I have a basic design and dimensions for this full enclosure. My problem is exterior. I want something weatherproof but vinyl siding seems like my only choice. If I use pressure treated CDX plywood sheathing and vinyl siding, that's a lot of exterior and expense.
I welcome any ideas.
I'm using 1/16 fiberglass sheets as the interior shower walls. Might that also work on the outside on top of the PT CDX?