip to the middle of the plank and work your way to the start of the plank at the right driving a nail into each stud.
Ideally you would have backing in the wall to nail this trim to sides especially but you could also attach it to your sheathing provided it is a minimum of 7 16 ply osb.
Nail the siding to the building frame using the nail gun and siding nails.
Without it each board s end grain would be exposed to the weather and the life of the fence would be shortened.
Nail the siding between three quarter and one inch from the top of the siding starting three eighth of an inch from the edge of the plank.
6 align the bracket holes with the pilot holes in the siding.
However some homeowners would also like to attach a mailbox to the hardiplank surface.
2 place the siding on two 2 by 4s so that the mark is between the boards for support when the siding has not been installed.