Drop-In Sinks
Updated February 20, 2026
Also called top-mount or self-rimming sinks. The rim sits on top of the countertop, making installation straightforward and compatible with any counter material.
Overview
Drop-in sinks (also called top-mount or self-rimming) sit in a countertop cutout with the rim resting on top of the counter surface. The easiest sink type to install and replace -- no clips, no adhesive, just drop it in the hole and connect the plumbing. The visible rim is the tradeoff: it collects water and crumbs around the edge, and the look is less streamlined than undermount. But for laminate countertops (which cannot support undermount), drop-in is the only option.
Pros & Cons
- Easy DIY installation
- Works with any countertop
- Affordable
- Rim catches debris
- Less modern look
Key Features
- Self-supporting -- rim sits on the countertop surface with no clips or adhesive needed
- Works with any countertop material including laminate, tile, solid surface, and stone
- Easiest installation and replacement of any sink type
- Available in stainless steel, cast iron, composite, and porcelain
- Rim creates a visible border that some find traditional, others find dated
Sizing & Selection
Standard kitchen drop-in sizes: 33x22 inches (most common), 25x22 (small kitchens), and 36x22 (large kitchens). Measure the base cabinet width -- the sink must fit within the cabinet. Bowl depth ranges from 8 to 10 inches. Deeper bowls hold more but may require lowering the drain plumbing.
Installation
Trace the sink outline on the countertop (template usually included). Cut the opening with a jigsaw. Apply a bead of silicone caulk around the cutout edge. Lower the sink into the opening. The rim seals against the caulk. Connect drain and supply lines from below. No clips needed for most drop-in sinks -- the weight and caulk hold it. Some models include optional clips for extra security.
Maintenance
- Clean the rim-to-countertop seam regularly -- it traps water, crumbs, and bacteria.
- Recaulk the rim seal every 2-3 years or when you see gaps.
- Stainless steel: clean with the grain using a non-abrasive cleaner.
- Cast iron/porcelain: avoid dropping heavy objects -- chips expose the iron to rust.
Buying Tips
- Stainless steel is the most popular and affordable. 18-gauge is premium, 20-gauge is standard, 22-gauge is budget (thin and loud).
- Sound-deadening pads on the underside of stainless sinks dramatically reduce noise. Worth the premium.
- If your countertop is laminate, drop-in is your only option -- laminate edges cannot support undermount weight.
- Single bowl vs double bowl: single is more versatile for large pots and sheet pans. Double is better if you hand-wash dishes frequently.
- Match the faucet hole count to your faucet. Most drop-in sinks come with 1, 3, or 4 pre-punched holes.