How to detect mould in a room

HomeThe Mould BlogMould RemovalHow to detect mould in a room
September 28, 2021 in Mould Removal

Almost every home will be affected by mould at some point. Indoor mould is an all too common result of excess moisture, poor ventilation and lack of natural light. Knowing how to detect mould in a room is important because sometimes it is not immediately obvious or visible.

If left unchecked over a long period of time, mould can spread throughout a home and can even result in significant property damage.

Homeowners, tenants and property managers need to be able to detect mould immediately before it takes hold of their home or property. Any of these parties could become liable for repairs resulting from mould growth, depending on who was responsible for creating the issue.

Save yourself time, money and stress with our expert advice on how to find mould in your house. Knowing where mould grows, what it looks like and how to detect mould in a room are among the first steps you can take to prevent mould problems.

What does mould look like?

Mould is a type of fungus that forms spores. There are 100,000s of species of naturally occuring moulds. They can range in appearance based on several features like colour and growth pattern. Many indoor moulds are readily identified through their velvety/cotton texture and dusty or slimy feel.

Where does mould grow?

Indoor mould will grow in just about any area of a house, if it has an adequate supply of water/moisture and food. In addition, mould thrives in areas of poor air circulation and darkness.

Areas of the home that have indoor plumbing, are prone to humidity or condensation are ideal for mould growth because they provide an ample water source. With enough water, mould can grow in any area of the house that has organic materials like wood, paper and dust.

How to find mould in a house

If you are concerned about mould growing in your home, here are some areas to look:


Mould in bathrooms can grow in a number of different places: on walls, windows, ceilings, tiles, grout, on shower curtains, inside cabinets, etc.


Mould can grow on damp clothes, on the ceiling, walls behind washing machines and within cabinets.


Mould in kitchens can be found growing around the sink, under the sink, above stove tops, behind appliances and inside cupboards


Mould can grow in wardrobes, on clothes, shoes, blinds and can even grow on or within the very mattress you sleep on.


The condensation that collects on windows, especially during the colder months, makes any window and window furnishings a prime location for mould growth.

Walls and ceilings

Hot air rises and causes condensation formation on walls and ceilings. This particularly affects bathrooms, laundries and kitchens.

How to detect mould in a room

If you’re concerned about mould in your home, the good news is that mould growth usually has obvious signs. Knowing how to detect mould in a room involves using your senses and common sense.

Musty smells

Musty smells are one of the most important first signs of mould growth. Sometimes smells are present before mould is even visible.

Discolouration, spots & stains

Many indoor mould species will form dark or discoloured spots and clusters on areas of grouting between tiles; on walls/ceilings; carpeting; upholstered furniture; wooden furniture; and wooden home features.

Flaking paint or peeling wallpaper

Mould thrives on organic materials like wood and paper. As mould grows, it decays these materials. This results in damaged paint work on walls and ceilings.

Faulty plumbing or leaks

Even before mould growth is identified, if you have faulty plumbing or outside leaks leading to the presence of extra water, you can guarantee mould will soon follow. Be vigilant and fix any plumbing problems or leaks immediately before mould takes hold.

Professional mould inspections and removal for your house

Be vigilant against mould. Recognise the signs and know how to find mould in your house before it becomes a serious problem.

However, if mould remains elusive despite your best efforts to track it down. Mould Removal Australia is here to help! We are experts at tracking down any mould problems and provide inspections and reports.

Our Mould Inspections involve a visual inspection of the property by our qualified Mould Inspectors, followed by our Mould Causation and Prevention Report (with photos) targeting the cause/s of the mould issue, along with suggestions of suitable future prevention/control measures, specific to your property.

For more information about mould and our services see our website.

Get a free online quote

If you are recognising the signs of mould in your home but are unsure how to proceed contact Mould Removal Australia today.

Mould Removal Australia services locations across Sydney, Blue Mountains, Wollongong, Central Coast, Newcastle, Hunter Valley and Port Stephens areas.

To get a free online quote, book an appointment or ask any mould-related questions, please get in touch using our Contact Form or call us on 1300 681 034 and we’ll get back to you very soon.