Undermount Sinks And Wood Countertops. An undermount sink does have a rim, but the rim is not visible because it rests up against the bottom of the counter. Drainboards are the perfect accompaniment to your undermount or apron sink.
Most undermount sinks come with these little brackets to attach it. We sold the house and moved to New Hampshire. They're not recommended for installation under plastic laminate, ceramic tile or wood tops.
Undermount sinks mount to the bottom of the countertop and are held in place by heavy-duty clips and caulk or a special adhesive.
For a laminated or solid wood countertop, the clips must be hidden.
The difference, however, is the type of Typical clips fit onto the edges of the cutout for the sink and are covered by tile. You will have to pre drill and then screw them in. Wood countertops with Waterproof Drainboards for Undermount