What are the Standard Kitchen Sink Sizes for Undermount?

When planning a kitchen upgrade or remodel, one of the most important decisions is selecting the perfect sink. Undermount sinks create a seamless transition from the countertop to sink basin for a modern, sleek look. But with so many size options available, how do you determine what dimensions are best for your space?

We'll discuss common width and length configurations, dimensions for single vs double bowl sinks, and recommendations based on factors like kitchen size, workflow, and number of users. Read on for a comprehensive guide on selecting the ideal undermount kitchen sink size.

Common Undermount Kitchen Sink Dimensions

Undermount sinks come in a range of sizes to suit small to large kitchens. Most models are available in width options starting around 18 inches up to 36 inches or larger for extra-large sinks. Here are some of the most popular kitchen sink size options for undermount installation:

Standard Widths

• 30-inch: Accommodates larger pots and pans for washing; fits in most standard base cabinets.
• 33-inch: Offers more room for prep and cleaning; great for larger families.
• 36-inch: Maximizes workspace for busy cooks; ideal for large gatherings.

Standard Lengths

• 18-inch: Compact length to fit small spaces.
• 21-inch: More room for stacking dishes and pans.
• 24-inch: Common minimum length for double bowl sinks.

Depth Dimensions

Most undermount kitchen sinks have a standard depth around 10 inches, which accommodates larger pots and provides ample washing space. Deeper models around 12 inches are also available for larger items and bigger batches of dishes.

Sink Size Recommendations

Beyond the standard sink sizing options, it's important to consider what dimensions make the most sense for your kitchen's layout and functionality. Here are some tips on selecting the right size based on your needs:

Consider Existing Cabinetry

Measure inside your existing base cabinetry to determine the maximum dimensions for an undermount sink. Most cabinets have an opening of 36 inches or smaller. Make sure to account for any pipes or wires along the walls as well.

Understand Your Kitchen Work Triangle

The kitchen work triangle connecting the sink, stove and refrigerator should have a total perimeter of 26 feet or less. Make sure your sink size complements efficient food prep and workflow.

Accommodate Kitchen Activities

Do you mainly wash dishes by hand or prefer a dishwasher? Do you frequently wash large pots and pans? This impacts your ideal sink size. Multitaskers may prefer a double bowl, while avid entertainers need larger single bowls.

Consider Family Size

Will multiple people be using the kitchen sink at once? How often do you wash dishes? Busy families may need more generous dimensions for simultaneous access. Single occupants can often size down.

Choosing Single vs. Double Bowl Undermount

In addition to overall width and length, selecting between a single vs double bowl undermount sink is an important consideration. Here's an overview of how to decide:

Benefits of a Single Bowl

• Easier to install and access plumbing.
• Simple cleanup with more open basin space.
• Fits smaller countertops and sink bases.
• Typically lower cost option.

Benefits of a Double Bowl

• Allows multitasking between bowls.
• Adds workspace on either side.
• Keeps dirty and clean dishes separate.
• Comes in larger overall sizes.

How to Measure for an Undermount Kitchen Sink

Once you've determined the right sink configuration and dimensions for your needs, accurately measuring your existing space is crucial for proper undermount installation. Here are some tips on how to size your countertop and cabinetry:

Measure Countertop Cutout

The countertop cutout size should match the dimensions of your selected sink basin within an inch. Account for the sink's corners and edges in your measurements. Make sure to measure the exact position of the cutout area rather than the total countertop size.

Check Cabinet Dimensions

Confirm that the sink basin will actually fit inside your base cabinetry once installed. Remember to account for any shelving, drawers or plumbing that may impede sink placement. Also ensure proper clearance is available for sink accessories like soap dispensers and filtration.

Consider Drain and Faucet Locations

The drain and water supply line locations may influence how far the sink can be moved back and centered under the counter. Try test fitting your sink or use the provided template to ensure proper alignment.

Installing an Undermount Kitchen Sink

Once you've selected the right size and measurements, it's time for installation. Most sinks include all necessary hardware and accessories for a smooth undermount application. Here are some best practices to follow:

Create Countertop Cutout

• Use the sink template for an accurate cutout guide.
• Cut slowly with a specialty circular saw and custom jig.
• Smooth and polish cut edges with sandpaper.

Secure the Undermount Sink

• Apply sealant or adhesive around sink rim and cabinet edge.
• Position and attach sink clips or mounting brackets.
• Alternatively, adhere self-rimming edge directly to counter.

Finish Plumbing Connections

• Hook up p-traps, supply lines and stoppers.
• Verify proper drainage without leaks or clogs.
• Caulk along any gaps between sink and counter.

Caring for an Undermount Kitchen Sink

With regular cleaning and preventative maintenance, an undermount kitchen sink should provide years of reliable service. Here are some care tips to help keep your sink protected and damage-free over time:

Rinse After Each Use

Make a habit of thoroughly rinsing food debris after washing dishes, scrubbing pots and emptying strainers. This prevents buildup and clogging issues.

Clean with Baking Soda and Vinegar

For mineral deposits and stains, create a paste from baking soda and vinegar. Let sit for 5 minutes before scrubbing and rinsing clean.

Use a Sink Grid and Strainer

Adding a wire grid helps protect the sink bottom from scratches when washing pots or dropping utensils. Using the drain strainer catches food scraps.

Avoid Abrasive Cleaners and Pads

Harsh chemical cleaners and scouring pads can damage stainless steel and specialty sink finishes over time. Use a gentle dish soap and soft sponge for regular upkeep.

Take your time to determine what's best for your family. Measure your existing space carefully while keeping in mind how you use your kitchen for cooking and cleaning. This ensures you select durable dimensions that provide the functionality you desire.