Scary Dangers of Mould & Mildew. Stop it Spreading Now!

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Scary Dangers of Mould & Mildew: How Sealing Shower Can Stop it Spreading Now!

Mould and mildew are more than just unsightly patches on your bathroom tiles. They pose a significant threat to your health and the structural integrity of your home. In this blog post, we’ll explore the hidden dangers of mould and mildew, emphasising the importance of sealing your shower and regular leak detection tests. Don’t let these silent intruders compromise your well-being or your property’s value.


The Health Hazards of Mould and Mildew:

Moulds produce allergens (substances that can cause an allergic reaction), irritants and, sometimes, toxic substances. Inhaling or touching mould spores may cause an allergic reaction, such as sneezing, a runny nose, red eyes and skin rash. Moulds can also cause asthma attacks.

Respiratory Issues: Mould and mildew release tiny spores into the air, which can be inhaled, leading to various respiratory problems such as coughing, sneezing, and throat irritation. For those with pre-existing conditions like asthma, these spores can trigger severe attacks.

Allergies: Mould spores are notorious allergens. Exposure to mould can cause or exacerbate allergies, leading to symptoms like itchy eyes, runny nose, and skin rashes.

Infections: Certain types of mould can cause skin and lung infections, particularly in individuals with weakened immune systems. Protecting your home from mould growth is crucial to prevent these infections.


The Structural Threat:

Damage to Building Materials: Mould and mildew can eat away at various building materials, including wood and drywall. Over time, this can weaken the structural integrity of your home, leading to costly repairs.

Decreased Property Value: A mould-infested home can be challenging to sell and may lose significant value in the real estate market. Addressing mould issues promptly is essential for maintaining your property’s worth.

Preventing Mould & Mildew

  1. Maintain Proper Ventilation: Ensure that your bathroom is adequately ventilated. Use exhaust fans or open windows during and after showers to reduce humidity and moisture buildup.
  2. Regular Cleaning: Develop a routine for cleaning your bathroom. Pay special attention to areas prone to mould growth, such as tile grout, shower curtains, and silicone seals.
  3. Address Leaks Promptly: Fix any leaks or plumbing issues as soon as they are detected. Leaking pipes, faucets, or showers create ideal conditions for mould growth.
  4. Use Mould-Resistant Products: Consider using mould-resistant paint, tiles, and grout in your bathroom. These products are designed to inhibit mould growth.
  5. Seal Grout Lines: Seal the grout lines in your tiles to prevent moisture from seeping in and promoting mould growth.
  6. Dry Wet Surfaces: After showering or bathing, wipe down wet surfaces, including walls, tiles, and shower curtains. Use a squeegee to remove excess water from shower walls.
  7. Regularly Replace Shower Curtains: If you use a shower curtain, replace it regularly, as it can trap moisture and become a breeding ground for mould.
  8. Keep the Bathroom Dry: Ensure that your bathroom remains dry between uses. Hang up wet towels and bathmats, and don’t leave damp clothing or bath toys lying around.
  9. Use a Dehumidifier: In particularly humid climates, consider using a dehumidifier in your bathroom to reduce moisture levels.
  10. Keep Plants Out of the Bathroom: Indoor plants can increase humidity levels. Consider relocating them to other areas of your home.
  11. Regularly Inspect and Clean Drainage: Ensure that your shower and sink drains are free from debris to allow proper water drainage.
  12. Use Natural Cleaners: Consider using natural cleaning products like vinegar or hydrogen peroxide, which can help prevent mould growth without harsh chemicals.

Preventing Mould and Mildew with Shower Sealing:

Sealing Shower Grout and Tiles: Properly sealed shower grout and tiles create a barrier that prevents moisture from seeping into walls and floors. This essential step is highly effective in inhibiting mould growth. 

Regular Leak Detection Tests: Conducting leak detection tests ensures early identification of potential water leaks. Timely repairs can prevent water damage and subsequent mould infestations.

 Ensure all works are done to comply to Australian Standards AS3740

Diagnosing Hidden Mould & Rot Behind Shower

  • Investigate the crawlspace or room below your shower.  If the leak is quite significant, this area will show signs of water damage.
  • Inspect the adjacent wall of your shower also.  If your shower shares a common wall with a bedroom or closet,  ALSS Bathrooms will be able to detect water leakage by cutting a small hole into the sheeting to see if there is any water damage. If so, a shower repair needs to be conducted – either by sealing shower or by removing tiles depending on the severity of the damage.

HIDDEN Mould Damage

Surface mould growth is annoying, ugly and hard to clean, however, if a lot of moisture has gone behind your shower wall cavity, structural damage can occur.  This is a real nightmare and simply wiping the area is not the solution. This generally occurs when there is evidence of:

  1. Leaky cold & hot water supply lines.
  2. Cracked tile & grout.
  3. Vapour drive.


The dangers of mould and mildew in your home extend beyond cosmetic concerns. They can jeopardise your health and the structural integrity of your property. By prioritising shower sealing and leak detection tests, you can safeguard your family’s well-being and your home’s long-term value. Don’t let these silent threats go unnoticed—take action today to protect your home sweet home.

Now Is the time to call ALSS Bathrooms on 1300 556 775

ALSS Bathrooms – Servicing Sydney Metro. Transform your bathroom with our comprehensive services. From renovations to leak repairs, we deliver extraordinary results. Our skilled team fixes shower leaks, damaged tiles, and waterproofing issues with precision and expertise. Focused on quality and detail, we create stunning bathrooms that exceed expectations.