A sunken bathtub is a drop-in bathtub that is integrated with the floor. The outer profile of the bathtub is hidden, with only the rim exposed as the rest of the bathtub is made flush with the floor.
A sunken bathtub consists of several essential components that ensure its functionality, safety, and seamless integration into your bathroom design. Understanding these parts helps you plan for installation and maintenance while enhancing your overall bathing experience.
Proper placement and design prevent water pooling and support the seamless tub operation.
The recessed vessel is designed to hold water for bathing.
It is available in various materials, such as acrylic, stone resin, cast iron, or fiberglass, and offers durability, heat retention, and aesthetic versatility.
The fixture that supplies water to the bathtub.
Options include floor-mounted, wall-mounted, or integrated faucets, depending on the tub’s layout and plumbing design.
The edge surrounding the bathtub, provides a clean transition between the tub and the bathroom floor.
Often finished with materials like tile, marble, or wood for a polished look.
Built-in steps or a sloped entry that ensures safe and easy access to the tub.
Typically designed with anti-slip surfaces or integrated lighting for added safety and functionality.
The network of pipes and drains ensures efficient water flow out of the tub.
Sunken bathtubs are available in a few variations that alter the material and the shape of the bathtub itself. Here are the common types:
A partially sunken tub is a bathtub that is partially lowered into the floor, but not completely submerged. This means that the bathtub maintains an outer rim that protrudes from the floor. This design removes one of the biggest drawbacks to a standard sunken tub in that it can pose a tripping hazard.
Although the higher rim can still be tripped over, the bathtub is not completely flush with the floor, so it is more noticeable as a bathtub than the standard sunken tub.
Like every bathtub, a sunken bathtub can be combined into a shower combination. A shower can be installed in the same space without any additional construction considerations. All that needs to be placed is an adjustable shower faucet and a shower curtain.
A sunken roman tub is a soaking bathtub that is installed at the floor level. Attempting to mirror the large cavernous baths of the ancient Romans, these bathtubs are aesthetically pleasing, but lack many modern features such as jets, internal heating and no shower faucet. These bathtubs are generally deep as well, allowing an individual to sit comfortably while they soak.
Roman tubs are generally constructed from marble and tile, which can drastically impact their affordability when compared to other sunken bathtubs.
A sunken japanese bathtub is a soaking bathtub that is made flush with the floor. The internal aspects of the bathtub are entirely flush with the floor, creating a very seamless aesthetic with the rest of your bathroom. There are also built in stairs or entry points to allow for easy access to the bathtub as well.
Sunken bathtubs are popular for homeowners looking to combine style and functionality in their bathrooms. These tubs are recessed into the floor or a platform, creating a sleek and seamless look that enhances the overall design of a space. However, sunken bathtubs have benefits and drawbacks as with any design choice. Below, we’ve outlined the pros and cons of sunken bathtubs to help you decide if this style fits your home.
| Pros | Cons |
| Seamless bathroom aesthetic | Long install time |
| Luxurious aesthetic | Can be a tripping hazard |
| Easy entry and exit | A permanent fixture, making it less flexible for future remodels/alterations |
| Popular for resale value | More expensive to replace compared to other bathtub types |
| More affordable than other bathtub types | |
| Easy to clean and maintain |
This table highlights the key advantages and disadvantages of sunken bathtubs. By considering these factors, you can make an informed decision about whether a sunken tub aligns with your bathroom design goals and practical needs.
Sunken bathtubs are a timeless choice for creating a luxurious and spa-like atmosphere in any bathroom. Unlike traditional bathtubs, sunken tubs are recessed into the floor or a built-up platform, blending seamlessly with the surrounding design. They come in a variety of sizes to accommodate different bathroom layouts, from compact models for small spaces to expansive options for large, opulent bathrooms. Below, we’ve categorized sunken bathtub sizes into small, medium, and large to help you choose the perfect fit for your space.
Small sunken bathtubs are ideal for bathrooms with limited space, offering comfort and functionality without overwhelming the layout.
| Size (inches) Description | Compact, rectangular design for tight spaces. |
| 45 × 30 | Slightly longer for added comfort. |
| 46 × 30 | Narrow and elongated for smaller bathrooms. |
| 47 × 30 | Standard small size with a sleek rectangular shape. |
| 48 × 30 | Offers extra legroom without taking up too much space. |
| 41 × 41 | Square-shaped, ideal for unique bathroom designs. |
| 63 × 30 |
Medium-sized sunken bathtubs strike a balance between space efficiency and comfort, making them a versatile choice for many bathrooms.
| Size (inches) | Description |
| 57 × 30 | Elongated design for moderate spaces. |
| 58 × 30 | Provides extra room for a relaxing soak. |
| 59 × 30 | Sleek, standard medium size. |
| 60 × 30 | Popular option for most bathrooms, offering ample room. |
| 61 × 30 | Slightly extended for additional comfort. |
| 62 × 30 | Great for medium to larger spaces. |
| 63 × 30 | Stylish and functional, offering a luxurious feel. |
Large sunken bathtubs are perfect for spacious bathrooms, providing an indulgent soaking experience and making a bold design statement.
| Size (inches) | Description |
| 70 × 32 | Extra-long and wide for maximum comfort. |
| 71 × 34 | Adds generous space for a deep, relaxing soak. |
| 72 × 34 | Standard large size with a sleek, modern look. |
| 73 × 34 | Slightly extended for a luxurious bathing experience. |
| 74 × 35 | Designed for ultimate relaxation in expansive bathrooms. |
| 75 × 36 | Oversized for a true spa-like feel. |
These tables provide a clear breakdown of sunken bathtub sizes, helping you choose the ideal option for your bathroom’s layout and style. Whether you’re designing a compact retreat or a grand bathing oasis, there’s a sunken tub size to suit your needs.
Sunken bathtubs bring both style and functionality to any bathroom, offering several unique advantages that make them a standout choice for homeowners. By being recessed into the floor, these tubs create a seamless and luxurious experience while maximizing space and comfort. Below are the key benefits of installing a sunken bathtub and how they can elevate your bathroom design.
One of the standout benefits of a sunken bathtub is its ability to blend effortlessly into your bathroom’s design.
Sunken bathtubs exude elegance, transforming your bathroom into a spa-like retreat.
Because they are built into the floor, sunken bathtubs can make your bathroom feel more open and spacious.
The floor-level design of sunken bathtubs makes them more accessible compared to traditional raised tubs.
Regardless of the size or material, a sunken bathtub has the ability to transform the simplest designs into something extraordinary.
Sunken bathtubs are more than just functional fixtures; they are transformative design elements that bring luxury, space efficiency, and style to your bathroom. Whether you’re aiming for a seamless aesthetic, increased functionality, or a spa-like experience, a sunken bathtub can be a game-changing addition to your home.
Installing a sunken bathtub requires careful planning, precision, and attention to detail. Unlike traditional bathtubs, sunken bathtubs are recessed into the floor, creating a seamless and luxurious look. Below is a step-by-step guide to ensure your installation process is smooth and successful.
Before beginning installation, choose where the sunken bathtub will be installed and determine the bathtub size that fits your space.
Since a sunken bathtub is integrated into your home’s structure, the quality of your flooring and subfloor material is critical.
Sunken bathtubs require extra floor space compared to traditional tubs because they are recessed into the floor.
Prepare the site by removing any obstacles that could interfere with the installation.
Unlike traditional bathtubs, sunken tubs lack built-in structural support, so a sturdy frame is essential.
You’re ready to install the bathtub once the site is prepared and the frame is built.
One of the defining features of a sunken bathtub is its seamless integration with the floor.
Once the bathtub is installed and level, complete the finishing touches.
Following these steps, you can achieve a professional-quality sunken bathtub installation that enhances your bathroom’s functionality and aesthetic appeal. If you’re unsure about any part of the process, consulting a contractor or professional installer is highly recommended to ensure safety and accuracy.
Maintaining your sunken bathtub can be tricky, so here are a few helpful hints before starting this project:
Like with any bathtub, it is best to maintain your bathtub at least once a week. You want to clean the area around your bathtub regularly to avoid any mildew or mold deposits. In the case of sunken bathtubs, you want your contractor to build access to the pipes below as it is very easy for an undetectable leak to sprout.
The more access you have to the area below, the easier your life will be. If an issue arises, you will need to remove the tub from the surround and determine the cause of the problem, which can grow to be quite costly and messy down the line, so plan ahead and have your contractor build as many access points to your bathtub below.
While sunken bathtubs are an attractive fixture, they aren’t suitable for every home. They can add a luxurious aesthetic that can easily elevate the rest of your bathroom and blend seamlessly with either classic or modern designs. Since the bathtub’s rim is flush with its surroundings, it’s also easy to clean and maintain and can increase your home’s resale value. However, they require a large bathroom, making it difficult for smaller homes to accommodate. Additionally, they aren’t practical for busy homes with many small children, and the invisible edges could pose potentially dangerous for small children. Finally, if you rarely take baths, a sunken bathtub may prove to be a poor investment choice, and it will cost even more money to replace it.
Eric is the founder and president of Badeloft USA. He has been the president of Badeloft’s US division for over ten years and oversees all marketing and branding aspects of Badeloftusa.com.
His expertise lies in small business development, sales, and home and bathroom industry trends and information.
Contact us with any business related inquiries.
Free material samples and tub templates
Half bathrooms are increasingly popular in modern homes, especially in urban and suburban settings, where maximizing functionality within limited space
Full bathrooms are a cornerstone of modern homes, offering functionality and comfort. They provide a complete suite of fixtures and
If you’re looking to create a luxury spa experience in your home, you might have considered getting a whirlpool tub.
Whether you own a fiberglass bathtub or a luxurious copper bathtub, cleaning is an essential part of making you and
