top of page

Is Black Bathroom Mould Dangerous?

Writer's picture: Reseal UKReseal UK
2 days ago3 min read

Black bathroom mould isn’t just an unsightly nuisance—it can be a serious health hazard. Found on tiles, grout, and silicone, mould thrives in damp conditions and can release harmful spores into the air. If left untreated, these spores can cause a range of health issues, particularly for vulnerable individuals. In this guide, we’ll explore the risks associated with black mould, who is most at risk, how to remove it, and how to prevent it from returning.


Why is Black Mould Dangerous?


Black mould (Stachybotrys chartarum) produces airborne spores that, when inhaled, can cause health problems ranging from mild irritation to severe respiratory issues. The most common effects of exposure include:


  • Respiratory Problems – Mould spores can irritate the lungs, causing coughing, wheezing, and shortness of breath.

  • Allergic Reactions – Many people experience sneezing, a runny nose, and itchy eyes when exposed to mould.

  • Aggravation of Asthma and Other Conditions – Those with asthma or other respiratory diseases may find their symptoms worsen.

  • Headaches and Fatigue – Long-term exposure can lead to persistent headaches and a general feeling of tiredness.


Who is Most Vulnerable?


While mould exposure can be unpleasant for anyone, certain groups are at higher risk of experiencing severe health effects, including:


  • Young children and infants – Their developing respiratory systems make them more susceptible to mould-related illnesses.

  • Elderly individuals – As the immune system weakens with age, older adults may struggle to fight off infections caused by mould exposure.

  • People with asthma or allergies – Mould can act as a trigger, leading to increased symptoms and difficulty breathing.

  • Those with weakened immune systems – Individuals with chronic illnesses, undergoing chemotherapy, or with conditions like COPD are more likely to suffer severe reactions.


How to Remove Black Mould from Your Bathroom


If you’ve noticed black mould in your bathroom, follow these steps to remove it safely:


What You’ll Need:


  • White vinegar or a mould removal spray

  • Baking soda (optional)

  • An old toothbrush or scrubbing brush

  • Microfiber cloths

  • Protective gloves and a mask (to avoid inhaling spores)


Steps to Remove Mould from Tiles and Grout:


  1. Ventilate the Area – Open windows and doors to improve airflow and reduce moisture build-up.

  2. Apply Mould Remover – Spray white vinegar or a dedicated mould removal product directly onto the affected areas.

  3. Scrub the Surface – Use a toothbrush or scrubbing brush to remove the mould from tiles and grout.

  4. Wipe Clean and Dry – Use a microfiber cloth to wipe away residue and ensure the area is completely dry.

  5. Repeat if Necessary – Stubborn mould may require multiple treatments.


What to Do About Mouldy Bathroom Silicone


Unlike grout or tiles, once mould has penetrated bathroom silicone, it cannot be effectively cleaned. Mould stains on silicone sealant indicate it has absorbed moisture, making it impossible to remove entirely. The only solution is to remove and replace the mouldy silicone.


Steps to Replace Mouldy Silicone:


  1. Remove Old Silicone – Use a sharp knife or silicone removal tool to carefully cut away the affected sealant.

  2. Clean the Area – Ensure the surface is dry and free from debris before applying new silicone.

  3. Apply New Sealant – Use a high-quality anti-mould silicone to reseal your bath or shower.

  4. Allow to Cure – Follow the manufacturer’s instructions for drying time before exposing the area to water.


How to Prevent Bathroom Mould from Coming Back


Prevention is key when it comes to mould control. Follow these tips to keep your bathroom mould-free:


  • Improve Ventilation – Use an extractor fan or open windows to reduce humidity levels.

  • Wipe Down Surfaces – Regularly dry shower walls, tiles, and mirrors after use.

  • Fix Leaks Promptly – Address any dripping taps or leaks that could encourage mould growth.

  • Use a Mould-Resistant Sealant – When resealing, opt for a high-quality anti-mould silicone.

  • Clean Regularly – Keep your bathroom clean with anti-mould sprays or a vinegar solution.


Need Help Resealing Your Bath or Shower?


If your bathroom silicone is mouldy and needs replacing, our expert team at Reseal UK can help. We provide professional resealing services to restore your bath or shower to a fresh, clean condition.

 
 
 

Comments

bottom of page