The first step in the installation of an undermount kitchen sink is to have a professional cut the appropriate sized hole in your counter top. He or she will cut the right sized hole for the bowl you’ve chosen using a template. When you’re deciding what kind of bowl you want, you need to consider a number of factors. For example, do you want a double or single handle faucet? Are you going to want to include a soap dispenser? Another important thing to point out here is that with an undermount kitchen sink, the weight of the bowl is supported from underneath. Therefore, they can only be installed in substantial countertops such as granite or marble ones.
The next step is to test fit the sink you’ve chosen. First, you’ll place a 2 x 4 over the hole; right across the counter top itself. Next, you’ll clamp the bowl to that 2 x 4. That way, you’ll know right off the bat whether or not the sink bowl is fitting properly. While the bowl is clamped, you should go ahead and thread the wing nuts onto the screw heads. Mark the locations for the mounting clips, too. Remove the sink, and then drill quarter inch holes for the brass inserts prior to tapping them in. Rub the ridge with alcohol, and rub a bead of silicone sealant around it. Clamp the bowl into place.
Finally, you’re going to want to further secure the bowl. This time, tighten the screws and wing nuts fully in order to anchor the inserts. Remove the clamps, and mark the layout of the faucet holes with masking tape. Drill those holes, and let them cure overnight before you install the plumbing itself. Once you’ve installed the plumbing, you’ll be able to begin enjoying your new sink!
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