What You'll Need
Damp cloth
Silicone caulk
Utility knife
Putty knife
Bucket
Adjustable wrench
Pliers
Screwdriver
Wood clamp
2 pieces of wood
New sink
Manufacturer's instructions
A friend to help lift the sink
Step 1: Check Your Plumbing
Before you begin the installation process, check the quality of your supply pipes and drainpipes. If they are rusted, you will need new ones.
Step 2: Turn Off and Disconnect Water Supply
Cut your water supply using the shutoff valves underneath the sink. To bleed water pressure off the lines, open your sink faucet and let the water run until it turns to a slow drip. Use an adjustable wrench to disconnect the water supply tubes under the sink, keeping a bucket on hand to catch any excess water. If you have agarbage disposal, unplug it, and then locate the circuit breaker and turn off the power.
Step 3: Remove the P Trap and Any Other Connections
Use pliers to loosen the nut attaching the P trap (the U-shaped part of the drainpipe) to your sink. Pull the P trap off, again using a bucket to catch any excess water. If you have adishwasher, disconnect the drain line using your pliers. If you have a garbage disposal, consult the manufacturer's instructions for removal.
Step 4: Remove the Sink
Use a utility knife to remove the sealant or caulk where your sink meets your countertop. Unscrew the clips under the countertop that are holding your sink in place. Have a friend help hold the sink in place while you do this, so it doesn't fall on you. Carefully remove your sink from the countertop and cut away any remaining caulk.
Step 5: Install New Sink
Attach the mounting clips to your new sink according to the manufacturer's instructions. Apply a bead of silicone caulk along the rim of the new sink. Move your new sink into the cabinet and raise it into place. Wipe away any excess silicone with a damp cloth.
To keep your sink stable while the caulk dries and while you install the mounting clips, we recommend using either a wood clamp or wood wedge to keep the sink in place. If you are using a wood clamp, lay a piece of wood horizontally across your sink. To avoid scratching your countertops, lay a towel under the wood. Then, place one end of a wood clamp through the drain hole. Place another piece of wood between the bottom of the sink and the clamp. Tighten the clamp. If you don’t have a wood clamp, you can also use a piece of wood (make sure it is the right length!) that can be wedged between the bottom of the sink and the floor of the vanity to act as a brace. Keep the wood clamp or wedge in place for 24 hours while it dries.
Once the clamp or wedge is in place, attach the mounting brackets and clips to the underside of your sink. This may require caulk or a drill.
Step 6: Install Drain and Accessories
Once the wood clamp or wood wedge has been in place for 24 hours, you can remove it and attach the drain. Apply a bead of caulk to the underside of the drain to create a watertight seal. Underneath the sink, tighten the gasket and flange. Remove any excess caulk. If you will be using a garbage disposal, install the mounting bracket under the sink.
Step 7: Connect the Plumbing
Reattach the P trap and connect water supply lines to the faucet lines. Reinstall the dishwasher drain if you have one, and if you have a garbage disposal, follow the manufacturer's instructions for installation.
Step 8: Test It Out
Turn on the water supply and run the water. Check for any signs of leaks and adjust accordingly. Then turn on the power at the circuit breaker for the garbage disposal.
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