Place the sink in position on the cupboard or in the worktop cut out, and mark the new fixing points. Mark the positions of the taps and waste pipes.
Extend the waste and supply pipes to the vicinity of the marks. These should end up in a location which will still allow you to reposition the sink, but also afford you access to making the final connections without having to squeeze your hand up behind the sink and fiddle with awkward connections.
Lay the sink on the floor on a protective cloth to prevent scratching.
Fitting the taps and waste to the sink
Following the manufacturer’s instructions, assemble the taps on the sink. Be sure to fit the supplied washers at the appropriate positions. These are designed to cushion the taps against the surface of the sink so that they do not damage it.
Insert the waste outlet into the sink and fix in place. Some outlets are mounted on a rubber gasket while others require a seating compound or silicone sealant. Check the recommendations. This provides a seal so that water is directed to the inside of the waste pipe, rather than the outside.
Connect the overflow assembly to the waste.
Some modern taps come with small tail pipes, which are fitted at the same time as the taps. If not, you may find installation a lot easier if you connect a short length of copper tube to each tap at this stage. These can then be connected to the supply later. The advantage is that you can fit these while the sink is on the floor and you have plenty of working space. Once the sink is mounted, the connecting of the pipes to the taps can be very awkward.
Fixing the sink and connecting the water supply and waste
Place the sink in position and fix it using the appropriate brackets and screws. Now connect the hot and cold pipes to the tails fitted earlier. The type of connection used, soldered or compression depends on your preference, but keep heat away from the basin.
You may like to use the opportunity to fit a small stop valve. This can double as your connecting piece and also provide the facility for isolating supplies later. Connecting the water supply and waste assembly the waste trap and connect to the waste pipe. For a new installation, you will need to follow the guide on installing waste pipes.
Make sure you remember to provide and or maintain effective earth bonding of the sink and pipework.