Drop in the tub, using sealant at the rim to prevent water from entering the deck. The tub will sit on its feet on the floor. The floor should be level. If it isn’t, Khiel says you can use shims.

Amidst peeling wallpaper, fluorescent blue tub rings, and floor tiles long past salvation, you may be looking to renovate your bathroom. Not all modern bathroom ideas are created equal—just ...