Sources of Moisture that Contribute to Mould Growth

Sources of moisture

We are all familiar with the fact that moisture gives rise to mould, but what exactly does ‘moisture’ include. While many of us believe that mould grows after a leak, the truth is, there are several forms of moisture that could contribute to mould growth. You need to keep an eye on more than just leaks.

Let’s learn what these other sources of moisture are. This will help us be better prepared in preventing mould growth.

Hanging wet clothes

One of the common mistakes we make is hanging up wet clothes in small closed up spaces. When dampness evaporates into the air, it’s like food for mould. Homeowners, who hang their wet clothing inside their home, might face mould problems.

Living nearby a water body

If your home is located by the coast or close to a water body, there’s a possibility of mould growth in your home. This is due to naturally high humidity levels in your indoor air.

The shower

Another place where mould can grow and spread is in your bathroom, especially the shower area. Lingering moisture due to insufficient ventilation could make it a favourable environment for mould growth.


Condensation can appear on colder surfaces inside your home, such as the window, the wall, metal items or even concrete flooring. Due to the wetness, condensation makes these areas prone to mould growth.

Humidity and rainfall

If the weather has been humid or it’s the monsoon season, you might notice mould growth here in some parts of your home. When the moisture content in the air is high, mould can grow in no time.

Wet clothes and towels

We often leave piles of damp clothes or towels here and there without actually realising it could promote mould growth. Remember mould can begin to grow on them in 24 to 48 hours. To avoid this, make sure they are dry.

Leaky pipes

Something that goes unnoticed until we find a pool of water, is a pipe leak. This happens to be one of the most common reasons for mould growth. A leaky pipe can cause some serious water damage and encourage mould growth. Routine checks on water pipes can help prevent these problems.

Leaky roofs

The same goes for leaky roofs, although a leak in the roof is easier to catch as compared to a leak in the pipe – unless there’s a leak in the attic. Make sure you also check for any roof damage that could cause leaks. This could save you a lot of trouble as well as repair cost.

HVAC systems

Another perfect spot for mould to grow is the HVAC system. When it heats or cools the air, it can cause humidity problems. In addition to this, the outdoor air that is drawn into the system brings along dust, pollen and other organic materials that can act as mould food. With high moisture and food, mould can easily find a way into your home.

Lack of ventilation

Rooms that have insufficient ventilation for instance, a bathroom that has no windows. Inadequate air circulation can give rise to dampness and moist air which is conducive to mould growth.

Mould can grow and thrive in any place where there is moisture, warmth, oxygen, darkness and some organic material (like wood, paper products, cardboard, drywall, etc.). Given these conditions exist in most homes, the chances of mould growing are pretty high. Prevent mould from affecting your home and health, by keeping a watch on all the above sources of moisture and take necessary steps to keep the levels under control.

If mould has invaded your home, waste no time, contact Biosite Cleanup for expert mould testing and mould removal services. We cater to home/business owners in Goulburn, Canberra, Batemans Bay, and other areas of NSW.

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