Compare sink rim placement, cutout requirements, fixing hardware and cabinet clearance before choosing a mounting style.
A top-mount sink drops into the counter from above, with its rim covering the cutout. An undermount sink is secured below the counter, leaving the cutout edge visible and allowing crumbs to be swept into the bowl. Confirm worktop material, edge finishing and mounting with the fabricator.
Sink mounting cross-sections
Blue indicates the sink and beige indicates the worktop. Drawings are not to scale. Use the selected model’s installation drawing for cutout and fixing details.
Request the cutout drawing for the exact model
Two sinks with the same outer size may require different cutouts, corner radii or clip positions. For an undermount sink, agree how much of the rim, if any, will be visible. Have the installer check the manufacturer’s template before machining the worktop.
Measure cabinet clearance as well as counter space
Show cabinet rails, mounting hardware, bowl depth, the drain and the trap on the drawing. Add any drawers, filters or disposers. For a volume project, fit a sample before releasing the cutout drawing for the full order.
Browse the sink catalog and request the specifications and mounting information for the chosen model.