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How to Install a Bathroom Sink?

How to Install a Bathroom Sink?
Last Updated: 06 August 2019

Installing a bathroom sink is not an easy task, but you can do it on your own if you are know how to do it. For some people who can afford to pay a licensed plumber, they could do so. But, for some who are in a tight budget doing it on their own is that best option.

First, you need to find that best bathroom washbowl before starting with this work. Just like other DIY jobs, you need preparing the tools and materials necessary for completing this task. Then, go through these steps on how to install a bathroom sink. Men and women can do this task. Below are the necessary steps for installing a washbasin.

Things You Need

  • Bathroom washbowl of your choice
  • Wrench
  • Sealant
  • Rags
  • Putty knife
  • Bucket
  • Putty
  • Silicone sealant
  • Screwdriver

Steps in Installing a Bathroom Sink

Take note: These steps in installing a washbasin may differ depending on a type of basin. This how-to is these necessary steps on installing that washbowl.

Step #1 Turn off the Water Supply

Most of the time you will find two valves underneath your existing washbasin – one for hot and the other for cold. Make sure you have turned them off completely. Try to turn on your water faucet. If there is no water coming out, then you are ready to go.

If not, you can check on these valves again, and if you are having a hard time turning them off in your pipes, you can turn off that main water supply. You would not want water spilling all over your working area.

Step #2 Detach the Old Sink

Since washbowls are connected in various ways, this step will depend on the type of washbowl you have. Some washbasin is installed with metal clips. Others are caulked in position and held by gravity. Check your current washbowl thoroughly before mounting this new washbasin. To help loosen that old caulked washbasin, use a putty knife.

The next thing you need to know is how to remove the sink drain. Regardless of what type of basin you have, a drain is relatively universal. You need to disconnect all supply and drain lines from this faucet. With a large nut, detach your washbasin from that pipe. You will also need your wrench and pliers.

If you can remove this U-bend, you can do it. Reinstalling it is much more comfortable. Be aware of the water that might leak as it was already in these tubes. Prepare a bowl, towel, or bucket just in case you need to catch that leakage.

Step#3 Prepare the Area for the Sink

Thoroughly clean that area intended for your basin and dry it thoroughly. You can use a bathroom towel, a cleaner, and a scrubber if necessary, to get rid of all that dirt, caulk, and all these bad things trapped around the corners.

The next time you will clean it is when you do another bathroom washbowl installation, so make sure you have covered everything. Sometimes, you will need to trim that area to prepare it for your new basin. Make sure you know how to remove the bathroom sink drain very well – accurately measure everything before cutting.

Step#4 Installing the Sink

There are various types of washbasin in the market, and each has specific instructions on installing it. If you are changing your old tub, make sure you know how to replace a bathroom sink. These steps are specified on the type of basin you have.

To install your new washbasin, follow these instructions indicated in the manual. Use this mounting hardware and clips comes with your basin as you install it.

If you are installing a porcelain basin, gravity will hold it in position. Apply caulk generously around the corners where it comes in contact with that counter surface. Make sure it is sealed entirely around the basin and water will not leak in. Any leakage may damage your basin underneath. Lower the basin over that hold, and make sure it is on the center. To assure it is well-sealed use a secure seal.

Step#5 Installing the Drain and Water Pipes

The next step is to install these drain and water pipes. Check that instructions on how to install a bathroom sink drain and how to install a bathroom sink drain pipe before commencing with the work.

The first thing you need to do is to connect that drain in the hole underneath your basin. Install a rubber gasket and squeezes against the basin together with a washer and nut. If it does not have a gasket, use silicone or putty to shore up that seal.

To ensure it is well-sealed, it can run a bead of caulk around. Attach that U-bend the same way when removing it.

Connect that drain basin pipes and the water lines to this faucet on your washbasin. It is a must that your washbasin should have these proper connectors or instructions you need.

Connect that pop-up. It is that device that you use in opening and closing your basin drain. That pop-up is made of a metal rod with a ball attached to it.

Step#6 Replace the Drain Plug and Complete the Job

Make sure you follow these instructions on installing your basin drain plug carefully. Caulk or putty can help in creating a proper seal. Check everything thoroughly, especially this U-bend and drain pipe. Do not use your washbasin for 24 hours and that caulk to completely dry. On the next day, open up these valves, open that faucet and test the water. If there is no issue, then you are done!

Final Thoughts

The secret for a successful installation of your new bathroom sink is to follow these instructions carefully. Keep in mind sinks are available in different style and design, so make sure you follow that user’s manual instruction on how to install a bathroom sink.

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