Topmount Sinks

⭐ Topmount Stainless Steel Kitchen Sinks — Durable, Easy to Install & Budget-Friendly

Topmount kitchen sinks（also called drop-in sinks）are widely used in modern and traditional kitchens because of their easy installation, strong countertop compatibility, and stable performance.
If you are looking for a cost-effective, easy-to-replace, and versatile kitchen sink option, a topmount sink is an excellent choice for most kitchen renovations.

DHKSINK provides 16 gauge stainless steel topmount sinks, ADA-friendly options, and different sizes from compact models to 36-inch topmount sinks for large kitchens.

Key Features & Benefits

Why Choose a Topmount Sink for Your Kitchen？

1. Easy DIY or Contractor Installation

Topmount sinks drop directly into the cutout and secure from above, making them ideal for quick kitchen upgrades or homeowners who don’t want complicated installations.

2. Compatible With All Countertop Materials

Unlike undermount sinks that work best with stone, topmount sinks work with:

• Laminate countertops

• Wood countertops

• Tile

• Quartz & granite
  This makes them more flexible for all kitchen types.

3. Extra Stability for Heavier Cookware

A visible rim supports the sink weight, ideal for kitchens that frequently wash large pots, woks, and cookware.

4. Affordable Without Sacrificing Performance

You can achieve premium quality using 304 stainless steel, noise-reduction pads, and brushed finishes—while keeping the budget friendly.

DHK Drop-in Kitchen Sinks Product Comparison Table

Legend & Selection Guide

✅ All models feature: SUS304 (18/8) stainless steel, 18-gauge thickness (1.2mm), 3.5" standard drain opening, Sound-dampening pads, R10-R20-radius corners for easy cleaning

DHK Topmount Sink Collection

Single Bowl Topmount Sinks

• 18-Gauge 304 Stainless Steel: 1.2mm thick construction resists dents and corrosion
• Nanocoating Finish: Hydrophobic layer repels water spots and fingerprints
• SoundGuard Undercoating: 3mm thick rubber padding reduces noise by 40%
• Standard Dimensions: Fits 36" base cabinets; 10" bowl depth

Shop Single Bowl Sinks

Double Bowl Topmount Sinks

• Equal or Offset Bowls: Choose 50/50, 60/40, or 70/30 split configurations
• Center Drain System: Maximizes usable space in both basins
• Accessory Package: Includes matching stainless steel grid protectors and basket strainers
• Commercial-Grade Build: Reinforced mounting clips support 200+ lbs

Shop Double Bowl Sinks 

Topmount vs Undermount: Which Is Right for You?

Bottom Line: Choose topmount kitchen sinks if you prioritize value, flexibility, and easy installation. Our workstation drop-in sinks bridge the gap by offering modern features without the premium price tag.

Topmount Sinks vs Undermount Sinks（Comparison Table）

Available Sizes & Options (Based on Kitchen Needs)

✔ Small Kitchens: 22–27 inch Topmount Sinks

Perfect for apartments, rental units, compact kitchens.

✔ Standard Kitchens: 28–33 inch Sinks

The most common and balanced choice.

✔ Large Kitchens: 36 inch Topmount Sinks

Ideal for families and users who wash big cookware.

✔ 16 Gauge Stainless Steel Options

Thicker and more durable, reduces dents and vibration.

✔ Sink Grates (Stainless Steel)

Protect the bowl surface and improve water drainage.

How to Choose the Right Topmount Sink (Customer Guide)?

1. Choose the Right Gauge Thickness

• 16 gauge = thicker & premium

• 18 gauge = standard & budget-friendly

2. Bowl Style

• Single Bowl: fits large cookware

• Double Bowl: multitasking (wash + rinse)

3. Look for Noise Reduction Features

• Anti-condensation coating

• Sound-deadening pads

4. Confirm Cutout Size

Topmount sinks require precise measurement to match your existing or new countertop cutout.

How to Install a Topmount Kitchen Sink?

A simplified installation overview:

1. Measure the countertop cutout

2. Apply sealant around the rim

3. Drop the sink into the opening

4. Tighten mounting clips from below

5. Install faucet & drain accessories

6. Seal edges and test for leaks

This is one of the easiest sink types for DIY homeowners.

Installation Requirements

• Cabinet Size: Minimum 24" depth, 33" width for standard models
• Countertop Cutout: Template provided; requires 1/2" radius corners
• Faucet Holes: Pre-drilled 1-4 holes (8" spread) or customizable
• Mounting Hardware: All clips and seals included—no extra purchase needed

How to Clean & Maintain a Stainless Steel Topmount Sink?

• Use mild dish soap & soft cloth

• Avoid harsh abrasive tools

• Rinse after washing acidic food

• Use stainless steel sink grates to prevent scratches
  Regular care keeps the finish bright for years.

How to Replace an Old Topmount Sink?

Steps overview:

1. Disconnect plumbing

2. Cut the silicone around edges

3. Lift the sink out from above

4. Clean the countertop surface

5. Drop in the new sink & re-seal

Topmount sinks allow quick replacement, ideal for kitchen remodels.

FAQ: Topmount Drop-In Kitchen Sinks (Topmount Sinks)

What is a topmount sink?

A topmount sink (also called a drop-in sink or self-rimming sink) is installed by resting the sink into a pre-cut hole in the countertop, with the rim sitting on top of the counter surface. The rim is exposed above the countertop, creating a visible edge that supports the sink's weight and forms a seal against water intrusion. This design works with virtually any countertop material—including laminate, wood, granite, quartz, and solid surface—because the rim protects the underlying substrate from moisture damage.

Unlike undermount sinks, which require precise cutting and sealing of the countertop edge, topmount sinks simply "drop in" from above and are secured with clips underneath, making them the most DIY-friendly installation method.

What is the opposite of a topmount sink?

The opposite of a topmount sink is an undermount sink, which is installed beneath the countertop surface, creating a seamless look with no visible rim. While topmount sinks rest on top of the counter, undermount sinks are mounted from below and require solid-surface countertops (granite, quartz, marble) because the countertop edge must be finished and exposed to water. The key difference is visibility: topmount rims are prominent and functional, while undermount sinks hide all hardware for a minimalist aesthetic.

Is a topmount sink better than an undermount sink?

There's no universal "better" choice—it depends on your priorities:

Choose a topmount sink if you value:

• Budget: Installation costs are typically $100-300 less than undermount

• DIY installation: Can be installed in 2 hours with basic tools

• Versatility: Works with laminate, tile, wood, and stone countertops

• Easy replacement: Can be swapped without disturbing the countertop

• Rental properties: Lower maintenance and simpler repairs between tenants

Choose an undermount sink if you value:

• Aesthetics: Seamless, modern look that boosts resale value

• Counter space: No rim means slightly more usable surface area

• Cleanup: Can sweep debris directly into the sink

Bottom line: For most homeowners, topmount sinks offer better overall value unless you're renovating a luxury kitchen with stone countertops where the seamless look is a priority.

What are the advantages of topmount sinks?

1. Installation Simplicity

• Install in under 2 hours without professional help—just apply caulk, drop in the sink, and tighten clips

• No need for precise countertop edge finishing or specialized support structures

2. Universal Compatibility

• Works with all countertop materials, including laminate and wood, which undermount sinks cannot use

• Ideal for retrofits and quick kitchen updates

3. Cost Efficiency

• Sink units are 20-40% cheaper than comparable undermount models

• Saves $200-500 on professional installation fees

4. Maintenance & Repair

• Exposed rim makes it easy to inspect and reseal if needed

• Replacement takes 30 minutes—just disconnect plumbing, remove clips, and lift out

• No risk of countertop water damage from failed seals

5. Functional Design

• The raised rim prevents water from spilling onto the floor, even when the sink overflows

• Provides extra support for heavy cast iron or fireclay sinks

What are the disadvantages of topmount sinks?

1. Visible Rim

• The exposed lip can collect dirt, grime, and water stains at the seam

• Creates a less seamless, more traditional appearance that may look dated in minimalist kitchens

2. Cleaning Challenges

• Cannot sweep crumbs or water directly into the sink—the rim acts as a barrier

• Requires regular wiping of the seam to prevent buildup

3. Countertop Space

• The rim occupies 1-2 inches of countertop space around the perimeter

• May interfere with very small countertop areas in compact kitchens

4. Aesthetic Limitations

• In sleek, modern kitchens, the prominent rim can appear "abrupt" and conflict with clean lines

• Less "premium" appearance compared to undermount sinks

5. Potential for Damage

• The exposed edge can be scratched or chipped by hard objects

• Wooden or soft countertops may show wear where the rim contacts the surface

Are drop-in sinks outdated?

No, drop-in sinks are not outdated—they remain a practical, budget-friendly choice for millions of kitchens. While undermount sinks have gained popularity in high-end renovations for their seamless look, drop-in sinks offer advantages that keep them relevant:

• Market reality: They dominate rental properties, multi-family housing, and budget-conscious renovations

• Material versatility: They're the only option for laminate countertops, which still represent a significant market share

• Modern designs: Contemporary drop-in sinks now feature tight-radius corners, workstation ledges, and sleeker rims that minimize the "dated" look

• Bathroom application: Drop-in bathroom sinks are still widely used and considered stylish

Trend perspective: Drop-in sinks are experiencing a resurgence as "practical luxury"—offering professional features like workstation accessories without the premium price.

Can I install a topmount sink without clips?

Yes, but it depends on the sink material and weight:

When clips are optional:

• Heavy cast iron or fireclay sinks: Their weight (80-150 lbs) creates a stable seal with just silicone caulk

• Some stainless models: Thick-gauge (16-18 gauge) sinks may be stable enough without clips if properly sealed

When clips are required:

• Standard stainless steel sinks: Need clips to prevent shifting and maintain the watertight seal

• Laminate countertops: Clips prevent the sink from pulling away from the substrate over time

Best practice: Always use clips unless the manufacturer explicitly states they're unnecessary. Clips provide:

• Safety: Prevents the sink from dropping if caulk fails

• Stability: Maintains even pressure on the seal

• Code compliance: Most building codes require mechanical fastening

Can topmount sinks be undermounted?

No, you cannot undermount a standard topmount sink—the designs are incompatible:

Structural issues:

• Topmount sinks have a rolled rim designed to sit on top of the counter; this rim is too thick and uneven to create a proper undermount seal

• The bowl depth is calibrated for top-mount installation; flipping it upside down would position the drain too high relative to the plumbing

Aesthetic problems:

• Exposed mounting holes and unfinished edges would be visible beneath the countertop

• The sink's exterior finish is not designed for visibility

Exception: Some manufacturers produce dual-mount sinks that can be installed either way, but these are specifically engineered with reversible designs and flat edges. Standard topmount sinks lack this feature.

How long do topmount sinks last?

A quality stainless steel topmount sink lasts 30-50 years with proper care. Lifespan depends on:

Material quality:

• 304-grade stainless steel (18/8 chromium-nickel) resists rust and corrosion indefinitely

• 16-18 gauge thickness: Thicker steel prevents dents and extends life

• Poor-quality 201-grade steel: May show corrosion within 10-15 years

Maintenance factors:

• Daily cleaning: Rinse and wipe dry to prevent mineral buildup

• Avoid harsh chemicals: Chlorine bleach can pit the surface; use mild cleaners

• Prevent scratches: Use sink grids to protect from heavy pots

Environmental factors:

• Hard water: Can cause mineral deposits that dull the finish over time

• Salt air: Coastal environments require higher-grade steel (316 marine grade)

Replacement indicators: Replace when you see deep rust spots that won't clean, cracks in the steel, or widespread pitting that compromises hygiene.

How do I know if my sink is drop-in or undermount?

Visual inspection method:

Drop-in/topmount sink:

• Visible rim: You'll see a 1-2 inch lip resting on the countertop surface

• Top-down installation: The sink edge sits above the counter

• Clip visibility: Look underneath—metal clips secure the rim to the countertop

• Caulk line: A bead of caulk is visible where the rim meets the counter

Undermount sink:

• Seamless edge: No visible rim; the sink appears to hang below the countertop

• Countertop overhang: The countertop material extends over the sink edge

• Under-counter clips: Mounting hardware is visible only from below

• Silicone seal: A thin silicone bead runs along the inside edge where sink meets counter

Quick test: Run your hand from the countertop into the sink. If you feel a lip, it's drop-in. If it's smooth, it's undermount.

Can I replace an undermount sink with a drop-in?

Yes, and it's often easier than replacing with another undermount sink:

Process:

1. Remove the undermount sink: Carefully cut the silicone seal and detach the mounting clips from underneath

2. Assess the countertop: The existing cutout is likely larger than needed for a drop-in

3. Install support: Add wood blocking around the cutout perimeter to support the drop-in rim

4. Drop in the new sink: Apply silicone caulk, set the sink in place, and secure with clips

Key considerations:

• Countertop material: Works best with stone or solid surface; laminate may need reinforcement

• Cutout size: Measure carefully—drop-ins need a slightly smaller opening than undermounts

• Plumbing: The drain position may need adjustment depending on bowl depth

Professional help recommended if the countertop edge is damaged during undermount removal or if structural reinforcement is needed.

Can you use Clorox on a stainless steel topmount sink?

Use chlorine bleach sparingly and with caution:

Safe usage:

• Dilute heavily: Mix 1 tablespoon of bleach per gallon of water

• Short contact: Apply for 5 minutes maximum, then rinse thoroughly

• Occasional use: Only for disinfecting, not regular cleaning

Risks of frequent bleach use:

• Pitting: Chloride ions attack stainless steel, creating microscopic holes

• Corrosion: Breaks down the protective chromium oxide layer

• Discoloration: Can cause yellowing or rainbow-like stains

Better alternatives:

• Daily cleaning: Mild dish soap and warm water

• Disinfecting: White vinegar (1:1 with water) or hydrogen peroxide

• Stain removal: Baking soda paste with water

• Mineral deposits: Club soda or lemon juice

If you must use bleach: Rinse immediately and dry completely to minimize damage.

What type of kitchen sink is easiest to keep clean?

Stainless steel topmount sinks are the easiest to clean and maintain:

Why stainless steel wins:

• Non-porous surface: Bacteria and stains can't penetrate

• Smooth finish: Brushed or satin finishes hide water spots while remaining wipeable

• Heat resistant: Handles boiling water without damage

• Self-sanitizing: Dry surface prevents bacterial growth

Cleaning routine:

1. Daily: Rinse with hot water, wipe with microfiber cloth

2. Weekly: Clean with mild dish soap and soft sponge

3. Monthly: Remove mineral deposits with white vinegar

4. As needed: Use Bar Keepers Friend for stubborn stains

Color matters:

• Silver stainless steel: Shows fingerprints but easiest to sanitize

• Black granite composite: Hides stains but shows water spots and scratches

• White ceramic: Shows every stain but bleach-safe

Workstation sinks: The integrated ledges can collect debris, but the accessories (cutting boards, colanders) are removable for easy cleaning.

How does a topmount sink work?

The mechanics of a topmount sink are elegantly simple:

1. Weight Distribution: The sink's weight is borne by the rim that rests on the countertop, not by the cabinet below. This allows installation on virtually any stable surface.

2. Sealing System: A continuous bead of silicone caulk between the rim and countertop creates a watertight barrier that prevents spills from seeping underneath.

3. Clamping Mechanism: Metal clips screwed into the countertop underside pull the sink upward, ensuring constant pressure on the seal and preventing movement during use.

4. Drainage: Water flows by gravity to the centered drain opening. The raised rim contains overflow, directing it into the sink basin rather than onto the floor.

5. Accessibility: Because the entire sink is accessible from above, all components—faucet, soap dispenser, sprayer—can be serviced without countertop removal.

Installation workflow: Countertop cutout → Caulk applied to rim → Sink lowered into hole → Clips tightened from below → Excess caulk wiped → Plumbing connected → Ready to use in under 2 hours.