How to Add Plumbing for a Second Sink

In most cases a plumbing system is designed to be equipped with only one sink in the kitchen and in the bathroom. In some cases there might be the need to add another one. There might be two cooks in the house and each need a lavatory or you might just have a big enough bathroom to allow for the installation of a new sink. Most individuals will choose a flat bottom, 18 inch diameter round model as a second sink because it is very useful, especially when the area is tight or maybe in an island. Look for one with a standard 3 and a half inch drain opening so that you can easily add a disposal.

When designing a two sink system you need to make sure that the larger sink is near your dishwasher (if you have one). The costs for adding a new sink are variable and are based on region of purchase. Plumbing hookups needed and extra pipes are easy to find anywhere so this will not be a problem. If you want to install a second sink in the bathroom, the best solution is to place it near the existing one. The main advantage to doing so is that you will not have to cut into the wall when connecting the drain system.

With all this in mind, first you need to plan the extension. The new drain must not be further away than 30 inches to the old one and if there is a height difference, the new sink must not be higher than 6 inches when measured in contrast to the old one. Always remember that hiring a plumber assures the fact that all will be done right. The cost of adding a new sink is not that high and there is a big chance that major modifications will not be done. Get two estimates and all the process should be ready in a day or two.

If you want to add plumbing for a second sink by yourself you first need to be confident that you can do it. The entire process is simple but if not done properly you will end up with problems. First you need to turn off the water and install new T-fittings in order to get supply lines to the new sink. Drain T-fittings must also be installed in the system. This is done with ease because you can use slip-joint T-fittings just above the existing sink’s trap. A good rule of thumb is that the new drainpipe needs to slope a quarter of an inch for every foot in length. This quickly evacuates the sink and works well with the trap. The last step is to check local laws in order to see if the new sink requires a separate vent. If it does you will need to get advice of how to properly do it from a professional.

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