Factors to Consider When Choosing a Bathtub
Whether you’re remodeling a bathroom or just updating the tub in a bathroom, the bathtub you choose depends on factors like tub size, comfort, your current plumbing layout and your budget.
Bathroom Space and Layout
How big is a bathtub? The answer depends primarily on the type of tub you’re considering. There are standard bathtub sizes for different types:
Alcove Tubs
The standard alcove bathtub size is between 60 and 72 inches long and 30 to 36 inches wide.
Drop-In Tubs
Drop-in bathtubs are usually between 60 and 72 inches long and 36 to 42 inches wide. Keep in mind these tubs fit into a deck, which takes up space beyond the tub.
Freestanding Tubs
Freestanding bathtubs are often between 60 and 67 inches long and 29 to 32 inches wide.
Walk-In Tubs
The average walk-in bathtub is between 48 and 60 inches long and 28 to 30 inches wide.
Corner Tubs
Corner bathtubs are typically 60 inches long and 60 inches wide, but drop-in types require a deck for installation.
Keep in mind, these are general bathtub sizes. To accurately determine how big a bathtub is and whether or not it fits your space, look at the product information for the tubs you’re considering and note the length and width measurements. Compare these to the available space and layout of your bathroom.
Knowing how to measure a bathtub is helpful if you want to replace your existing tub with a new model that has similar dimensions:
- Measure the overall length from end of the exterior structure to the other.
- Measure overall width from one side of the exterior structure to the other.
- Measure the length of the tub basin from end to end at the widest point.
- Measure the width of the basin from the widest point side to side.
- Measure the soaking depth from the overflow drain to the lowest point of the basin.
If you’re remodeling a bathroom, bathtub options might be more open. But if space is at a premium in a bathroom, bathtub models that tuck along a wall make the most of floor space and corner tubs might free up some wall space. Take a look at our small bathtub ideas for tips on choosing space-saving bathtubs.
Bathtub Materials
There are many types of materials to choose from when shopping for a home bathtub. Consider the look, durability and cost to find the right material for your bathtub. Here are the most common options:
Acrylic
Acrylic tubs are the most popular option and come in a variety of sizes, colors and shapes. An acrylic tub might be vulnerable to scratches and stains. Look for higher-grade acrylic that’s less prone to damage.
Cast Iron
Cast iron is one of the more expensive materials on the market, but it's also the most durable and less likely to dent or scratch. The material helps keep the water warm longer. Cast iron is heavy, so a reinforced floor might be necessary for installation.
Fiberglass/Plastic Composite
Fiberglass/plastic composite tubs might offer the least expensive and most lightweight bathtub options. Fiberglass tubs are some of the easiest to install. This is also the thinnest material and is more prone to fading, scratches or cracking.
Porcelain Enameled Steel
Porcelain enameled steel tubs are another less expensive alternative to cast iron. They're easy to clean and quite durable but are heavier and can chip if struck with a hard object.
There are also other, less common tub materials that could make a big visual impact in your bathroom, such as copper, solid surface or natural stone composite.
Comfort and Ergonomics
Match the tub style to everyone’s comfort and accessibility needs. For example:
- If you have children, consider a low model that's easy for them to get into and out of and that makes it easy for parents to help them.
- Walk-in tubs offer easier accessibility for everyone.
- Make sure to find a tub that’s long enough to allow you to stretch out comfortably.
- If you like to lounge, purchase a tub with a high back.
Plumbing and Installation
As you’re shopping, keep in mind factors that might affect installation. Here are some things to consider:
- If you're replacing a tub, check if your old one has a drain located on the left, right or in the center. Purchase a new tub that has the same drain location so it aligns with the existing plumbing.
- If you’re replacing a standard bathtub with a freestanding or clawfoot bathtub, you’ll likely need a plumber to move the water supply and drain lines to accommodate the new addition.
- Many tubs require a mortar base underneath. This mortar base helps prevent the tub from squeaking, cracking and breaking.
- Tubs with whirlpool or air bath features require electrical connections.
Budget Considerations
Bathtub type, size, shape and material are all key elements in the cost of a bathtub. Features like extra depth, adjustable whirlpool jets and lighting add to the cost. Before you buy, determine your budget. If the bathtub is part of a major remodel, you might be able to save money on other fixtures or features to get the perfect bathtub and stay on your overall budget. Or you might want to select a couple of less expensive bathtubs as options in case you start to run over budget.
Remember to factor in installation costs. In addition to the basic fitting of the tub the installation expenses might include:
- Permits
- Plumbing and electrical changes
- Floor or wall repair or reinforcement
- Removal and disposal of the existing tub
Set aside some of your budget for unexpected factors the installer might discover, such as code and safety issues.
Types of Bathtubs
In bathrooms, bathtubs can be statement pieces. They can also be therapeutic fixtures or a means of easy, accessible bathing. Knowing your bathtub options helps you make the best decision. Here are the most common home bathtub types.
Alcove Bathtubs
An alcove bathtub is enclosed on three sides by bathroom walls. The front surface is finished to conceal the subfloor and plumbing and can be flat or have a design molded into the material. Built-in bathtub showers are often alcove bathtubs.
Freestanding Bathtubs
These stand-alone bathtubs work well in modern or traditional bathrooms depending on the style that you select. They're usually more expensive than other types of tubs and require more water, but a freestanding tub offers extra style and can be a dramatic fixture that defines the look of a bathroom.
Clawfoot Bathtubs
Clawfoot bathtubs are also standalone tubs, but offer more vintage appeal than the modern design of a freestanding model. Of course, the supporting feet are defining elements of the look. These tubs can give the bathing area a more open feel.
Drop-In Bathtubs
These rimmed tubs are exposed on all sides and fit into a deck that's often covered in tile. You’ll usually find drop-in bathtubs typically in larger primary bathrooms where the tub is separate from the shower.
Corner Bathtubs
As the name suggests, a corner bathtub installs into a corner of the bathroom or a bathtub alcove. You can find them with flat or rounded designs. They typically take up more total square footage than standard tubs, but can be a good choice for a square bathroom layout.
Walk-In Bathtubs
Designed to provide easy access, walk-in bathtubs are taller than a typical bathtub. Most walk-in tubs come with an integrated seat, and some have whirlpool jets that can provide therapeutic relief. A handheld showerhead is a common feature of a walk-in bathtub.
Soaking Tubs
A soaking bathtub is deeper than a standard tub. The extra depth allows the bather to immerse the torso in addition to the lower body and can turn a basic bath into spa-like relaxation.
If you’re remodeling a bathroom or designing a new home, you might be wondering, “Do I need a bathtub in my house?” If you’re considering relying on showers only, think about who needs to use the fixture. The right bathtub is easy for everyone to use, while a shower might not suit the accessibility and use needs of your family today or in the future. Also consider if not having a home bathtub might make your home more difficult to sell in the future.
Tub Shapes and Colors
A range of shapes and colors lets you choose a new bathtub that works with the style of your bathroom or your bathroom décor.
Shape
The most popular tub shapes are ovals and rectangles. But there are other shapes to choose from including:
- Corner
- Hourglass
- Hourglass in rectangle
- Oval in rectangle
- Round
Color
The most popular colors are white and off-white. But if you want a tub that stands out, there are many colors to choose from including:
- Gray
- Black
- Brown
- Bronze
- Chrome or silver
- Copper
Air Baths, Whirlpool Tubs and Drift Tubs
Whirlpool baths, air baths and drift baths all provide relaxing and therapeutic benefits. However, there are a few differences.
Whirlpool Tubs
Whirlpool bathtubs push water through jets, providing a high-pressure massage. They're often helpful in physical therapy facilities for relief of aches, pains and muscle sprains. You can also control the jets in a way that you can't with air baths. The majority of whirlpool tubs are acrylic.
Air Baths
Air bathtubs have injectors on the bottom of the tub that produce millions of heated air bubbles, providing a low-pressure massage. Air bath injectors are fixed and can't be controlled like the jets on a whirlpool. However, if you like to use bath products, such as bath salts or gels, an air bath is a better choice because the injectors won't clog as easily as whirlpool jets. Most air baths are acrylic, but there are some made of fiberglass. If both whirlpool and air bath therapy are attractive, look for whirlpool and air bath combination tubs.
Drift Tubs
Drift bathtubs offer a gentle and soothing water-only soaking experience using micro jets placed in the back and foot sections of the tub. These ports send tiny, individual streams of water into the bath where they create softly flowing currents. They’re available in alcove and drop-in designs and are made of acrylic.
Additional Features to Consider
Other features are related to therapy types, safety and convenience.
Jets and Hydrotherapy
In terms of typical bathtubs, hydrotherapy typically includes whirlpool, air bath, drift tub and heating features. This type of functionality creates a bathtub that’s a step up from a basic tub. Hydrotherapy turns a soak into a relaxing or energizing bath and is available in several tub types.
Non-Slip Surfaces
Non-slip surfaces are necessary for safe bathing. Look for tubs that meet slip resistance standards from ATSM International. If a surface feels too slippery you can add adhesive treads or non-slip bathtub mats to a tub. Grab bars and tub grips are other options that can make it easier to safely get into or out of a tub.
Built-In Storage and Shelving
If you want the convenience of built-in shelving, look for a tub that includes an integrated surround. This will typically be an alcove tub. You can also purchase separate bathtub walls and surrounds with built-in shelves that fit some alcove tubs. Full bathtub surrounds often work with built-in bathtub/shower combinations, combining organization options with convenience and a space-saving design.
Questions to Ask a Plumber or Electrician
Before you purchase a whirlpool tub or air bath, ask a plumber and/or an electrician the following questions:
- Will it fit in my existing space, or will I need to reconfigure the bathroom?
- Will it work with my current water supply and drain lines?
- Will it fit through the door?
- Will my existing wiring support a whirlpool, air bath or drift tub?
- Will my floor need to be reinforced to accommodate the weight?
Faucet Considerations
You'll also need to consider the type of faucet that you want with your new tub.
Deck-Mounted Faucet
If you have limited space around the tub, mount the faucet on the actual tub. You'll usually see deck-mounted faucets with a drop-in or whirlpool tub. It's also the most economical choice.
Floor-Mounted Faucet
If you like the look of exposed pipes, a floor-mounted or freestanding faucet is a good option. Measure carefully because these faucets require more room around the bathtub. They work with freestanding tubs.
Wall-Mounted Faucet
Wall-mount faucets can produce a longer water arch and offer more surface space. These faucets are good to use with built in bathtub/shower combinations.
Installation and Maintenance Tips
Installing a bathtub can be time consuming and difficult to do yourself. Learn more about our installation services. If you’re considering taking on the project, there are several factors to consider, including:
- Local codes might require that a licensed plumber, and, if electrical work is necessary, a licensed electrician do the work.
- Replacing a bathtub might uncover issues or hidden damage that require additional expertise.
- Some bathtubs require structural reinforcement of the bathroom floor.
- Bathtubs are unwieldy and some models are very heavy.
Your tub comes with cleaning and maintenance instructions that vary by material and type. For example, you might need to use mild, non-abrasive cleaners for the tub surface. If you have a whirlpool bath the whirlpool system needs monthly cleaning and flushing.
Get Started Choosing a Bathtub
You can shop for bathtubs on Lowes.com by size, type, bath therapy, price range and more. Or you can visit your local Lowe’s and talk to a Red Vest associate, who can help you choose the perfect bathtub.
Choosing a Bathtub: FAQs
Use the answers to these common questions to inform your bathtub selection.
What’s the Most Durable Type of Bathtub?
A cast iron bathtub is the most durable type of bathtub. The material is long lasting and resists scratches so it’s easier to maintain than less durable options. A cast iron bathtub also has the benefit of keeping your bath warm longer than other materials.
Are Walk-In Tubs Worth the Investment?
A walk-in tub can be worth the investment if your goal is to have a tub that allows easy access for family members now and in the future. In addition to being easier to step into than other tubs, a walk-in tub typically offers whirlpool jets and an integrated seat, as well as a handheld showerhead, making it a comfortable and convenient option.
How Do I Maintain a Whirlpool Tub?
You need to maintain the jets and circulation components of a whirlpool tub each month. Run warm water in the tub so the level is a couple of inches above the jets. Add two teaspoons of dishwasher detergent to the water and half of a cup of household bleach. Turn on the jets and let them circulate the water and cleaning mixture for a couple of minutes. Turn off the jets, drain the tub and refill it with cool water. Turn the jets on and circulate the water for five minutes, then drain. Keep in mind, these are general tips only. Follow the maintenance instructions for your specific tub.