Alcove Bathtubs

Alcove bathtubs fit between three walls -- the standard setup in most American bathrooms. They are the most affordable and space-efficient tub option, and the only type that works as a tub-shower combo without custom framing. Standard size is 60 inches long by 30-32 inches wide by 14-16 inches deep. Available in acrylic, fiberglass, porcelain-on-steel, and cast iron. If you are replacing an existing tub in a standard bathroom, an alcove is almost certainly what you need.

Measure the alcove: length wall-to-wall, width from back wall to front edge, and height from subfloor to the top of the tub rim. Standard is 60x30x14 but 60x32 and 66x32 exist for larger alcoves. Drain side matters -- stand facing the tub and note whether the drain is on the left or right. Order the matching configuration. A wrong-hand drain means replumbing the waste line.

Alcove tubs install on a level, supported subfloor. Set the tub in the alcove, level it with shims, and secure the wall flanges to the studs with screws. Connect the drain and overflow. Mortar bed under the tub bottom is recommended for acrylic and fiberglass (prevents flex and cracking). Cast iron is self-supporting due to weight. After setting, install the surround (tile, acrylic panels, or fiberglass surround kit) and caulk all joints.