Roughing In a Double Sink Vanity – Tips & Tricks


If you’re renovating your bathroom and installing a double sink vanity, it’s important to know how to rough in the plumbing before installing the sink. Roughing in refers to the process of preparing the plumbing and electrical connections for a new fixture. In this article, we’ll go over the steps involved in roughing in a double sink vanity.

Step 1: Measure the Sink Dimensions

The first step is to measure the dimensions of the sink and mark the locations of the drain and water supply lines. Double sink vanities typically require two drain and water supply lines, so be sure to measure and mark the locations of both.

Step 2: Cut Holes in the Vanity Top

Next, use a hole saw to cut holes in the vanity top for the sink drains and water supply lines. Be sure to follow the manufacturer’s instructions for the size and placement of the holes.

Step 3: Install the Drain and Water Supply Lines

Once the holes are cut, install the drain and water supply lines according to the manufacturer’s instructions. Double sink vanities typically require two drain and water supply lines, so be sure to install both.

Step 4: Connect the Sinks

Finally, connect the sinks to the drain and water supply lines using the manufacturer’s recommended hardware. Double sink vanities typically require two sinks, so be sure to install both.

By following these steps, you can rough in a double sink vanity and ensure that your plumbing is properly prepared for the installation of your new sinks.

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