Bhg
  • Shop
  • News
  • Food
  • DIY
  • Garden
  • Renovating
  • Decorating
  • Health
  • TV
  • Hard to Find
Bhg
  • Shop
  • News
  • Food
  • DIY
  • Garden
  • Renovating
  • Decorating
  • Health
  • TV
  • Hard to Find
Subscribe
  1. Home
  2. DIY

How to prevent mould growing after water damage

Stop dangerous black mould in its tracks. - by Livia Gamble
  • 07 Jul 2022

The chance of mould growing in your home after water damage is high, but it doesn't have to be. 

Mould growth depends on many factors, including how quickly you jumped into action after the rain finally stopped. 

Watch: Ceiling mould paint prep

Shani Troubady, Air Quality Applied Scientist at Aeris Environmental, says, "In the right conditions, mould can develop within 24 hours." 

She adds: "Most fungi can start growing on surfaces with a wood moisture content of 16% and above and other surfaces such as carpets, plasterboard walls and ceilings, as well as furniture such as lounge and desk chairs."

Here's what you can do to try and stop mould growth in its tracks. 

cleaning dangerous mould
Getty

How to prevent toxic mould after water damage

Mould produces tiny particles called spores which are carried in the air. If the spores land on a surface with the right conditions, mould will grow. 

Here's what you need to do:

  • Remove all excess water from your home. Shani says to keep moisture levels low and ventilation high (turn on exhaust fan/open windows during/after showers).
  • Depending on the damage, you may need to remove damp carpet and flooring. Alternatively, here is a guide on how to dry the carpet quickly. 
  • Next, you will need to wipe down and disinfect walls, floors and other surfaces.

It's a big job - but it will be worth it. 

Types of mould

There are over 100,000 different species of mould. Some mould spores are harmless, while others, like black mould spores, have the potential to be toxic. 

"There are studies indicating that certain moulds are potential toxic producers," says Shani. 

"Some of the most commonly known potentially mycotoxic genera that I am aware of are Aspergillus, Penicillium, Stachybotrys, Chaetomium, Fusarium, Cladosporium (Asp & Pen being the main culprits as per several Australian references/guidelines)."

How do you know if mould is dangerous?

That said, regardless of whether your mould is black or green, Shani says all mould has the potential to be toxic, depending on a variety of factors. 

"Some of the main reasons a mould may be dangerous to an individual are the prevalence or concentrations of mould (the higher the concentration or, the longer the exposure time—the more likely it will affect occupants), says Shani. 

"Or if the individual is immuno-compromised and is more at risk of reaction to mycotoxins."

bathroom mould
Getty

Can breathing in mould harm you? 

As we know, mould spores fly around in the air and may cause health problems if inhaled. 

"Mycotoxic fungi may affect individuals in different ways—some common effects include respiratory responses such as coughing, sneezing, and other effects like fatigue and nausea," says Shani. 

"It's important to note that the point at which mould becomes dangerous to individual health is unknown since individuals react differently."

How to spot and get rid of dangerous mould

It's pretty easy to spot mould growing in your home.

"Mould may be sighted on several materials throughout the home, but are usually in areas with water sources (bathroom, kitchen) and grow easier on porous materials," says Shani.

"Mould may also be identified by a musty smell."

As for the best way to remove mould, Shani says, "Antimicrobial products and treatments and minimising high humidity and temperatures will help to prevent mould."

You may also like:

The best mould removal products

This easy hack will remove black mould from any bathroom

The top eight spots where mould is hiding in your house

  • DIY
  • Health
Livia Gamble
Based in Newcastle, Livia Gamble will not sleep until she has discovered every possible way to use bi-carb soda and vinegar. When she isn’t reporting on ways to improve your home and garden, she can be found knitting socks (by choice) and will never say no to pizza.

Treat yourself to a subscription-Save up to 25%

Plus, your chance to win

Subscribe Now
Treat yourself to a subscription

Treat yourself to a subscription-Save up to 25%

Plus, your chance to win

Subscribe Now
Treat yourself to a subscription

Recommended to you

YOU’LL NEED A WEDGE TO HANG THAT DOOR
Watch 6:32

YOU’LL NEED A WEDGE TO HANG THAT DOOR

{headline}

{headline}

Do this for 15 minutes every day to stop bathroom mould from growing

Do this for 15 minutes every day to stop bathroom mould from growing

The easy way to detect invisible mould - and how to get rid of it

The easy way to detect invisible mould - and how to get rid of it

Ceiling mould: easy step-by-step instructions for removing black spots

Ceiling mould: easy step-by-step instructions for removing black spots

Got mould? How to clean your walls, ceiling and clothes with one spray

Got mould? How to clean your walls, ceiling and clothes with one spray

{headline}

{headline}

Study: why you shouldn't use detergent to remove mould from clothes

Study: why you shouldn't use detergent to remove mould from clothes

If you think your house is haunted, it could just be this

If you think your house is haunted, it could just be this

Unlikely spot mould is growing in your washing machine

Unlikely spot mould is growing in your washing machine

{headline}

{headline}

The most common mistake people make when removing mould

The most common mistake people make when removing mould

How to remove mould

How to remove mould

Can mouldy carpet be saved? Here's what you need to know

Can mouldy carpet be saved? Here's what you need to know

How to dry the carpet quickly

How to dry the carpet quickly

How to remove mould from your plant's soil and leaves

How to remove mould from your plant's soil and leaves

DIY dehumidifier: 5 simple ways to reduce moisture in your home

DIY dehumidifier: 5 simple ways to reduce moisture in your home

How to stop condensation on windows

How to stop condensation on windows

Bhg
  • About Us
  • Subscribe Today
  • Contact Us
  • Terms and Conditions
  • Privacy Policy
Bhg Magazine Subscribe
  • About Us
  • Subscribe Today
  • Contact Us
  • Terms and Conditions
  • Privacy Policy

Brands

  • All Recipes
  • BHG Shop
  • Girlfriend
  • Home Beautiful
  • New Idea
  • New Idea Food
  • Practical Parenting

Our Network

  • marie claire
  • Beauty Crew
  • Who
  • Women's Weekly Food
  • Bounty Parents
  • That’s Life
  • Perth Now
  • The West Australian
  • 7Plus
  • 7mate
  • 7NEWS
  • 7Sport
  • Sunrise
  • Starts at 60
  • Hard to Find
© 2022 Are Media PTY LTD
All products are independently selected, tested or recommended by our team of experts.If you buy something, we may earn an affiliate commission.
Get more from Better Homes and Gardens

Magazine Subscription Offer

Treat yourself to a subscription-Save up to 25%

Shop This Offer
Treat yourself to a subscription