How to Install a Bathroom Sink?

Installing a bathroom for home or replacing your old modelled one can be a comparatively easier job than what we think it is. If you have some basic skills and tools, installing it is a simple do-it-yourself job. Although, different kinds of sink need different kinds of installations.

If you know the nook and corners of this process, you can easily learn how to assemble and fit your new bathroom sink into the right place in a quick and efficient way. This article will assist you to understand the illustrated step-by-step procedures you need.

How to Install a Bathroom Sink?

​Step 1:

Before starting the job, collect the required tools at first. Before setting up a sink in your bathroom you will need a number of handy kits and tools. Make sure to gather these tools, like –

  1. Silicone caulking
  2. Basin wrench
  3. Plumber’s wrenches
  4. Plumbing sockets

Step 2:

​You need to turn the supply valves off, as no waterflow is expected during the setup process. These valves are usually located behind/under the sink. To check, turn on the hot and cold water supply lines. Thus, be sure that no water is coming out from the water lines.

Step 3:

If you are going to replace the bathroom sink, surely, you’ll have to replace the old one before installing the new one.

For this, disconnect the water supply first. While doing this, make sure you don’t damage any part of the countertop or wall. This is very normal. Use a towel or a bucket to collect the water which leaks out.

Step 4:

​Check the dimensions of the new sink that’s about to be installed. Every sink has a template for mounting the opening. This template indicates the location of faucet holes. Use the template to be sure that the no mismatching is taken place. If the sink doesn’t fit, you may have to trim the opening to match the dimension.

Step 5:

​At this stage, put the new bathroom sink in the installation space and mark the board with a caulk. You can use a layer of silicone at the lower surface of the sink and put it into the hole. Then, clean up the excess silicone. To install under-mount sinks, keep someone to assist you and put silicone beads under it. Also, install the connecting clips that are included with the sink. Again, if you’re going to install it in a granite or stone counter, make some holes at the beginning by using a diamond carbide tip.

Step 6:

​Now, secure the new sink using the clips. The clips act as a lever and thus keep the entire sink stable at its position. Read the instructions in the manufacturer’s guideline and proceed the works accordingly.

Step 7:

Now it’s time to install the faucet set. First, anchor it by reaching up to the underneath of the sink. A nut locks set comes with the box and you can use that on the purpose.

In some cases, installing the faucet first, and installing the sink later can be easier. It depends entirely on the counter design and fixtures of the sink. Again, make sure that the faucet space matches with the sink location.

Step 8:

​Now, we are about to setup the tail pieces of the set and also the drain kit. You can use the screws to set the tailpiece at the bottom surface of the sink. Many sinks have gaskets that go between the tailpiece and the sink. In that case, the gasket and the cardboard washer are included with it and also the locknut. And thus, make sure the tailpiece is well placed.

Step 9:

​We’re almost done. Reconnect the waterlines that we disconnected at step 1. You should screw the water supply lines and strengthen the related joints on the faucet with a plumber’s tape. The connector’s size should be in the instruction manual.

Step 10:

​Finally, check for the leaks by turning on the water. You can’t know if something is going to leak till you turn on the water. If there are small leaks, try tightening the connections more. The drain itself may sometime leak due to over-tightening the connector gaskets. If this is the case, don’t hand tight it. Instead, try a new washer to handle the drain leaking.

Final Thoughts

​Installing a bathroom sink or replacing it is not so hard. You can do it simply by following some simple and basic rules. So, instead of spending money by hiring a plumber, you can save a lot. Read the steps mentioned above carefully and do accordingly.


This is mike professional blogger. I start this blog to provide helpful information to the people about home, kitchen, and bathroom.

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