Undermount and top mount sinks in matching marble benchtops
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Undermount or top mount?

Both can work well. The right choice depends on the look you want, the sink model, how you use the benchtop and the details that matter during fabrication.

The main difference

Where the rim sits

An undermount sink is fixed below the stone, leaving the benchtop edge visible around the bowl. A top mount sink drops into the cut-out and rests on the surface with a visible rim.

01 / UNDERMOUNT

Clean and integrated

The sink sits below the benchtop, giving the stone a continuous appearance and allowing water and crumbs to be wiped directly into the bowl.

  • Modern, streamlined finish
  • The polished stone cut-out remains visible
  • Available with different reveal details
  • Requires accurate templating, fabrication and secure support
02 / TOP MOUNT

Practical and accessible

The sink rim sits on top of the benchtop and covers the cut edge. It is often simpler to fit or replace and suits many kitchen and utility applications.

  • Visible rim protects and covers the cut-out edge
  • Often easier to install or replace
  • Works with a broad range of sink models
  • The rim creates a small raised edge on the surface
Technical comparison of top mount, flush undermount, stepped reveal and overhang undermount sink installations
Sink installation details

This reference shows the four common relationships between the stone cut-out and the sink bowl. We confirm the exact sink model and selected reveal before fabrication.

Undermount detail

Choose the reveal before cutting

Flush reveal

The finished stone edge aligns closely with the inside wall of the bowl for a precise, integrated appearance.

Positive reveal

A small section of the sink rim is visible. This makes the junction easy to see and can simplify cleaning around the edge.

Small overhang

The stone extends slightly over the bowl rim. The final allowance must suit the exact sink template, bowl shape and access for cleaning.

We confirm the selected sink model and reveal before fabrication so the cut-out, polish and mounting method work together.