I noticed that there is no liner for the back wall under the galley. Is there a reason that this wall needs to stay uncovered? If not, can it be covered with Costco foam tiles or some type of carpeting? It seems that some people have had trouble figuring out exactly which pieces of the liner go where. It would be a simple fix if Chesapeake Light Craft supplied a one page handout with an outline of the different shapes describing exactly where they go.
No reason to leave this area uncovered, not sure why their kit doesn’t cover it. I would get 3/4″ closed cell foam to match the rest of the CLC headliner kit you have. Also page 380 of the build manual has the headliner parts labeled.
editorial comment–the headliner kit is the weakest part of the entire CLC offering. hard to fit, the surface scuffs easily, and I find (as have others) for some unexplainable reason the tiles shrink over time. I now have about 1/8-1/4 inch gaps between each segment.