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How to Convert a Single Sink to a Double Bathroom Sink


by DoItYourself Staff

what you'll need

  • Double bathroom kitchen sink
  • Plumbing supplies (tees, flex lines)
  • Faucets or taps
  • Dual shut off valves

His and Her sinks are more stylish and a double bathroom sink is more practical when it comes to rushed morning routines and storage or cosmetics. Many houses and apartments are built with a single bathroom sink that has one faucet and it is common to extend this feature to a double bathroom sink.

There is no queue at the door or mix up with facial and body products when each partner is allocated their own sink. This should eliminate arguments about leaving toothpaste in the sink or the cap off the tube. A double bathroom sink is a common renovation in many older homes to accommodate the fast-paced, independent living habits of partners.

Step 1: Find an Identical Bathroom Sink

Either find an identical single sink or buy two new basins and faucets. It is probably best to get rid of the old single sink as it will be outdated and there are many beautiful double bathroom sinks that should be cheaper than two separate single sinks.

Mismatched double bathroom sinks will look cheap and lack style. The difference will be more obvious than the wonderful workmanship on the final product. There are many types of sinks that are available online or in stores in a variety or colors, prices and materials. Decide with your partner what color scheme and price range will suit your needs.

Step 2: Turn off the Main Water Supply

If you neglect this step, your tears of frustration will be mixed with another flood. Research the type of plumbing in your residence and determine how old the pipes are as it may help to replace some damaged pipes and connections that lead into the wall. The best way to install the double bathroom sinks is to have a wide knowledge of your plumbing in your home.

Step 3: Tie the Double Bathroom Sink to a Single Main Drain

Only one trap is needed so check that the water supply lines are attached with dual shut-off valves to prevent flooding and accidents. Determine the size of the drainpipe needed and use tee lines on both taps to hook up individual faucets and check flow of water. This will differentiate between hot and cold water flow.

Step 4: Choose Correct Flex Lines, Connections and Pipes

Stainless steel is better than copper, galvanized or non-metal piping. Flexes can be connected together if they are too short to reach the wall. Research the type of connection and pressure required to suit your double bathroom sink before visiting the shop and purchasing it.

It is best to renovate a few things in your bathroom when you install a double bathroom sink to upgrade the pleasures of sharing bathroom space and time with your partner. Alternatively, you can buy a few more accessories such as mirrors, soap dispensers and fancy faucets to increase the comfort and aesthetics of your bathroom.

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