How To Reseal Bathroom Sink Drain

A leaky bathroom sink drain can be a frustrating and persistent problem. Not only can it waste water, but it can also lead to mold and mildew growth. Fortunately, resealing the drain is a relatively simple task that can be completed in a few minutes.

Before you begin, you will need to gather the following tools and materials:

Plunger
Adjustable wrench
Phillips head screwdriver
Tube of silicone caulk
Caulk gun
Rags

Once you have gathered your tools and materials, follow these steps to reseal your bathroom sink drain:

Remove the drain stopper. Most drain stoppers are held in place by a screw. Use the Phillips head screwdriver to remove the screw and lift the stopper out.
Clean the drain. Use the plunger to remove any standing water from the drain. Once the water is removed, use a rag to wipe away any debris from the drain.
Apply caulk to the drain. Load the caulk gun with a tube of silicone caulk. Apply a bead of caulk around the base of the drain, where it meets the sink.
Smooth the caulk. Use your finger or a damp rag to smooth the caulk and remove any excess.
Reinstall the drain stopper. Replace the drain stopper and tighten the screw. Run the water to test the seal.

If the leak persists, you may need to repeat the process. Once the seal is secure, the leak should be stopped.

Here are some additional tips for resealing a bathroom sink drain:

Use a high-quality silicone caulk. This will help to ensure a long-lasting seal.
Make sure the drain is clean and dry before applying caulk. This will help the caulk to adhere properly.
Apply the caulk in a continuous bead. This will help to prevent leaks.
Smooth the caulk immediately after applying it. This will help to prevent it from sagging or cracking.
Wait at least 24 hours for the caulk to cure before using the sink.