Yes, so 3/4" wide wood every 12" to 24" and a 1.5" wide at a luan skin seam. These are 4'x8' thin ply sheets. Depth is your foam thickness. No pictures of construction, but it looked like a stud wall for a house, with foam for insulation. All glued together. It was built in panels and fiberglass applied to external surfaces, which were then screwed and glued together, and then the seams were fiberglassed.Can you elaborate on what 1x pertains to?
Ie, is it a 1x1 stud every couple feet?