How to Replace and Caulk the Bathroom Sink Faucet

Replacing bathroom sink faucetHow to replace the bathroom sink faucet?

Replacing the bathroom sink faucet can be easily done with some simple tools. This is a DIY project that can be performed by nearly everyone. For saving money or for getting it done in as short time as possible. Changing the faucet hardware is easy, but you’ll need to follow some simple steps.

First, turn the water off

It is incredible how many home re-modelers forget about this step and start to work on their faucet just to discover that water pours out, almost inundating the bathroom. After turning off the water, let the water in the plumbs run out of it. Only then, you can start working on your faucet.

Besides the faucet fixture itself, you won’t need lots of things to install a new faucet. Before you purchase a new faucet fixture, remember that not all faucets fit in every sink. The counter of your sink will have two holes, more or less 3 inches apart, for fixing a faucet. You could drill new holes, but it is not recommended, unless you know what you are doing. Finding a faucet that matches your existing counter should not be a huge problem, so measure the distance and buy an appropriate faucet.

Buy also some Teflon tape, putty or caulking. A good wrench is normally your basic tool and you’ll also need a screwdriver.

Removing the old faucet is a simple process

  1. Remove the caps from the faucet handles and unscrew them.
  2. Then go under the sink and find the nuts that hold the supply lines to the faucet fixture and loosen them.
  3. Sometimes you’ll find additional screws connecting the faucet to the counter top, also unscrew them and remove the faucet.
  4. After removing the faucet, clean everything thoroughly.
  5. Remove any trace of caulk that you might find.
  6. Check for mold and also remove it. Mold can be a terrible health hazard and you should keep your bathroom clean of it.


Installing a new bathroom sink faucet is as simply as removing the old. It is simply done in the inverse order. Most faucets come with everything that you’ll need, except the caulk. Some come with a rubber ring, in this case you won’t need caulk. If you apply caulk buy some that is anti-mold and was developed specifically for bathrooms. Tighten every bolt or screw firmly but don’t use too much pressure on it.

After you are ready, turn the water on and test your installation for leaks.

How to caulk the bathroom sink?

caulking the bathroom sinkCaulking a bathroom sink is easier than some homeowners think. Care should be taken so no water or moisture seep into the floor, the cabinet or the woodwork. Moisture or water is terrible for your bathroom floors or unprotected areas. Mold can only spread where there is moisture. Don’t underestimate the danger of mold; it is with no doubt a health hazard for all the users of the bathroom. Once mold seeps into a bathroom, it can cost thousands of dollars to get rid of it. After some months, some homeowners simply discover that the mold is back. Equally destructive is water seeping behind the tiles or into the floor. Repairing that kind of damage cost something around a thousands dollars. Preventing it from happening costs sometimes less than $10 and a couple of hours of easy work. All these headaches can be avoided by just spending a couple of hours caulking the bathroom sink properly.

What will you need?

Caulking, of course, this can be bought as a tube of caulking or a cartridge for a caulking gun. The choice is a matter of personal preference. If you have just one bathroom, go for the tube, it is cheaper for a one time application. If you want to caulk more than one bathroom, the caulking gun is definitely a useful tool. The prices range from $4 or $5 for the caulking tube to about $15 for the caulking gun with a cartridge.

  • razor blade
  • screw driver
  • knife
  • cleanser

You’ll need to remove the old caulking completely. That means scratching until it is completely gone. This step is more difficult than it seems. Caulking is, due to its purpose, sticky, so you’ll have to scratch until every single piece is completely removed. If you find mold on your old caulking, extra care should be taken. After removing the old caulking completely, clean the spot with alcohol or other stronger cleanser than soap. As said above, mold is a danger to your bathroom. Wait until it is completely dry to apply the new caulking.

Useful tips

caulk and replace bathroom sink faucetIf the old caulking is only partially broken, do not try to repair only the broken part. Remove it completely and caulk it completely anew. Not removing the old caulk will probably implies that the old problems are still there. Buy quality caulking, specifically developed for a bathroom. It costs only slightly more, but fulfils much better its function.

Tip one: check the bathroom sink’s caulk regularly. Equally, also check other potential sources for leaks in your bathroom. If you see some crack in the caulking, you have to re-caulk. If you find mildew, it is also absolutely necessary to re-caulk. Remember to use an anti-mildew caulk, since some mildew is very persistent and a health hazard. Another sign that your bathroom sink needs repair are moisture under it or any single drop of water below it. It is not necessarily a sign that the caulking is broken, since the leaks can be from a leak in the fixture or plumbing.

Tip two: re-caulking is an inexpensive option. Do it yourself and don’t leave it for another day. Any novice is capable of doing. You probably already have the necessary tools.

Tip three: clean the surface thoroughly. This is the most important point, especially if you have detected some mildew in the old caulking. After cleaning the surface, wait until it is completely dry to apply the new caulking. You can clean the surface with alcohol or any other similar product, like gasoline. Water won’t dissolve the old caulk. This is clearly the part that is going to take you the most time. If the old caulk was contaminated by mildew, clean the surface using bleach. This is normally deadly for mildew.

Tip four: buy good, quality caulk. Buy one with mildew killer and one that was especially developed for bathrooms. Choose one with silicone or a PVA caulk. Both have an extremely long life and are waterproof. Silicone is very difficult to remove once you apply it, so some people prefer the PVA option.

Tip five: there is no need to apply an excessive amount of caulking. The caulk should simply seal. Apply it at the right place applying some pressure, so that it fills any grieves and sticks to the surface. Caulking is easy and can be accomplished in a short period of time.

Written by 

Leave a Reply

Your email address will not be published. Required fields are marked *