Types of Bathtubs: Styles and Materials

"Just a new tub" sounds simple until you see the options. The types of bathtubs on the market range from a basic alcove tub that slides into a three-wall nook to a freestanding sculptural piece that sits in the middle of the room. Each style asks something different of your floor, walls and plumbing, and each material changes how the tub feels, how long it holds heat and how much it weighs.

We split this explainer in two: first installation styles, then materials. A short buyer's checklist closes it out.

Part one: installation styles

Alcove

The workhorse of hall baths. An alcove tub has one finished front (the apron) and a flange on the other three sides that tucks behind the wall tile or surround. It's typically paired with a shower head above, controlled by a valve with a tub spout diverter.

Space: fits between three walls, commonly about 60 inches long. Why choose it: efficient use of space, easy to combine with a shower, the most straightforward replacement.

Drop-in

A shell with a rim that sits on top of a built deck or platform, often tiled. The deck hides plumbing and gives a ledge for bath products.

Why choose it: a built-in, finished look, flexible placement, and a wide variety of shapes. Watch for: the deck takes floor space and needs its own waterproofing at the rim.

Undermount

Similar to drop-in, but the deck surface, often stone or tile, overlaps the tub rim. Wiping water back into the tub is easy and the look is very clean. It requires precise fabrication.

Freestanding

A finished tub on all sides that stands on the floor. Modern freestanding tubs often have smooth, oval or rectangular forms.

Why choose it: a focal point for primary bathrooms. Watch for: it needs open floor around it for cleaning, a floor- or wall-mounted filler, and usually a relocated drain. Our spa bathroom ideas show how they are commonly used.

Clawfoot

The vintage version of freestanding, raised on decorative feet, traditionally made of cast iron. Exposed supply lines and a period faucet complete the look.

Soaking

Defined by depth, not installation style. A soaking tub has a deeper water level so your shoulders can be under water. Soakers come in alcove, drop-in and freestanding versions. They take more water and longer to fill, which matters if your water heater is small.

Walk-in

A tub with a watertight door in its side and a built-in seat, designed for people who have trouble stepping over a tub wall. You must be inside with the door shut while it fills and drains, so fill and drain speeds are worth comparing. They pair well with other features on our accessible bathroom page.

Whirlpool and air tubs

Jetted tubs in two flavors. Whirlpools pump bath water through adjustable jets; air tubs blow warm air through small ports for a gentler bubbling. Both need an electrical circuit (with GFCI protection, per typical code) and an access panel for the motor.

Part two: materials

A few practical notes on materials

• Acrylic is a popular replacement material because it's light, comes in many shapes and is easy to carry into a home or condo.
• Cast iron holds heat for people who soak a long time and want water to stay warm, but plan for the weight and the crew needed to move it.
• Steel tubs are economical but can feel cold and sound hollow unless the installer adds insulation or a sound deadener.
• Stone resin tubs offer a high-end matte look in freestanding shapes.

Tip: Before ordering, sit in the tub in a showroom if you can. A tub that looks generous may have a steep back or a short interior length. Comfort is personal.

Common bathtub sizes

These are typical dimensions; manufacturers vary.

Before ordering, measure the doorways and hallway turns the tub has to pass through. A one-piece tub-and-shower unit is often too large to fit through an existing door, which is why remodels usually use a separate tub with a tiled or multi-piece surround.

Replace, refinish or reline?

If the tub is cracked, the walls are soft or the surround is failing, replacement is the option that addresses the cause. Our bathtub replacement page explains the process.

What happens to the walls when a tub is replaced

People are often surprised that swapping an alcove tub usually means removing at least the lower rows of wall tile or the entire surround. The tub's flange sits behind the wall finish, so the old tub cannot come out cleanly without opening the wall. Once it is open, the installer can check for rot or water damage at the base of the studs, add a proper backer with waterproofing at the surround and seal the new flange correctly. That is why most tub replacements become small surround remodels, and why it is a natural time to update the valve and add a niche. In older homes, an inspection of the drain and overflow is part of the job too.

Buyer's checklist

1. Measure the existing opening and doorway path; a tub must fit through the house.
2. Note the drain side (left or right) for alcove tubs.
3. Confirm water heater capacity for deep soakers.
4. Check floor structure for heavy tubs on upper floors.
5. Decide filler type and location for freestanding models.
6. Consider who uses the tub, now and in ten years. Families with young children have their own priorities, covered in kids' and hall bathroom ideas.

That last point matters. Many families find they rarely bathe and would rather have a larger shower; our answer to replacing a tub vs. converting to a shower walks through the decision, and our tub-to-shower conversion page shows what that project involves. If you're keeping a tub, bring your measurements to a free consultation and we'll narrow the options to tubs that fit your opening and your doorways.