What Type of Mould Is This?
Answer three quick questions about the mould you've found and get an instant identification with health risk rating, DIY safety guidance, and next steps.
What colour is the mould?
Select the closest match to what you can see.
How to Identify Mould in Your Brisbane Home
Mould comes in many forms, and not all of it is the same. Different species pose different health risks, respond to different treatments, and grow in different conditions. Being able to identify the type of mould in your home is the first step toward safe and effective removal.
Brisbane's subtropical climate, with warm temperatures and humidity levels that regularly exceed 70%, creates ideal growing conditions for dozens of mould species. The most common types found in Brisbane homes include Stachybotrys (toxic black mould), Aspergillus, Cladosporium, Penicillium, and Aureobasidium. Each has distinct visual characteristics that can help with identification.
Understanding Mould Colours and What They Mean
Mould colour is the most immediately noticeable feature and provides important clues about the species involved. Black mould is often the most concerning because it may indicate Stachybotrys chartarum, which produces mycotoxins that can cause serious respiratory issues, chronic fatigue, and neurological symptoms. However, not all dark-coloured mould is toxic — Aspergillus niger and Cladosporium can also appear black or dark green but pose lower health risks.
White and green moulds are extremely common in Australian homes and are often found on food, walls, and timber surfaces. Pink mould, frequently seen on bathroom tiles and grout, is usually a yeast-like organism called Aureobasidium and is generally easier to manage. Yellow and brown discolouration on timber may indicate dry rot, which poses minimal health risk but can cause significant structural damage.
Why Professional Identification Matters
While visual identification provides useful guidance, it has limitations. Many mould species share similar appearances, and accurate identification often requires laboratory analysis of spore samples. This is particularly important when dealing with potentially dangerous mould species that produce mycotoxins or when occupants are experiencing health symptoms.
A professional mould inspection includes air quality testing, surface sampling, and moisture mapping to identify not just what type of mould is present but also the underlying cause. Without addressing the moisture source, mould will return regardless of how thoroughly it is cleaned. If you're unsure about the mould in your home, or if the affected area is larger than one square metre, contact a Brisbane mould specialist for a thorough assessment.