Sinks are straightforward to replace. Simply remove the old sink and connect the new one. If a sink is being installed in a new position, you will need to reroute water supply and drainage pipes.

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Step 1

Remove Old Sink

Before you start, turn off the water at the shut-off valves on the hot- and cold-water supply pipes. If there are no valves, part or all of each system may require draining down. With the water off, open the faucets and allow them to run dry.

Disconnect the supply tubes from the faucets, or on older systems, cut through rigid supply pipes. Unscrew the plastic nut connecting the trap to the waste pipe. When all the plumbing is disconnected, if there are screws holding the sink to the wall then remove them, then lift the sink away. There is no need to remove the faucets from the sink unless you want to reuse them. Undo the screws attaching the pedestal to the floor and remove it.

Step 2

Install Sink and Pedestal

When you have removed the old sink, assess whether you need to reroute the plumbing. You may want to adjust the supply and drainage pipes slightly so that they run up inside the pedestal, rather than simply being hidden behind it. This isn’t essential, but you might decide it is worth doing if you have a side view of the sink. The supply pipes should have shut-off valves. Then follow the steps shown opposite to install a sink with a pedestal.

Step 3

Installing Other Styles of Sinks

Assembling the components of the plug, trap, and faucets is similar for all types, but other aspects of the procedure can differ. For example, you might need to hide supply and drainage pipes in a wall. Units or countertops may need to be cut to house some types of sinks — the manufacturer will generally supply a cutting template. If you are putting a sink into a stone countertop, it may need to be cut at the factory.

Wall-mounted sinks rely on their brackets to support their full weight. Most manufacturers supply special brackets with wall-mounted sinks. If none are supplied, seek installation advice from your supplier. When attaching a wall-mounted sink to a stud wall, you will need to insert new blocking to provide firm attachment points. You can modify the plumbing to run through the wall at the same time. If you want to hide the supply and drainage pipes of a wall-mounted sink in a solid wall, you will have to chisel out grooves for them to sit in. Run the pipes through protective casings, then finish the wall over the top. This technique is known as "chasing."

Step 4

Install a Wall-Mounted Sink

Measure the fastener positions on the sink and mark them to the wall (Image 1). Make sure the two points are level and the supply and waste pipes are centered. Drill pilot holes at the marked off points.

Screw the brackets provided into the pilot holes (Image 2). If you are attaching to a masonry wall, insert wall plugs into the pilot holes first.

Hang the sink on the brackets, then tighten the nuts to hold the sink firmly (Image 3). Connect the hot and cold water, and the waste pipe.

Step 5

Assembling the Faucet

Balance the sink on its back. Push the top of the drain assembly through the drain hole to meet the bottom section (Image 1).

Hold the top of the drain assembly steady while you screw the bottom on. The pop-up stopper system should point to the back of the sink (Image 2).

Insert the washer supplied into the bottom of the faucet (Image 3).

Screw supply tubes into the faucet tails (Image 4). You can reuse supply tubes from the old sink.

Step 6

Attach Faucet to Sink

Insert the faucets, with supply tubes attached, through the hole in the top of the sink (Image 1).

Slip a washer on before you tighten the retaining nut underneath the sink to hold the faucets in position, but do not over-tighten (Image 2).

Step 7


Photo By: DK - Do It Yourself Home Improvement ©2009 Dorling Kindersley Limited

DK - Do It Yourself Home Improvement, 2009 Dorling Kindersley Limited

Connect the Pop-Up Stopper System

Connect the pop-up stopper system. Insert the rod with the lever attached through the faucet. Screw the other rod into the drain assembly. Connect them using the hardware supplied. Screw a trap onto the bottom of the drain assembly.

Step 8

Positioning the Sink

Position the pedestal in front of the supply and waste pipes (Image 1).

Place the sink on the pedestal. Adjust the pedestal so that it provides good support and the sink is nestling securely on top of it (Image 2).

Use a level to make the final adjustments, then mark through the sink and pedestal attachment points with a pencil (Image 3).

Drill pilot holes at the points you marked (Image 4). Make sure you are drilling into studs.

Step 9

Securing the Sink in Place

Reposition the sink. Place rubber washers over the attachment points and then screw the sink into position (Image 1). Repeat for the pedestal.

Screw the trap connector nut onto the waste pipe (Image 2).

Use slip joint pliers to brace the supply pipes while you tighten the supply tubes onto them with an adjustable wrench (Image 3).

Position the stopper (Image 4). Apply bathroom caulk across the back of the sink and around the bottom of the pedestal. Turn on the water.