What this work covers
Sink and faucet installation secures the bowl and tap to the countertop, then connects hot and cold supplies, the waste outlet, trap, and sewer connection inside the base cabinet. The visible hardware may look finished while a loose nut or seal below is still leaking, so the work is not complete until water has been run and a full sink drained under observation.
When this work is needed
It is required for a new countertop opening or when an existing sink or faucet is replaced. If a dishwasher or water purifier is added, plan its supply branch, isolation valve, waste hose, and cabinet route at the same time rather than squeezing them around completed drawers later.
Decide before installation
Confirm that the chosen products fit both the countertop and the services below it.
- Undermount or top-mount sink method and the exact countertop cutout
- Faucet height and reach and clearance from windows, wall cabinets, and the sink bowl
- Hot and cold valves, waste position, trap arrangement, and the storage space they consume
- Dishwasher and purifier branches and a separate isolation valve for each appliance
