Install undermount sink in granite countertop
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Fitting an undermount kitchen sink in a granite or stone countertop is a project that can be done yourself, although certain precautions must be taken due to the weight of the materials. The sink is supported from below by mounting clips glued under the counter.
This structure is strong enough to support the weight of the sink when filled with water. An undermount sink is as handsome as it is practical; the countertop is easier to clean and no residue can accumulate under the sink edge. An undermount sink is more complicated to install than a drop-in sink. Follow the steps carefully, and if in doubt, call a professional installer.