The weather will not cooperate to allow me to finish my XPS insulation build! On to the next project:
When I built a few of the composte boards with wood rails or wood perimeter stringers they had a decided amount of projection out of bottom turns. Not HUGE, but enough to feel it.
Sunnova, and some others, insert on certain of their boards what is referred to as a springer. This photo shows the spring in the middle of the board running from just in fron of the back foot and ending around the front foot. Cool pic!