XPS as a bottom plate?
I'd read worthy's suggestion in other threads to use XPS as a bottom plate for basement walls, and I have questions.
I suppose you score and snap to 3.5" widths - and use 1" thick material? Any thicker and I'd think you'd risk not having a good nailer for base trim.
If using tapcons to secure the plate, do you simply bore through the bottom plate of the wood framing, through the XPS plate, and into the floor? Or do you somehow secure (glue?) the XPS to the concrete floor first?
I can think of lots of variations here, but I'd like to hear a working method from someone that's been there.