I noticed several homes being constructed in my area lately where they're using a material over the building wrap and underneath the siding that looks like lattice.
Is that a relatively newer technique, and what is the benefit of doing so? Is it for air flow to help keep things dry underneath?
I've seen it used under cedar shakes, board-and-batten, and other types of siding so I guess it's not specific to any one type of siding.
The location is Nova Scotia, Canada. (coastal, humid in summer, dry in winter)