When upgrading or renovating your bathroom, choosing the right undermount bathroom sink is essential. An undermount sink offers a sleek and modern look while maximizing counter space.
In this guide, we’ll review some of the best options available and discuss the factors you should consider when selecting the perfect sink for your bathroom.
What Is an Undermount Bathroom Sink?
An undermount sink is installed beneath the countertop, providing a seamless appearance. Unlike drop-in sinks, there is no exposed rim, which makes cleaning easier and contributes to a minimalist design.
Top 5 Best Undermount Bathroom Sink Review
1. Kohler K-2209-0 Caxton Undermount Bathroom Sink
- Oval basin with unglazed underside.
- Overflow drain.
- Vitreous china.
- No faucet holes; requires wall-or counter-mount faucet.
- Undermount.
The Kohler Caxton Oval 15″ x 12″ Undermount Bathroom Sink is a compact, elegant option that fits seamlessly into a variety of bathroom designs. Known for its sleek appearance and timeless oval shape, this sink is made from vitreous china and offers durability and an easy-to-clean surface.
Kohler’s reputation for high-quality bathroom fixtures is reflected in the craftsmanship and design of this undermount sink, making it a popular choice for homeowners seeking a functional and stylish sink for small or medium-sized bathrooms.
Key Features:
- Material: Vitreous china
- Dimensions: 15″ x 12″
- Installation Type: Undermount
- Shape: Oval
- Color: White
Pros:
- Sleek, Modern Design: The oval shape and clean lines give this sink a modern look that works well in both contemporary and traditional bathrooms.
- Durable Material: Made from vitreous china, the sink is resistant to scratches, stains, and chips, ensuring it maintains its beauty over time.
- Easy to Clean: With its smooth surface and undermount design, cleaning around the sink is simple, as there are no visible edges or rims.
- Compact Size: Ideal for smaller bathrooms or powder rooms, this 15″ x 12″ size fits well into tighter spaces while still offering sufficient basin depth for practical use.
- Kohler Quality: Kohler is known for producing high-quality bathroom fixtures, and the Caxton sink lives up to that reputation with its robust construction and reliable performance.
Cons:
- No Overflow: This model does not include an overflow hole, which could be a downside for those concerned about water spilling over.
- Smaller Size: While compact size is a pro for small spaces, it may be limiting for larger bathrooms or those seeking more counter space around the basin.
- Installation: As with most undermount sinks, professional installation may be required for a seamless fit, adding to the overall cost.
The Kohler Caxton Oval 15″ x 12″ Undermount Bathroom Sink is an excellent choice for those who prioritize sleek design and easy maintenance in a smaller bathroom or powder room. Its durable vitreous china material and clean, compact design make it a stylish and practical addition.
However, the lack of an overflow and its smaller size might be drawbacks for some. Overall, it’s a high-quality sink that delivers on both aesthetics and functionality, especially for tight spaces.
2. Nantucket Sinks UM-13×10-W Oval Undermount Vanity Sink
- Compact Size Ideal for Small Spaces
- 1.5" Drain Opening with Overflow
- Crafted from Vitreous China
- Designed to Undermount to Solid Surface Counter
- Exterior Dimensions- 15 x 12.125 inches, Interior Dimensions-13 x 10.125 inches. Bowl Depth-6.125 inches
The Nantucket Sinks UM-13×10-W Oval Ceramic Undermount Vanity Sink is a compact, space-saving sink designed for smaller vanities and bathrooms. With its classic oval shape and crisp white finish, this undermount sink blends well with a variety of bathroom styles, offering a clean and polished look.
Made from durable ceramic, it promises longevity and easy maintenance, making it a practical option for homeowners who need a small but functional sink.
Key Features:
- Material: Ceramic
- Dimensions: 13″ x 10″
- Installation Type: Undermount
- Shape: Oval
- Color: White
Pros:
- Compact Size: Perfect for small bathrooms or powder rooms, the 13″ x 10″ dimensions make it ideal for tight spaces without compromising on functionality.
- Durable Ceramic Construction: The ceramic material is sturdy, long-lasting, and resistant to everyday wear, such as scratches and stains.
- Classic Aesthetic: The oval shape and white finish provide a timeless, versatile look that can complement a range of bathroom designs, from modern to traditional.
- Easy to Clean: The smooth ceramic surface is easy to wipe down, while the undermount installation eliminates visible edges, making cleaning around the sink easier.
- Affordable: Compared to other undermount sinks, the Nantucket Sinks UM-13×10-W is relatively budget-friendly, offering a great balance of quality and price.
Cons:
- Limited Size: While great for small spaces, this sink may feel too small for larger bathrooms or for users who prefer more countertop space around the basin.
- No Overflow Drain: This sink lacks an overflow hole, which could be a concern for those who want an added safeguard against overfilling.
- Depth: Some users may find the depth of the basin to be on the shallower side, which might not be ideal for more demanding use.
The Nantucket Sinks UM-13×10-W Oval Ceramic Undermount Vanity Sink is an excellent option for smaller bathrooms, offering a compact and classic design with durable ceramic construction. It’s easy to clean and fits well into tight spaces, but its smaller size and lack of an overflow may not be ideal for every user.
Overall, it’s a stylish and practical choice, particularly for powder rooms or bathrooms where space is limited.
3. Kohler K-2356-8-0 Archer Sink
- Self-rimming installation
- Constructed of vitreous china
- 22-5/8"L x 19-7/16"H
- 8" centers
- Complements Archer collection of products
The Archer Drop-In Bathroom Sink is a stylish and versatile addition to any bathroom. With its clean lines and subtle curves, it complements a variety of bathroom styles, from traditional to contemporary. The 8″ widespread faucet holes allow for a more customized faucet setup, providing flexibility in design.
The sink’s drop-in installation ensures that it is easy to install while offering a polished look with a subtle rim. Its white finish adds a fresh, clean touch to your bathroom space.
Key Features:
- Material: Vitreous China
- Dimensions: 19″ x 14″ (approx.)
- Installation Type: Drop-in
- Faucet Holes: 8″ widespread
- Color: White
- Style: Archer series, known for its elegant and simple design.
Pros:
- Easy Installation: The drop-in design makes it straightforward to install, even for those who may be doing a DIY bathroom project.
- Customizable Faucet Setup: With 8″ widespread faucet holes, this sink gives you the freedom to choose from a variety of faucet styles, whether you prefer modern or classic fixtures.
- Elegant Design: The subtle curves and clean lines give the Archer sink a timeless look that blends well with a wide range of bathroom aesthetics.
- Durable Vitreous China: Made from high-quality vitreous china, the sink is durable and resistant to stains and scratches, ensuring it retains its fresh appearance over time.
- Spacious Basin: The wide and deep basin provides plenty of space for daily use, making it both practical and aesthetically pleasing.
Cons:
- Visible Rim: While the drop-in installation is easy, the rim can be visible above the countertop, which might not appeal to those who prefer a more seamless, undermount look.
- Limited Color Options: The white finish is classic, but it may not suit those looking for more color variety to match their unique bathroom decor.
- Faucet Holes Pre-Drilled: While the 8″ widespread faucet holes are versatile, they may not work for those who want a single-hole or closer-spread faucet option.
The Archer Drop-In Bathroom Sink with 8″ Widespread Faucet Holes is a great combination of style and practicality. Its elegant design, paired with easy installation and customizable faucet options, makes it a top choice for homeowners looking for a sink that fits both traditional and modern bathroom styles.
The high-quality vitreous china ensures durability, though the visible rim and limited color options may not suit everyone’s taste. Overall, it’s a well-rounded option for those who want a classic yet versatile bathroom sink.
4. KINGSMAN 20.9 Inch Rectangle Bathroom Sink
- Classic Rectangle shape creates timeless design in a guest bath, master bath or powder room
- Easy-to-clean polished surface with seamless undermount installation with 24” Minimum Cabinet Size
- Exterior Size: 20.9” x 14.75” x 8” Deep | Interior Size: 18.75” x 12.25” x 7.5”
- Standard 1.75 inch drain opening works with pull-up & pop-up drains with overflow
- Certified and listed by cUPC with Liftetime warranty
The KINGSMAN 20.9 Inch Rectangle Undermount Bathroom Sink is designed for those looking for a durable, minimalist sink that blends seamlessly into any vanity. Its clean, rectangular shape offers a modern aesthetic, while the vitreous ceramic material ensures long-lasting durability.
The pure white finish adds a fresh, sleek look to any bathroom and complements various countertop materials, such as granite, marble, and quartz. The undermount design eliminates the visible rim, making cleaning easier and providing a smooth, sleek transition from countertop to sink.
Key Features:
- Material: Vitreous Ceramic
- Dimensions: 20.9″ x 14.6″ x 7.5″
- Installation Type: Undermount
- Color: Pure White
- Shape: Rectangle
- Overflow Drain: Yes
Pros:
- Modern Design: The rectangular shape gives this sink a modern, sleek look that is perfect for contemporary bathroom designs.
- Durable Material: Made from high-quality vitreous ceramic, this sink is resistant to scratches, chips, and stains, ensuring a long lifespan.
- Easy to Clean: The undermount installation eliminates the visible rim, making it easier to wipe down countertops and keep the sink area clean.
- Spacious Basin: With its rectangular design and deep basin, the sink offers plenty of room for daily use, making it both functional and aesthetically pleasing.
- Overflow Protection: The built-in overflow drain ensures that water won’t spill over the edges, providing an added safety feature.
Cons:
- No Faucet Holes: As an undermount sink, there are no pre-drilled faucet holes, meaning you’ll need a countertop-mounted faucet, which could limit design options if your countertop isn’t already prepared for it.
- Installation: Undermount sinks generally require professional installation, which can add to the overall cost of your bathroom renovation project.
- Rectangular Design: While sleek and modern, some users may prefer a more traditional oval or round sink shape depending on their bathroom style.
The KINGSMAN 20.9 Inch Durable Rectangle Undermount Vitreous Ceramic Bathroom Sink is an excellent choice for those who want a modern, sleek, and durable sink. Its pure white finish and rectangular design fit beautifully into contemporary bathroom spaces. While the undermount installation offers a smooth and easy-to-clean surface, it may require professional installation, adding to the cost.
The lack of faucet holes gives more flexibility with countertop-mounted faucets, though it might limit options for certain setups. Overall, it’s a fantastic option for those looking for a high-quality, long-lasting, and stylish bathroom sink.
5. Kraus KCU-251 Bathroom Undermount Sink:
- GREAT VALUE: A versatile sink made from high-quality ceramic that’s extremely resistant to scratches and stains, and will not fade over time
- EASY TO CLEAN: Smooth non-porous surface with a premium baked-on glaze for a high-gloss finish that’s easy to keep clean
- INSTALLATION-READY: All mounting hardware included for your convenience – LIFETIME LIMITED WARRANTY and customer service that puts you first
- Undermount Installation creates a seamless transition between countertop and sink
- Dimensions: 23 1/4 in. L x 16 1/2 in. W; Standard 1.75 in. drain opening compatible with pop-up drain with overflow – NOTE: Each sink may have a 3% dimension tolerance. Please measure the sink prior to installation.
The KRAUS Elavo 23-inch Rectangular Undermount Bathroom Sink (KCU-251) brings a sleek and modern aesthetic to any bathroom. This sink is crafted from durable white porcelain ceramic, providing both strength and beauty. Its clean lines, rectangular shape, and undermount design make it an ideal choice for contemporary bathroom designs, while the built-in overflow helps prevent water from spilling over.
With a generous 23-inch width, the sink offers ample space for daily washing routines.
Key Features:
- Material: White Porcelain Ceramic
- Dimensions: 23″ x 15.75″ x 7.13″
- Installation Type: Undermount
- Shape: Rectangular
- Overflow Drain: Yes
- Compatible with most standard bathroom vanities
Pros:
- Modern Design: The rectangular shape and sleek lines make this sink a perfect fit for modern and contemporary bathroom designs.
- Durable Material: Made from high-quality white porcelain ceramic, the sink is highly resistant to stains, scratches, and impact, ensuring long-term durability.
- Generous Size: At 23 inches wide, the sink offers plenty of space for handwashing and other bathroom tasks, enhancing user comfort.
- Overflow Protection: The built-in overflow prevents accidental spills, offering added security and peace of mind.
- Smooth Undermount Installation: The undermount design creates a seamless transition between the sink and countertop, making cleaning easy and giving the bathroom a refined, sleek appearance.
Cons:
- Requires Professional Installation: Like many undermount sinks, installation can be tricky and may require professional help, increasing the overall cost of the sink.
- Faucet Not Included: The sink does not come with a faucet or pre-drilled holes, so you’ll need to purchase and install a countertop-mounted faucet separately.
- Maintenance: While porcelain is durable, it may require regular cleaning to maintain its shine and avoid the buildup of mineral deposits or soap residue.
The KRAUS Elavo 23-inch Rectangular Undermount White Porcelain Ceramic Bathroom Sink is a solid choice for anyone looking to elevate the design of their bathroom with a modern, sleek, and durable sink. Its clean lines, high-quality porcelain construction, and ample size make it a practical and stylish option.
However, the need for professional installation and a separate faucet may add to the overall expense. Despite that, its durability, ease of cleaning, and aesthetic appeal make it an excellent investment for contemporary bathroom spaces.
Undermount Bathroom Sink Buyer’s Guide
Choosing the right undermount bathroom sink can significantly impact the functionality and aesthetics of your bathroom. Unlike traditional drop-in sinks, undermount sinks are mounted beneath the countertop, providing a seamless look and making countertop cleaning easier. In this buyer’s guide, we’ll walk you through key factors to consider when purchasing an undermount bathroom sink.
1. Material Options
Undermount sinks come in various materials, each offering unique benefits in terms of durability, appearance, and maintenance.
- Porcelain/Ceramic: The most common material for bathroom sinks, porcelain is both durable and aesthetically pleasing. It’s easy to clean, but it can chip or stain over time if not properly maintained.
- Stainless Steel: Less common in bathrooms but popular in modern designs, stainless steel is highly durable and resistant to stains. However, it may show water spots or scratches.
- Cast Iron: These sinks are coated with enamel and provide a classic, durable look. They are heavy, so make sure your countertop and cabinetry can support the weight.
- Stone (Marble, Granite): Stone sinks offer a luxury feel but require more maintenance. Regular sealing is necessary to prevent staining.
- Glass: A modern and stylish option, glass sinks are easy to clean but can be more fragile than other materials.
2. Size and Shape
The size and shape of your undermount sink should complement the bathroom layout and your countertop.
- Rectangular Sinks: A popular option for modern bathrooms, rectangular sinks offer a sleek, spacious look.
- Oval and Round Sinks: These shapes give a more traditional or classic aesthetic and are space-efficient for smaller countertops.
- Double Sinks: Ideal for shared or master bathrooms, double undermount sinks provide ample space for two users, but they require a larger vanity.
3. Countertop Compatibility
Since undermount sinks are installed beneath the countertop, it’s essential to ensure that your countertop material is compatible.
- Solid Surfaces: Countertops made of stone (granite, marble, quartz) or solid surfaces are best suited for undermount sinks. These materials can withstand moisture and provide the necessary support.
- Laminate and Tile: These materials are not ideal for undermount sinks because they may not provide a waterproof seal between the countertop and sink.
4. Installation Considerations
Undermount sinks require professional installation to ensure proper sealing and support.
- Mounting Clips and Brackets: These are used to secure the sink to the underside of the countertop, ensuring stability.
- Sealing: A waterproof sealant is applied around the edges to prevent water from seeping between the sink and the countertop.
- Drain Position: Consider the placement of the drain and plumbing to avoid unnecessary adjustments during installation.
5. Faucet Compatibility
Most undermount sinks don’t come with pre-drilled holes for faucets, so you’ll need to ensure your countertop has the correct holes for your chosen faucet type.
- Widespread Faucets: These faucets require three separate holes (for the handles and spout) and offer a more traditional look.
- Single-Hole Faucets: A modern choice, single-hole faucets take up less space and are easier to install.
6. Overflow Option
Check if the sink has an overflow feature, which helps prevent the sink from overfilling by draining excess water. Not all undermount sinks come with this feature, so if it’s essential to you, verify before purchasing.
7. Style and Design
The design of your sink should complement your bathroom decor.
- Modern/Contemporary: Rectangular sinks with clean, sharp lines fit modern bathrooms well.
- Traditional: Round or oval sinks with a polished or vintage finish suit traditional or rustic bathroom styles.
- Transitional: A mix of modern and traditional, these sinks balance sleek designs with classic finishes.
8. Budget
Undermount sinks vary widely in price depending on the material, brand, and size. Ceramic sinks tend to be the most affordable, while stone and glass options can be more expensive. Don’t forget to factor in installation costs, which can add to your budget.
9. Maintenance
Each material has different maintenance requirements. Porcelain and ceramic are relatively low-maintenance, while stone sinks require regular sealing. Glass and stainless steel sinks need to be cleaned frequently to avoid water spots or scratches.
Conclusion
When selecting an undermount bathroom sink, consider the material, size, style, and compatibility with your countertop and plumbing. A well-chosen undermount sink can enhance both the functionality and the aesthetics of your bathroom, offering a clean, seamless look and practical performance. Ensure that you balance design preferences with the practicality of maintenance and installation to make the best choice for your bathroom.