Reverse board and batten means that the larger board goes first and the smaller board goes second, overlapping the edges of each board. Reverse board and batten also mean that the small board goes first and the larger board goes second and covers the spaces between the battens.
Same Methods Over The Years
Over the years we’ve learned that using plywood for the plank and installing battens on the plywood at regular intervals has the same result as siding for plank and fleece – For less cost and less problems because the boards are wide and tend to divide. Not sure if we have ever seen or understood how reverse board and batten work with plywood. It seems like installing large boards on top of the plywood with small spaces between them would defeat the purpose and cost-effectiveness of the plywood.
In either case, both systems will be installed on a moisture barrier such as construction paper etc. This is essentially your moisture coverage over the walls, and the wood board and fleece or back plate and fleece are just there to protect the moisture barrier. Protected from the wind from the paper, UV protection and so on.
You don’t have to seal the vertical joint. It is covered by the lath or, in your case, by a board. By the way, we learned to extend the moisture barrier about 1 inch past the floor slab so that water doesn’t run out of the floor and blow back under the floor slab. If you live in an area with high winds, you’ll want to place a felt pad between the slab and the top of the concrete stem wall for a better seal against wind-blown rain.
Also, not to seal the bottom of the board and hit the horizontal element. Rather, we want the moisture to run out. Eventually we know the board and batten will leak. That’s why we’re installing a moisture barrier under the siding. When you seal, you get on the bottom of the siding that fits on top of the metal.