by Paul Sanders
Style and luxury can be added to any bathroom by installing a vessel sink. Two installations are popular: You can either rest the bathroom sink directly on the countertop or cut a hole in the countertop and lower the vessel down so that the sink bowl is partially recessed. Once you've installed the countertop and sink faucet, you'll be ready to install the vessel sink itself.
Place the mounting ring. A mounting ring is only necessary if you're installing an above-counter vessel sink. Recessed vessel sinks are supported directly by the countertop. Place the ring directly over the drain hole in the countertop, applying adhesive or plumber's putty as directed by the instructions that came with your vessel sink.
Lower the sink vessel. Rest the sink either on the mounting ring or into the recessed hole in your countertop. Align the vessel drain hole facing directly downward.
Caulk the edges of the sink hole. From beneath the countertop, use silicone caulk to seal the seam between the vessel sink and the edges of the countertop hole. This will keep moisture from dripping down.
Separate the drain assembly. The drain assembly that came with your vessel sink may be completely assembled. Separate the drain body from the rest of the assembly. Since each vessel sink is different, check the manual that came with your sink to keep track of how the washers, nuts and O-rings fit on the assembly. You'll be reassembling it in Step 5.
Insert the drain body. Slide the drain body down into the sink's drain hole. If the vessel sink instructions require it, apply a bead of plumber's putty around the fitting and press it firmly into place.
Reassemble the drain assembly. From underneath the vessel sink, reattach the rest of the washers and other assembly hardware to the drain body, protruding from the drain hole. Check the vessel sink instructions to be sure you assemble everything properly.
Attach the P-trap. Depending on your vessel sink design, you may be using a custom P-trap and drain fittings. Otherwise, you can attach the drain assembly to the existing P-trap, hand-tightening the connections.
Turn on the water. Release the stop valves for the hot and cold water and test the sink faucet.
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