Radiant Barrier Insulation

RustyRatRod said
Yes. I plan to cover the walls and ceiling with "something". I don't really know what yet. It won't be drywall, because that gets damaged easily from moisture. Maybe some thin plywood or paneling? Whatever's cheapest.

cdx plywood. You can find some with one side sanded. Be picky, you’ll find it. Stay away from osb and bare board. I would not use Masonite either.