What Is the Difference Between a Top-Mount Sink and an Under-Mount Sink?

When choosing a sink for a new kitchen or remodel, there is more than one alternative available.


The two known options are either a top-mount or under-mount sink. Both types have pros and cons. .

A top-mount sink is one that is installed on top of a countertop. A portion of the sink, called a lip, overlaps the countertop to provide a covered edge.


This type of sink is set up below the actual countertop, yielding a smoother finish. There are no extra grooves or crevices that will trap dirt and debris.


An under-mount sinks gives a cleaner look. It allows the countertop selection to be showcased and functions better during cleanup.


Top-mount sinks simply fit into a cutout already made in the countertop, and a faucet can easily be installed afterward. Under-mount sinks require additional support by a brace or frame, because they are positioned underneath the countertop; the placement of a faucet has to be secured underneath as well, hindered by a small amount of working space.


Under-mount sinks tend to be more expensive, because many are custom built. and the labor is much more extensive than a top-mount installation. Under-mount sinks are typically used in kitchens with natural stone countertops; therefore, the cost of granite or marble is likely to be reciprocal in the selection of the sink.

About the Author

Scarlett Carlson began writing professionally in 2000 and has had material published with the National Library of Poetry. Carlson is pursuing a Bachelor's degree in sociology and also holds an Associate degree in arts and science. Carlson's previous experience as a nurse's aide and her love of fashion and cosmetology influence her writings.