Do Plumbers Install Sinks?


Believe it or not, the question of whether or not plumbers can install sinks is one that we get frequently. Additionally, this is a commonly asked question throughout the plumbing community.

Today, we’re here to definitively answer that question: plumbers can and regularly do install sinks. In fact, we highly recommend that you have a plumber handle this kitchen plumbing project for you.

In this post, we’ll share some information about the process so that you can better understand how sink installations work and why this is a job that you'd be wise to hire a professional for.

For sink installation in your house, whether it be a kitchen sink, a bathroom sink, a washroom sink or other, schedule service with us!

Sink Installation Completed by Plumbers Include the Following Steps:

Plumber Prepping a Sink for Installation

Step 1: Preparing the Sink

The first thing you need to do to install a new sink is to measure the old sink to get the right dimensions. When doing this, make sure you pay attention to where the drain is.

If you’re not able to get a new sink with the same dimensions or drain location, you might need to change your counter opening or plumbing. When planning for your new sink, you’ll also want to think about whether you need to replace the faucet or any other components, as this is easiest to do when you’re replacing the entire sink.

Step 2: Removal of the Old Sink

Plumber Removing an Old Sink

When removing the existing sink, first turn off the hot and cold water supply lines. Once you’ve done this and opened the faucets to relieve any pressure, disconnect all water supply lines.

If you have a garbage disposal or dishwasher, you’ll also need to disconnect those. After all, lines are disconnected, loosen the metal clips under the sink, cut the caulk around the sink and slowly push the sink out to remove it.

Step 3: Installation of the New Sink

Sink Installation Completed by a Plumber

Once you’re ready to install the new sink, hold it over the space to ensure that it fits properly. If it doesn’t fit, you’ll need to modify the countertop using a jigsaw, router, or tile cutter.

Once you’ve ensured the space is ready, you can begin the actual installation process. In the first phase of this process, you’ll want to: attach the clips, use putty to install the drain strainer; secure the rubber gaskets and threaded flange to the underside of the sink drain; and install the mounting of the disposal.

Once those components are secured, apply a sealant to the edge of the basin, carefully lower it into the opening, and then tighten the metal clips under the sink. When it’s in place, you’ll need to attach the supply lines to water connections and, if you have a garbage disposal and dishwasher, connect those as well.

If your pipes are too long, too short or need a bend in them, this is the time that you’ll make those adjustments. With all components in place, you’ll then apply a sealant to the perimeter and turn the water back on. As you can tell, this process is not an easy one.

Plus, it’s important that all aspects of the project are done correctly to avoid damage and to ensure that the sink functions correctly. While we shared these tips because it’s important to understand what’s involved in a sink installation, we highly recommend that you leave this job to a trained professional. If you have any questions or need a sink installed, call Flow Pro Plumbing today at 925-436-1717.

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