There are three ways kitchen sink basins can be set in the countertop opening. The first type of basin is the top-mount basin. This type of basin sits on top of the surrounding countertop and is sealed and secured from underneath. Secondly, there is the flush-mount basin. This type of basin sits flush with the countertop and is secured from underneath and the sides. The third type of basin is the undercounter type. This type also secures to the bottom side of the counter. This article will address replacing a single bowl top mount kitchen sink basin.
Step 1: Under Counter Prep Work
Remove all obstructions from under the sink and counter. Anything that can be damaged by water should also be removed. You need to be able to move freely under the sink. While you’re under the sink, unplug the garbage disposal and turn off the valves to the sink faucet.
Step 2: Remove Water Lines from Sink Faucet
Using the adjustable wrench, remove the hot and cold water lines from the sink faucet. Remember, as you lay on your back, the hot water is on your right.
Step 3: Disconnect the Drain Lines
Using the channellocks and pipe wrench, unscrew the pipe connectors from the disposal and the wall drain. Set these aside.
Step 4: Disconnect the Disposal
While supporting the disposal, carefully remove the cam ring collar which holds secures the disposal to the sink opening. Set disposal aside.
Step 5: Remove the Old Sink
There will be anywhere from 4 to 8 clips that screw into the bottom of the countertop to secure the sink in the opening. Remove these. Be careful to support the sink as you remove the last 2 or 3.
Step 6: Transfer Parts to New Sink
Transfer any parts such as faucet or strainer baskets that you’ll be keeping to the new sink. Use plumber’s putty when attaching the strainer baskets.
Step 7: Mount the New Sink
Climb back under the counter and, with help again, attach the new clips to the underside of the counter to secure the new sink in place.
Step 8: Reattach Disposal and Drain
Reattach the disposal to the sink basket and secure with the cam collar. Attach the drain lines where you removed them from, making sure they are hand tight. Plug the disposal back in.
Step 9: Reattach the Water Lines
Wrap the faucet water inlets with Teflon tape and reattach the water lines. Tighten enough to ensure a water tight seal. Test to ensure a leak free installation.
Step 10: Seal With Caulking
Run a bead of caulk around the whole sink and use a wet finger to smooth it and push it into the joint between the sink and the counter.