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How to Get Rid of Black Mold from Shower Caulk

The shower is an important area in the home. Along with the bathroom, it is where we clean our bodies and relieve ourselves whenever we need. As such, a lot of water goes through this room, whether flushing the toilet, running the sink, or using the bath or shower. There are areas that are susceptible to mold, though. For example, the caulk that binds the bathtub or shower to the floor and wall is porous. Since it is porous, mold can get into the caulk. We will tell you how to get rid of black mold in shower caulk.

Mold is bad enough as is, but black mold is really terrible. Even if you don’t have sensitivity to mold, black mold can make you very sick. You don’t want that in your shower caulk, so you should get rid of it as soon as you can. Shower caulk can be pretty easy to remove and reapply, but if the mold is already there, you may have an underlying problem.

What is black mold?

Mold is bad enough, considering it is a fungus that produces spores. These spores can get into your lungs and cause your immune system to go crazy. This will lead to allergy responses such as watery eyes, itchy skin, coughing, and sneezing. However, black mold is much worse. Black mold, called Stachybotrys chartarum, produces chemicals called mycotoxins. The more black mold there is, the more mycotoxins will be in the air.

In some extreme cases, black mold has led to the death of people. Others have gotten diseases from mycotoxins. Black mold is no joke. If you find that your home has black mold, you will want to get a mold remediation specialist into your home as soon as you can. Shower caulk is a perfect place for mold to grow, so you may want to consider your options. If you are skilled with bathroom maintenance, shower caulk is easy to remove.

Remove Black Mold from Shower Caulk

Before you do anything, remember that mold is dangerous to handle and should never be messed with without safety gear. Putting gloves on is important. You should also consider a surgical or sawdust mask so you don’t inhale the cleaning fumes. It is possible for mold to flake off and rise into the air to the point where you can breathe it in. The spores are bad enough, but actual pieces of the mold can cause a worse reaction.

Similarly to removing mold from grout, caulk works very similarly. Since it is porous, water gets into it easily. This is how the mold got there in the first place. Since mold is a living thing, it has to be killed rather than just scrubbed away. As such, pouring bleach onto it is a great way to kill the mold and get it out of your shower caulk. Vinegar kills mold as well, but you will want something that is a bit stronger for black mold.

It is simply a matter of putting bleach into a spray bottle. You can dilute it a bit with water if you don’t want to worry about the fumes. Spray the bleach along the caulk of the shower or bathtub and let it sit for 10 to 15 minutes. Afterward, all you have to do is get a toothbrush or some other hard bristle brush and scrub it down. You may have to apply it more than once, though.


Shower caulk is a lot like grout in a shower. It is composed of similar ingredients, so you may see them being sold near each other. If need be, caulk can be removed with the use of a scraping tool. It can then be reapplied with a caulk gun, but you should make sure that all the mold is gone before replacing the caulk. However, it can be treated with bleach and a heavy scrub down just as easily.

Mold can be killed by bleach and vinegar, but you may want to stick with bleach if you’re getting rid of it from caulk. Caulk is usually white, so you won’t have to worry about bleach damaging it. All you have to do is spray the bleach on there and leave it for 10 to 15 minutes for it to kill the mold inside the caulk. Afterward, scrubbing it down and washing it off will remove any mold that you might have in the caulk.

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