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- Converting a Single Sink into a Double Vanity
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These days, bathroom renovations are a common home improvement project. With a myriad of bathroom styles to choose from and a wealth of options for fixtures and faucets, the decisions seem endless. Just when you have it all figured out, you learn you can turn that cramped single sink into a spacious double vanity in no time!
If you are tackling this yourself:
In addition to the new vanity, sink and faucets, plus usual home improvement tools, you will also need additional plumbing supplies. These include a Tee and Y-fitting, and PVC pipes. HGTV suggests using double outlet valve as outlined on their site. You'll need to follow any cabinet removal and installation instructions from the beginning.
Steps for Converting the Sink
Converting a single sink into a dual sink involves tying each sink to the main drain line. The two sinks will need to be connected first before attaching them to the drain. This allows the use of a single trap instead of having to need two.
1.Turn off the water supply. Many bathroom sinks have a shut-off valve for the hot and cold water. This valve needs to be closed to turn off the water to the sink. If there are no shut-off valves present, the main water shut-off valve in your home needs to be closed.
2. Open a faucet in another part of the home to release pressure remaining in the water pipes.
3. The hot and cold water supply valves then need to be removed from the existing faucet. The piping for the drain will be disconnected before removing the existing sink.
4. Plumb the drains of the new sinks. The Y-fitting needs to be attached to the top of the trap of the existing drain pipe. This is needed to attach the drain lines from the new sinks.
5. Tee lines then need to be attached to the hot and cold water lines. New water supply lines for the sinks will be attached to each tee. The best type of water line for this application is a flex line. This is a tube that is easy to route under the new vanity. However, the tees will need to be a match for the new tubing.
6. Run new drain lines from the sink to the Y-fitting. These will be slightly smaller than the existing drain pipe.
7. The new PVC drain pipes are then attached to each sink and securely tightened.
8. The hot and cold water supply lines will need to be connected to each faucet before opening any of the shut-off valves.
Building Code for Plumbing
Building codes for plumbing can vary from state to state, even at the municipal level—it's best to call in a professional plumber to find out about the rules for your area. The building code for Sacramento plumbing can be found here or you can contact us at Ace to have a plumber look at your bathroom project. Our experienced professionals can help!