How Do You Seal A Bathroom Sink Drain

The bathroom sink is one of the most used fixtures in the home, and as such, it can be prone to leaks. One of the most common causes of a leaky bathroom sink drain is a failed seal. The seal between the drain flange and the sink basin can deteriorate over time, allowing water to seep through. This can lead to water damage to the cabinet and flooring beneath the sink, as well as a musty smell in the bathroom.

Fortunately, sealing a bathroom sink drain is a relatively simple and inexpensive repair that can be done in a few minutes. Here are the steps involved:

1. Gather your materials

You will need the following materials to seal a bathroom sink drain:

A new drain flange
A tube of plumber's putty
A putty knife
A wrench

2. Remove the old drain flange

Use a wrench to loosen the nuts that hold the old drain flange in place. Once the nuts are loose, you can remove the drain flange from the sink basin.

3. Clean the sink basin and drain flange

Use a damp cloth to clean the sink basin and drain flange. Remove any old plumber's putty or other debris from the surfaces.

4. Apply plumber's putty to the drain flange

Roll a rope of plumber's putty between your fingers and then apply it to the bottom of the drain flange. Make sure that the putty is evenly distributed around the flange.

5. Install the drain flange

Place the drain flange in the sink basin and hand-tighten the nuts. Use the wrench to further tighten the nuts, but do not overtighten them.

6. Test the seal

Turn on the water and let it run for a few minutes. Check for any leaks around the drain flange. If you see any leaks, retighten the nuts.

Tips

If you are having difficulty removing the old drain flange, you can try using a pair of pliers.
If you do not have any plumber's putty, you can use a silicone sealant instead.
Be sure to clean the sink basin and drain flange thoroughly before applying plumber's putty or silicone sealant.
Do not overtighten the nuts when installing the drain flange.
If you are not comfortable making this repair yourself, you can call a plumber.