How To Remove Black Mold From Silicone Sealant

By ERX – Emergency Restoration Xperts

Black mold in your bathroom? Especially around that squishy, flexible stuff along your tub or shower edges? Yep — that’s silicone sealant… and it loves to trap moisture and grow mold if you’re not careful. But don’t freak out just yet 😬

In this guide, we’ll walk you through how to spot it, clean it, and keep it from coming back. No fluff. Just what works.


What Is Black Mold in Silicone?

Black mold is a type of fungus that shows up in wet, damp, dark places. Bathrooms are like paradise for it 😅 And the silicone sealant — that rubbery line between your tiles or tub — tends to trap moisture under the surface. Even worse? It’s hard to clean because it’s not like tile or plastic.

If you see little black dots or streaks that don’t wipe off easily, chances are it’s mold living inside that sealant.


Is It Dangerous?

It can be. Black mold may trigger:

  • Headaches
  • Sneezing or coughing
  • Breathing issues
  • Itchy skin or eyes

And if anyone in the house has asthma or a weak immune system, it’s a bigger problem. That’s why it’s worth getting rid of ASAP.


Step-by-Step: How to Remove Black Mold from Silicone Sealant

Let’s fix it 🔧

Step 1: Gear Up

Before touching anything, throw on some gloves. If the smell is strong, wear a mask too 😷. Mold releases spores when disturbed, and you don’t wanna breathe that in.

Step 2: Make a Cleaning Mix

Mix one part bleach with two parts warm water. You can also use white vinegar or hydrogen peroxide — both work great too.

✅ Tip: Don’t mix bleach with anything other than water.

Step 3: Apply It Generously

Soak some cotton balls or strips of paper towels in your solution. Then press them along the moldy sealant. You want it to sit for at least an hour.

Let that mix soak deep into the silicone. The longer it sits, the better it works.

Step 4: Scrub It Down

Use a toothbrush or soft scrub brush and go at it 💪. The mold should start to loosen and wipe off. If not, repeat the soaking step.

Step 5: Rinse and Dry

Wipe the area down with clean water and dry it completely. If it stays wet, the mold will come back. Use a fan or leave the window open if you can.


When to Replace the Silicone Instead

If you’ve cleaned it a couple times and the mold keeps showing up… or if the mold is deep inside and won’t budge, it might be time to remove and replace the silicone altogether.

Yeah, it’s a little more work — but sometimes that’s what it takes to really fix the issue. The new sealant will give you a fresh start 🛁


How to Prevent Mold From Coming Back

🧼 Clean your shower or tub weekly
💨 Use a fan or open a window during and after showers
🧽 Dry the edges of your tub/shower after each use
🛠 Re-seal your bathroom every couple of years

Moisture is the main reason mold shows up — take that away and it’s got nowhere to grow.


When to Call a Pro

If the mold covers a large area, smells strong, or keeps coming back no matter what you do, it’s time to call someone like ERX. We deal with mold in all the hard-to-reach, deep-into-the-wall places. And we’ll make sure it’s gone for good.


FAQ: Black Mold in Silicone Sealant

Q: Can I use vinegar instead of bleach?
A: Yep! Vinegar works well and is less harsh. It might take a few extra tries, but it’s a solid option.

Q: What if the mold keeps coming back?
A: That usually means moisture is still hanging around or the mold has gotten deep inside the silicone. Try replacing the sealant. If that doesn’t work — call ERX.

Q: How do I remove old silicone sealant?
A: You’ll need a razor blade or silicone scraper. Cut along the edges and peel it up carefully. Once it’s gone, clean the area and let it dry before resealing.

Q: Is all black mold toxic?
A: Not always, but it’s better to be safe. Some types can cause health issues, so treat it seriously.

Q: Should I call ERX for a small mold issue?
A: You can, and we’re always happy to help! But if it’s a small spot, try cleaning it first. If it spreads or smells strong, call us at (866)-217-7903.


Final Thoughts

Mold in your silicone sealant might not seem like a big deal… until it won’t go away. Cleaning it the right way helps stop it from spreading and protects your health too. If you ever feel unsure or overwhelmed, ERX has your back. We handle all kinds of mold — from tiny corners to full-blown infestations.

Keep your bathroom fresh, dry, and clean. And remember — mold waits for no one 😤

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