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Best Foam For Under Bathtub (2025 Updated)

If you’re looking for a solution to prevent water leaks and protect your bathroom floor, foam for under bathtub could be just the thing you need. This versatile material is designed to keep water from seeping into the subfloor and causing damage, which can be a costly and time-consuming problem to fix. Whether you’re installing a new tub or replacing an old one, foam can be a great choice for all your under-bathtub needs.

When considering foam for under bathtub, there are a few factors to keep in mind. Firstly, you’ll want to think about the size and shape of your tub, as this will determine how much foam you’ll need to purchase. You’ll also want to consider the material of your subfloor and the type of adhesive you’ll need to use to secure the foam in place. Additionally, it’s important to choose a foam that is both durable and water-resistant, so you can be confident that your investment will last for years to come.

If you’re still not sure whether foam for under bathtub is right for you, ask yourself these questions: Have you experienced water damage in your bathroom before? Are you worried about leaks and spills ruining your floors? Do you want to protect your investment and extend the life of your bathtub? If you answered yes to any of these questions, foam could be an excellent solution for your needs. So why wait? Start exploring your options today and find the perfect foam to keep your bathroom safe and dry.

10 Best Foam For Under Bathtub

# Product Image Product Name Product Notes Check Price
1
This product is ideal for providing a soft, non-slip surface in the bathroom that dries quickly and feels plush.
2
This product is ideal for use as a non slip, quick drying, absorbent rug in bathrooms, in front of bathtubs, showers, and sinks.
3
This product is ideal for those who want a luxurious and relaxing soak in a hydromassage whirlpool bathtub.
4
This product is ideal for those looking for a luxurious and relaxing spa experience in the comfort of their own home.
5
The product is ideal for those looking for a spacious and comfortable bathtub with an integrated apron, flange, and right-hand drain.
6
The product is ideal for preventing slips and falls in the bathroom while providing a comfortable bathing experience.
7
Ideal for a luxurious and modern bathroom renovation with ample soaking space and sleek design.
8
This product is ideal for those who want a luxurious and relaxing bathing experience in the comfort of their own home.
9
Ideal for use in the bathroom as a soft, water-absorbent and quick-drying mat for bathtubs or under sink areas.
10
This product is ideal for those seeking a 60-inch x 30-inch alcove bath with an integral apron, flange and left hand drain.
This product is ideal for providing a soft, non-slip surface in the bathroom that dries quickly and feels plush.
This product is ideal for use as a non slip, quick drying, absorbent rug in bathrooms, in front of bathtubs, showers, and sinks.
This product is ideal for those who want a luxurious and relaxing soak in a hydromassage whirlpool bathtub.
This product is ideal for those looking for a luxurious and relaxing spa experience in the comfort of their own home.
The product is ideal for those looking for a spacious and comfortable bathtub with an integrated apron, flange, and right-hand drain.
The product is ideal for preventing slips and falls in the bathroom while providing a comfortable bathing experience.
Ideal for a luxurious and modern bathroom renovation with ample soaking space and sleek design.
This product is ideal for those who want a luxurious and relaxing bathing experience in the comfort of their own home.
Ideal for use in the bathroom as a soft, water-absorbent and quick-drying mat for bathtubs or under sink areas.
This product is ideal for those seeking a 60-inch x 30-inch alcove bath with an integral apron, flange and left hand drain.

1. Soft Splendor Bath Mat For Beautiful Bathrooms

SONORO KATE Bathroom mats are designed to provide safety, comfort, and style in your bathroom. The non-slip PVC bottom features high-quality mesh PVC material that prevents the mat from shifting and skidding, keeping you and your family safe from slipping in the bathroom. It is important to note that the mat should only be placed on a clean, dry, and flat surface to avoid slipping accidents. The mat is constructed with thousands of individual polyester shags, which creates a soft and warm feeling underfoot. The luxurious soft pile soothes tired feet and shields toes from the cold floor, making it a perfect addition to any bathroom.

The ultra-absorbent SONORO KATE Bathroom mats are made of thousands of ultra-soft individual microfiber shags, making them highly absorbent. The thick chenille fabric absorbs water quickly, protecting your floors from dripping water while you're getting out of the bath, shower, or getting ready by the sink. Moisture is trapped in the mat's 1.16'' deep piles, allowing the bath rug to dry quickly and cleanly.

Cleaning the SONORO KATE Bathroom mat is a breeze. It is easy to clean, and you can machine wash it with cold water and mild detergent. You can tumble dry it at low speed or hang it to dry. The color will stay vibrant for many years, no matter how many times you wash and dry it.

Our bathroom rugs are available in a variety of colors and sizes, making it easy to find the right rug to decorate your bathroom. If for any reason you are not satisfied with your product, SONORO KATE offers a replacement or a refund. They stand by their products 100% and want their customers to love them as much as they do!

Pros

  • Non-slip PVC bottom for safety
  • Soft and warm polyester shags for comfort
  • Ultra-absorbent microfiber shags for quick drying
  • Easy to clean and maintain
  • Variety of colors and sizes available

2. Montvoo Quick-Dry Rubber Bath Mat Rug – Gray

Introducing the fast-absorbing and quick-drying soft diatomaceous earth bath mat that can suck up dripping water within just 0.5 seconds when you come out of the bathtub or shower. The mat is designed to leave no watermarks within a few minutes of use, making it look as if it had never been wet. The bathroom rug features a Faux suede surface that is dirt-resistant and durable. Unlike traditional chenille bathroom floor mats, you will never be bothered by fiber dropping or fuzzy pilling problems. This rubber bath rug is much more durable and does not experience any problems caused by fibers such as shedding, fading, wearing, dirt, or hair hiding.

The 100 percent high-quality rubber-backed bath mats are perfect for anti-slip on wet floors. They grip on wet and smooth floors tightly and flatly without skidding or curling up, minimizing the risk of slipping for kids and the elderly. Say goodbye to traditional slippery TPE/TPR backed bath rugs for the bathroom.

The washable bath mat is easy to clean and maintain. Thanks to the hairless new-tech layer, water evaporates quickly, and dirt and hair cannot attach to the surface. Therefore, you do not need to dry or clean the washable bathroom rugs every day. If you want to clean it after long-time use, simply wipe the washable bathroom rugs with a wet cloth, or rinse it with a shower nozzle. The bath rug for the bathroom looks as good as new now.

This multipurpose bath mat is more than just a mat for the bathroom. It can be used wherever it is easy to get wet, or wherever you want to add warmth to your feet. As a thin bathroom rug that fits under a door, it can be used as a laundry room mat, kitchen mat, pet feeding mat, desk mat, in front of a sink mat, RV bath mat, and more.

Pros

  • Fast-absorbing and quick-drying bath mat
  • Dirt-resistant and durable Faux suede surface
  • 100 percent high-quality rubber-backed bath mats for anti-slip on wet floors
  • Easy to clean and maintain
  • Multipurpose bath mat for use in various locations

3. Empava Luxury 2-Person Whirlpool Spa Tub.

The Empava Modern Acrylic Massage Bathtub is a perfect addition to your bathroom that lets you relax and unwind in luxurious comfort. Designed with a modern freestanding style, this bathtub comes with six large output spa jets, four small body jets, a one horsepower motor, computer control, a shower head faucet and knobs, and is manufactured in the US. With a 3-year warranty, this bathtub is a perfect choice for those who want to experience a spa-like experience at home.

Made of 100% glossy white acrylic, the Empava freestanding Massage tub is reinforced with fiberglass, ensuring long-lasting durability. It can hold up to 100 gallons of water and has outer dimensions of 59” L x 59” W x 28” H. Installation is a breeze, as all hardware is included, including the drain, faucet, and knobs. The high-quality, replaceable showerhead and massage jets are also included for your convenience.

The UL certified motor ensures that the bathtub functions smoothly and efficiently. The Empava Modern Acrylic Massage Bathtub is designed to provide you with the ultimate spa experience in the comfort of your own home.

Pros

  • Modern freestanding design
  • Six large output spa jets and four small body jets
  • One horsepower motor and computer control
  • Fiberglass reinforcement for long-lasting durability
  • Easy installation with included hardware
  • High-quality replaceable showerhead and massage jets
  • UL certified motor for smooth and efficient functioning

4. Empava Luxury Whirlpool Spa Bathtub

Experience ultimate relaxation with the Empava Whirlpool Tub. This luxurious tub features 8 adjustable water jets, with 2 in the lumbar region, 2 in the body region on each side, and 2 in the foot region. The 0.75HP water pump delivers ample power for the jet system, providing a soothing massage for the entire body. The tub is made of 100% glossy white acrylic and boasts a contemporary stand-alone design that complements any bathroom decor.

The ergonomic control knobs are designed for simplicity and ease of use, while the generous 59-inch length provides plenty of room to stretch and relax. The 13.76-inch soaking depth allows an average adult bather to submerge up to their shoulders, creating a truly immersive and relaxing experience. The classic double-ended design features gently sloping lines that follow the natural curves of your body, providing exceptional comfort.

With outer dimensions of 59.06 inches in length, 29.53 inches in width, and 22.05 inches in height, this tub has an effective capacity of 60 gallons. The tub also comes with a UL certified motor, center drain, faucet, knobs, showerhead, water inlet, two black headrests, and pre-drilled and pre-installed whirlpool jet accessories, making installation a breeze.

The Empava Whirlpool Tub is covered by a 2-year limited parts warranty that covers the tub feet, drain, overflow, knobs, jets, headrest, and any leaks on the body. So why wait? Bring the luxury and relaxation of a spa to your home with the Empava Whirlpool Tub today!

Pros

  • 8 adjustable water jets provide a soothing massage for the entire body
  • Large 59-inch length and 13.76-inch soaking depth provide ample room for relaxation
  • Classic double-ended design features gently sloping lines for exceptional comfort
  • UL certified motor and pre-installed accessories make installation easy
  • 2-year limited parts warranty provides peace of mind

5. Underscore Alcove Bath With Right Drain

Introducing the 19-inch step-over height bathtub that offers you the convenience of a standard 21-inch bath. This bathtub is designed to provide you with a comfortable bathing experience with its molded lumbar support. The slotted overflow feature allows for deep soaking, ensuring that you enjoy a relaxing soak in the tub. The bathtub also comes with an integral apron that gives it a clean, finished look. Its integral flange helps prevent water from seeping behind the wall and simplifies alcove installation.

With a capacity of 68.0 gallons, this bathtub is made of acrylic, which is a durable material that can withstand frequent use. It has a right drain, and users need to purchase K-7271 or K-7272 Clearflo slotted overflow bath drain (sold separately) to install it. If you are looking for a bathtub that offers convenience, comfort, and durability, this is the perfect choice for you. Install it in your alcove and enjoy a luxurious bathing experience.

Pros

  • Convenient 19-inch step-over height
  • Molded lumbar support for extra comfort while bathing
  • Slotted overflow allows for deep soaking
  • Integral apron creates a clean, finished look
  • Integral flange helps prevent water from seeping behind the wall
  • Durable acrylic construction
  • Easy alcove installation

Cons

  • – Requires K-7271 or K-7272 Clearflo slotted overflow bath drain (sold separately)

6. Safestep Deluxe Bathroom Bathtub Mat

Looking for a comfortable and non-slip bathtub mat? Look no further than this Deluxe Soft Bathtub Mat with Suction Cups! Made with soft materials, this mat is comfortable underfoot and features small holes throughout to allow water to circulate and keep it clean. Measuring a generous 36" x 17", this extra large shower mat provides maximum coverage and features a beautiful hexagon design that complements all design styles.

One of the best things about this mat is that it is machine washable, making maintenance a breeze and ensuring it always looks fresh and clean. It's also made of durable materials that are designed to last a lifetime, withstanding constant use while maintaining its appearance. The bath mat is available in multiple color choices and is perfect for use at home, in the gym, or at a salon.

Installation is easy and hassle-free. Simply clean the surface of your bathtub well, wet the surface with 1/4 inch of water, and place the non-slip shower mat inside. Firmly press down on the suction cups for a tight grip and rinse the mat after each use. Let it dry and enjoy a comfortable and safe shower experience every time!

Pros

  • Soft and comfortable underfoot
  • Features small holes throughout to allow water to circulate and keep it clean
  • Extra large size provides maximum coverage
  • Beautiful hexagon design complements all design styles
  • Machine washable for easy maintenance
  • Made of durable materials that last a lifetime
  • Suitable for use at home, in the gym, or at a salon
  • Easy and hassle-free installation

7. Contemporary Acrylic Soaking Tub – Woodbridge B-0006

Indulge in a luxurious and comfortable bathing experience with the Woodbridge non-slip bathtub. Measuring 54 inches in length, 28 3/8 inches in width, and 28 7/8 inches in depth, this bathtub has an effective tub capacity of 55 gallons, making it perfect for a relaxing soak. The non-slip design ensures that the bathtub meets ASTM standards for slip resistance, providing a smooth and easy-to-clean surface that won't discolor over time.

This premium-quality bathtub is made of 100% high-gloss white LUCITE acrylic, which is reinforced with ASHLAND resin and fiberglass. These top-quality materials are rarely used by other manufacturers due to their relatively high cost. The gently sloping lines of the bathtub follow the natural curves of your body, providing exceptional comfort.

The Woodbridge bathtub is easy to clean and maintain, thanks to its Enduraclean surface. This stain-resistant, scratch-resistant, and durable surface maintains its high gloss even after long-term use. The bathtub is suitable for one or two persons and has a maximum bearing capacity of up to 1000 lbs, thanks to its bottom with a stainless steel bracket and double-walled reinforced design that provides maximum insulation and keeps water at its desired temperature longer.

The package includes a solid brass brushed nickel drain, stainless steel brushed nickel overflow, user & instruction manual, and an extremely solid package – a very firm carton box used to transport bathtubs, ensuring safe delivery. The Woodbridge bathtub complies with CSA B45.5-17/IAPMO Z124-2017 standards and meets the Massachusetts Plumbing & Gas Code. Woodbridge offers a 1-year limited warranty for this product to be free of defects in material and workmanship.

Pros

  • Non-slip design ensures ASTM standards for slip resistance
  • Premium quality construction with top-quality materials
  • Gently sloping lines provide exceptional comfort
  • Easy to clean and maintain Enduraclean surface
  • Suitable for 1 or 2 persons with a maximum bearing capacity of 1000 lbs
  • Complies with CSA B45.5-17/IAPMO Z124-2017 standards and Massachusetts Plumbing & Gas Code
  • 1-year limited warranty for defects in material and workmanship

8. Empava Hydromassage Rectangular Whirlpool Bathtub

The Empava Whirlpool Tub is a premium quality acrylic bathtub that comes with a stainless-steel frame, and reinforced with fiberglass. The bathtub has an outer dimension of 71 in. W x 47 in. D x 27 in. H and the water capacity is 177 gallons. The UL certified motor is pre-installed and comes with a US standard 120V power cord. It requires an 11 amps breaker and has a 3 years limited manufacturing warranty.

The bathtub has a double-walled reinforced design that provides maximum insulation and keeps the water at its desired temperature for longer periods. The bearing capacity of the bathtub is up to 900 LBS.

The Empava Whirlpool Tub has a jet system that includes 16 water jets, 6 in the lumbar region, 6 in the body region, and 4 in the foot region. The head of the jets can be adjusted to control the flow rate and the angle of inflow. The 1.5HP water pump provides ample power to surround and soothe the entire body.

The bathtub is easy to operate, thanks to its ergonomic control knobs. The specialized showerhead has three soothing spray settings, and the 47" length stainless steel retractable hose offers flexibility.

The Empava Whirlpool Tub is easy to install, and the accessories, including the chrome polished drain, waterfall faucet, knobs, 45" length showerhead, pillow, and jets, are pre-drilled and pre-installed. The bathtub is perfect for people of all ages and genders who want to enjoy a spa-like experience in the comfort of their own home.

The rectangular design and defined lines of the Empava Whirlpool Tub complement any bathroom decor. The classic double-ended design offers comfort with its lumbar arch to support the body. The textured, slip-resistant tub floor ensures added safety.

The Empava Whirlpool Tub features 60 minutes auto shut off protection technology to prevent pump failures and ensure it works longer. The pump cannot be started if there is not enough water in the whirlpool bathtub, making it safe for all users.

Pros

  • Premium quality acrylic bathtub with a stainless-steel frame
  • UL certified motor and pre-installed US standard 120V power cord
  • 16 water jets with adjustable flow rate and angle of inflow
  • 1.5HP water pump provides ample power to surround and soothe the entire body
  • Ergonomic control knobs for easy operation
  • Accessories are pre-drilled and pre-installed for easy installation
  • Rectangular design with defined lines complements any bathroom decor
  • Textured, slip-resistant tub floor ensures added safety
  • 60 minutes auto shut off protection technology ensures longer pump life and user safety

9. Chenille Bath Mat – Soft And Absorbent

Indulge in the luxurious softness and thickness of this Chenille bath mat, made of thousands of individual polyester hairs. The super thick quality allows your toes to sink in, providing comfort and satisfaction as you step out of the shower or bathtub. The soft fluff soothes tired feet, protects toes from the cold floor, and provides excellent support.

The anti-slip bottom is made of high-quality mesh PVC material, preventing the mat from moving and slipping, providing stability as you enter and exit the bathtub or shower. This feature ensures better security for you and your family. Note that before placing the rug on the floor, the bottom should be flat and dry, as water underneath may cause slipping.

Our Chenille bath rug is highly absorbent, much more than cotton bath rugs. It uses thousands of individual fibers to quickly absorb the water on your feet, making them dry quickly. Moisture is trapped in a 1.16 inch deep pile of mats, allowing the bath rugs to dry quickly and cleanly, keeping the floor dry.

This bathroom rug is easy to clean. It can be machine washed with cold water and mild detergent, dried at low speed or hung dry, and should not be bleached. The luxury bath rug has been tested and can be machine washed and machine dried time and time again. The colors remain vibrant even after many washes.

This multipurpose bathroom rug comes in a variety of colors and sizes, making it perfect for use in the bathroom, vanity, vacation home, master bathroom, kids bathroom, or guest suite. It will be a perfect gift for family, children, parents, and lovers. Additionally, if you are not satisfied with your product, please contact us, and we are happy to provide you with the option of replacement or refund.

Pros

  • Super thick quality for luxurious softness
  • Anti-slip bottom for stability and security
  • Highly absorbent, trapping moisture in the deep pile of mats
  • Easy to clean and machine washable
  • Multipurpose use in various rooms and spaces
  • Wide range of colors and sizes to choose from
  • Option for replacement or refund if not satisfied

10. Kohler Rectangle Alcove Bath – Left Drain.

The Molded Lumbar Support Alcove Bathtub is designed to provide extra comfort while bathing. It features a slotted overflow that allows for deep soaking, and an integral apron that creates a clean, finished look. The integral flange helps prevent water from seeping behind the wall and simplifies alcove installation. The bottom surface is textured for added safety. The bathtub has a capacity of 68.0 gallons and a left drain. To complete the installation, you will need to purchase separately the K-7271 or K-7272 Clearflo slotted overflow bath drain. This bathtub is perfect for an alcove installation and is made of acrylic material.

Experience the ultimate comfort while bathing with the Molded Lumbar Support Alcove Bathtub. It features a slotted overflow that allows you to enjoy deep soaking. The integral flange helps in preventing water from seeping behind the wall and simplifies alcove installation. The bathtub has a textured bottom surface to ensure safety while bathing. It has a left drain and a capacity of 68.0 gallons. To complete the installation, you will need to purchase separately the K-7271 or K-7272 Clearflo slotted overflow bath drain. Made of acrylic material, this bathtub is perfect for an alcove installation and comes with an integral apron that creates a clean, finished look.

Get ready for a relaxing bath with the Molded Lumbar Support Alcove Bathtub. It is designed to provide extra comfort while bathing and features a slotted overflow that allows for deep soaking. The integral apron creates a clean, finished look while the integral flange helps prevent water from seeping behind the wall and simplifies alcove installation. The bathtub has a capacity of 68.0 gallons and a left drain. To complete the installation, you will need to purchase separately the K-7271 or K-7272 Clearflo slotted overflow bath drain. The bathtub is made of acrylic material and has a textured bottom surface for added safety. It is perfect for an alcove installation.

Pros

  • Molded lumbar support for extra comfort while bathing
  • Slotted overflow for deep soaking
  • Integral apron for a clean, finished look
  • Integral flange to prevent water from seeping behind the wall and simplify installation
  • Textured bottom surface for added safety
  • 68.0-gallon capacity for a comfortable and relaxing bath
  • Acrylic material for durability

Cons

  • – K-7271 or K-7272 Clearflo slotted overflow bath drain sold separately

Best Foam For Under Bathtub FAQs

Can foam be used to level a bathtub that is uneven?

Foam can be used to level a bathtub that is uneven. This is a common solution to fix the problem of having a bathtub that rocks or wobbles. Foam is a very versatile material that can be used for a variety of purposes. In this case, it can be used to create a level surface underneath the bathtub. The foam is typically sprayed into the space between the bathtub and the floor. Once it has cured, it provides a solid, level surface for the bathtub to rest on. This is a cost-effective solution that can save you from having to replace the entire bathtub. It is important to note that foam should only be used to level a bathtub that is slightly uneven. If the bathtub is severely uneven, it may be necessary to call in a professional to assess the situation and recommend the best course of action.

How much foam should be used for under a bathtub?

The amount of foam required for an under bathtub installation varies depending on the size and shape of the bathtub. However, the general rule of thumb is to have enough foam to create a solid and stable base for the tub. The foam helps to distribute the weight of the bathtub evenly and prevents any sagging or flexing that can occur over time.

To determine the right amount of foam needed, it is recommended to consult the manufacturer's instructions or seek advice from a professional plumber or contractor. They can provide you with the exact amount of foam required for the specific bathtub you are installing.

It is important to note that using too much foam can also cause problems. If the foam expands too much, it can put pressure on the bathtub and cause it to crack or warp. Therefore, it is crucial to measure the foam carefully and use only the recommended amount.

In conclusion, the amount of foam needed for under bathtub installation is dependent on the bathtub's size and shape. Consult the manufacturer's instructions or seek advice from a professional to ensure the right amount of foam is used for a stable and long-lasting installation.

Is it necessary to use foam under a bathtub during installation?

Yes, it is necessary to use foam under a bathtub during installation. The foam acts as a cushion between the bathtub and the subfloor, preventing any flexing or movement of the bathtub. This not only ensures a solid and stable installation but also helps to prevent any potential leaks or damage to the bathtub over time.

Without foam, the bathtub may shift or move during use, causing stress on the plumbing connections and potentially leading to leaks or damage. Additionally, foam also helps to insulate the bathtub, keeping the water warmer for longer periods of time.

When choosing a foam product for bathtub installation, it is important to select one that is compatible with the type of bathtub and subfloor materials being used. Most manufacturers provide specific recommendations for foam products in their installation instructions.

Overall, using foam under a bathtub during installation is an important step in ensuring a durable and long-lasting installation.

What are the benefits of using foam under a bathtub?

Foam under a bathtub provides insulation and support, which ultimately helps to increase the longevity of the bathtub. The foam acts as a cushion and helps to absorb any shock or pressure that may be caused by heavy usage. Additionally, the foam helps to keep the bathtub in place, preventing any movement or shifting that could cause damage over time.

Foam insulation can also help to maintain the temperature of the water in the bathtub, by preventing heat loss through the bottom of the tub. This can help to reduce energy costs, as less heat is required to keep the water at a comfortable temperature.

Using foam under a bathtub can also provide soundproofing benefits, reducing the amount of noise that is transmitted through the floor. This is particularly useful in multi-story buildings, where noise from one floor can disturb occupants on another.

Overall, the benefits of using foam under a bathtub include improved insulation, support, longevity, energy efficiency, and soundproofing. It is a cost-effective solution that can provide significant benefits in both residential and commercial settings.

What type of foam is recommended for under a bathtub?

The type of foam that is recommended for under a bathtub is a closed-cell foam. Closed-cell foam is durable and water-resistant, making it the ideal material for this application. It is designed to prevent water from seeping through and causing damage to the floor or subfloor. Closed-cell foam is also good at absorbing sound, which can be important in a bathroom setting. It is easy to install and can be cut to fit the space precisely. This type of foam is available in different thicknesses and densities, so it is important to choose the correct one for your particular bathtub installation. It is always recommended to consult with a professional to ensure that you are using the correct materials and to ensure that the installation is done correctly. By using the right type of foam, you can protect your bathroom from water damage and ensure that your bathtub is securely installed.

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