Use a 2 inch wide scrap board as a spacer once you have determined your layout.
How to install reverse board and batten siding.
Install 10 x 1 vertical siding boards from top of water board drip flashing to top of wall spaced 1 apart.
If your sheathing is not solid plywood or osb these strips are needed to provide a nailing surface.
For example i know the horizontally running seam you use z flashing so that any water running down the upper sheet will fall onto the flashing and in front of not behind the lower sheet.
Install board and batten siding and trim.
Install 3 x 1 border trim at top of siding.
The wider boards are nailed over them so the battens are behind the gaps.
Homesteaders and farmers would use sawmills to cut the long boards and the battens were put in place to make the structure as airtight as possible.
Install 10 x 1 water table skirt board at base of wall.
When you install plywood board and batten or in my case reverse board and batten siding how do you seal the vertically running seam of two sheets.
Install drip flashing on top edge of skirt board.
In some areas it is common to attach vertical 1x2 furring strips before installing board and batten siding.
Attach strips around windows and doors then lay out and attach horizontal strips every 16 inches.
The method creates an ample space between the siding and the weather resistive barrier for enhanced drying ability a significant concern in this deep superinsulated wall assembly.
Traditionally board and batten siding starts with wide vertical planks boards which are then joined together by thin vertical strips battens to cover the seams.
Nail the strips to framing members.
Nail the wide boards over the plywood to create the look of reverse board and batten.