Bath, Slate, Vessel, Enclosed, Wood, Stone Slab, and One Piece In the master bath, on the third floor, Greenguard-certified slate covers the walls and floor. An existing window was transitioned into a doorway. “I thought that’d be weird, a door in the shower,” David recalls. “But Alysia said it would make that particular terrace all the more private if we have to get to it through our shower!”  Best Bath Vessel Enclosed Stone Slab Photos from Sustainability Guided Every Decision at this Town House Remodel in Harlem