DIY Network

How To Install a Porcelain Kitchen Sink

You don't have to be a DIY expert to install a kitchen sink, but if it's a heavyweight porcelain sink you may need help to lift it into place.

More in Kitchen

installing porcelain kitchen sink
  • Time

    Under Half Day

  • Price Range

    $500 - $1,000

  • Difficulty

    Easy to Moderate

Highlights:

Step 1: Remove the Faucet

Shut off the water supply, both hot and cold water, and open up the faucets to relieve any pressure in the supply lines.
Below the sink, use a wrench to disconnect the sink’s water lines from the plumbing supply lines. Have a towel ready to soak up the water that will drain from the lines.

Loosen the faucet’s tailpiece nut with a wrench (this is where a basin wrench comes in handy), and disconnect the drain tube below the strainer. This tube is called a P-trap (or U-trap, depending on how you look at it) and it’s susceptible to corrosion, so inspect and replace it if necessary during this operation.

installing porcelain kitchen sink

Step 2: Remove the Old Sink

With a nut driver or screwdriver, loosen any clips below the counter that hold the old sink in place (Image 1). Move to the above-cabinet part of the sink, and use a utility knife to cut away the putty (or caulk) seal between the counter and the old sink (Image 2). Lift the old sink out of the way (Image 3, Image 4)
Clean the surface where the sink was with a putty knife and a rag (Image 5).

Step 3: Install the New Faucets and Sprayers

Before installing the new sink, install the faucets and water handles to the sink. Sinks may be ordered with any number of holes depending on how many accessories you intend to install in addition to the faucet, such as sprayers, soap dispensers and the like. You'll have two fewer holes if the faucet has the water handles built in. Decorative escutcheons can be used to cover holes you don’t intend to use. You can also have additional holes custom-drilled
(Image 1).

When you install the supply line for the sprayer, attach a lead weight (provided) onto the line so it will retract on cue. Pull the line taut and place the weight where the line begins to bend, tightening it with a screwdriver.
Install the soap dispenser, feeding the piece that goes on top of the sink through the appropriate hole to a nylon lock nut below, which you tighten using your fingers (be careful not to overtighten if you use a wrench). Then screw the soap container onto the nut below the sink (Image 2)

Step 4: Install the New Sink

Put a new bead of plumber's putty around the perimeter of the countertop sink opening. A porcelain sink is so heavy it won't require clips to stay in place.
Lift the new sink into the space vacated by the old one, being careful to settle all the supply lines under the sink without crimping them before you put it in place. These sinks are heavy, so it's a good idea to have a friend help you do the lifting.

Install the strainer, connecting the piece that goes above the sink to the piece that goes below. Bed the strainer to the sink in a bead of plumber’s putty and wipe away the excess. Reconnect the P-trap drain tube from below.

Reconnect the sink’s water lines to the supply lines with a wrench.

To complete the job, remove the excess plumber's putty from the countertop around the sink, wiping it off with your finger and then using a dry cloth to smooth the remainder.

lift new sink into space vacated by old sink

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