Shiplap gives a fresh spin on a farmhouse-style bathroom, like this one by design firm Cloth & Kind. These walls use 1-by-8 primed spruce, but you can use almost any species, and the thinner the wood, the cheaper per board, says Tyler Davis, owner of Athens Building Co. To further trim costs, he suggests cutting thin ⅛-inch sheets of finished plywood into strips and hanging them on the wall. Although those transoms were added, he says you can purchase fixed sidelights or transoms from a builder surplus store, or better yet from an old house or charity thrift shop, and add hinges and a chain to make them operable.
