Models that are mounted beneath the sink can be used but they take more time involve a longer usually professional installation and are harder for a homeowner to install.
Top mount sink over granite.
Northland 15 x 15 x 7 5 8 top mount bar sink with single faucet hole.
These are less expensive than an undermount and they are easier to install.
Here are step by step instructions for installing a sink in your granite countertop with a minimum of difficulty.
Crumbs and moisture can be trapped around the edges causing it to look unsightly and become somewhat unsanitary.
An undermount sink does have a rim but the rim is not visible because it rests up against the bottom of the counter.
An overmount kitchen sink is cheaper and easier to install than an undermount kitchen sink.
The biggest issue that most homeowners have with overmounts is the lip that hangs over the granite.
Many people believe they are unsightly when used on a countertop made of high end materials such as granite and marble because they cover the edges of that material.
Granite composite sinks install similarly to other drop in sinks with clips and caulk holding the sink in place on the counter.
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Undermount sinks mount to the bottom of the countertop and are held in place by heavy duty clips and caulk or a special adhesive.
The edge of the countertop along the sink cutout is entirely exposed.
Cons of an overmount kitchen sink.