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If you run your finger over the rim of the sink, you can feel a noticeable transition. If the sink rim is smooth and inaccessible, it's likely an undermount sink. If the rim is prominent and you can feel a distinct "countertop-to-sink" transition line, it's a topmount sink.

A top-mount sink, also known as an overhead sink, is an installation method in which the rim of the sink is located above the countertop, typically placed directly into a pre-cut countertop opening. A flush-mount sink, on the other hand, is recessed into the countertop, with the rim completely hidden beneath the countertop, leaving only the interior of the sink visible.

For homes with specific installation requirements or those seeking a higher standard, an undermount kitchen sink is an ideal choice. However, if your kitchen requires more flexible and convenient installation, a topmount sink would be a better option.

If you're looking for an overall aesthetically pleasing kitchen with a simple, modern design and a hard surface material like quartz or granite, an undermount sink may be a better fit. If you prioritize ease of installation and budget, and your countertop may be made of wood or another material unsuitable for an undermount sink, a topmount sink may be a more ideal option.

The installation of top mount sinks is relatively simple, especially for families who need to complete kitchen renovations quickly. Compared with undermount sinks, top mount sinks do not require special treatment or cutting of the countertops, and the installation process is more direct and quick.

The easiest type of kitchen sink to replace is usually the topmount kitchen sink. This type of sink is simple to install and does not require large-scale modifications to the countertop. When disassembling, only the screws and sealant that fix the sink need to be removed.

Although the two materials are different, they have certain compatibility. The edge of the sink of top mount double sink is usually made of stainless steel, ceramic, composite materials, etc., which will not cause obvious discomfort when matched with quartz countertop.

A flushmount sink is installed by embedding the sink into the kitchen countertop. The upper edge of this sink is flush or slightly lower than the countertop surface. A top-mounted kitchen sink places the edge of the sink above the countertop, and the upper edge of the sink is usually higher than the countertop, forming a clear boundary with the countertop.

Pros of topmount kitchen sink: Easy installation and short construction period Good waterproof performance Easier maintenance Unique visual effect Easy to clean Cons of topmount kitchen sink: May cause countertop pollution Countertop is easily damaged The outer edge is more abrupt, affecting the appearance The problem of matching the size of the sink with the countertop The edge of the sink is sharp, posing a safety hazard

Topmount kitchen sink is a very popular type of sink on the market. The main feature of topmount kitchen sink is that the edge of the sink is exposed, the upper edge of the sink is directly flush with the countertop, and the junction between the sink and the countertop is fixed by fasteners such as screws.