How To Replace A Bathroom Sink. Before you install a bathroom sink turn off the water supply and remove the old sink. To replace a top mount bathroom sink turn off the water supply and empty the faucet lines.
If no water comes out from the faucet when you test the hot and cold water you can proceed to the next step. To replace a top mount bathroom sink turn off the water supply and empty the faucet lines. Next remove the clips underneath cut away any sealant between the sink and countertop and lift the sink away from the counter.
Next put a thin bead of silicon around the lower lip of the sink and set the sink in place.
To replace a top mount bathroom sink turn off the water supply and empty the faucet lines. Next remove the clips underneath cut away any sealant between the sink and countertop and lift the sink away from the counter. The first thing to do is to shut off the water supply. To do this look for two valves beneath the sink.