var _useState = React.useState; /** * MouldFAQ — Educational FAQ page with expandable accordion sections. * Sections: Human Health Impact, Identification, Natural Treatment, Common Mould Types. * NOTE (ADR-0007): species is descriptive, never a danger ordering. Dampness and extent * drive risk and the recommended action. Do not reintroduce a severity ranking here. * Route: /faq */ var FAQ_DATA = [ { section: 'Human Health Impact', icon: 'health_and_safety', items: [ { q: 'Is mould dangerous to my health?', a: 'It can be, and the effects that are best established are respiratory and allergic \u2014 irritation, allergy symptoms, and aggravation of asthma. Damp, mouldy housing is consistently associated with these outcomes, particularly in children. People with asthma or allergies, weakened immune systems, infants and older adults are the most affected. Claims of wider systemic illness from household mould are not well supported by current evidence. If you are worried about symptoms, that is a conversation for your doctor, not an app.' }, { q: 'What is Black Mould?', a: 'Stachybotrys chartarum is the mould most people have heard of. It needs sustained wetness \u2014 more than most moulds \u2014 so finding it reliably signals a real water problem, and that is the most useful thing about it. It can produce mycotoxins under some conditions, though producing them is not automatic. Claims linking it to chronic fatigue or neurological illness are contested and not supported by the weight of current evidence. Many dark moulds are mistaken for it, and no one can identify it from a photograph.' }, { q: 'What are the symptoms of mould exposure?', a: 'Common symptoms include coughing, wheezing, asthma attacks, eye irritation, skin rashes, nasal congestion, and throat irritation. These can mimic allergies or flu-like symptoms, making mould easy to overlook.' }, { q: 'Which types of mould are most common indoors?', a: 'Cladosporium, Penicillium, Aspergillus and Alternaria turn up most often in homes; Stachybotrys is less common and needs sustained wetness. Ranking them by danger is not something the evidence supports \u2014 for almost every household decision, how wet the area is and how far the growth extends matter far more than which organism it is.' }, { q: 'Can mould affect my pets?', a: 'Yes. Pets can experience respiratory issues, lethargy, and allergic reactions from mould exposure. Small animals and birds are particularly sensitive to airborne mould spores.' }, { q: 'How quickly can mould affect my health?', a: 'It varies a great deal between people. Someone already sensitised may react quickly, while others live with damp for long periods without noticeable symptoms. We cannot tell you whether your symptoms are caused by mould \u2014 many conditions produce the same complaints, and that assessment needs a doctor who can examine you.' }, ], }, { section: 'Identification of Mould', icon: 'search', items: [ { q: 'How do I know if I have mould?', a: 'Look for visible discolouration on walls, ceilings, and corners — often appearing as black, green, or white patches. A persistent musty smell is one of the earliest indicators, even when mould is not visible.' }, { q: 'Where does mould commonly grow?', a: 'Mould thrives in damp, poorly ventilated areas: bathrooms, kitchens, basements, laundry rooms, around windows with condensation, behind furniture against external walls, and in roof spaces with leaks.' }, { q: 'What does mould look like?', a: 'Mould can appear as fuzzy, slimy, or powdery patches in black, green, white, orange, or brown. It often starts as small spots that spread outward. Early-stage mould can look like dirt or staining.' }, { q: 'How can I tell the difference between mould and dirt?', a: 'Apply a drop of household bleach to the spot for testing, do not use bleach to clean mould. If it lightens after a few minutes, it is likely mould. Dirt will not change colour. However, this test damages surfaces, so use it sparingly.' }, { q: 'Can mould be hidden inside walls?', a: 'Yes. Mould can grow behind wallpaper, inside wall cavities, under carpets, and in ceiling spaces. Signs include musty odours, unexplained health symptoms, and bubbling or peeling paint.' }, { q: 'How fast does mould grow?', a: 'Mould can begin growing within 24 to 48 hours on damp surfaces. Penicillium is particularly fast-growing. This is why addressing water damage immediately is critical.' }, ], }, { section: 'Natural Treatment & Remediation', icon: 'eco', items: [ { q: 'Can I clean mould myself?', a: 'Yes, for small areas under 1 square metre. Wear a P2 respirator mask, rubber gloves, and safety glasses. Use damp cloths or microfibre to trap spores — never dry brush or vacuum dry mould.' }, { q: 'What natural solutions help remove mould?', a: 'White vinegar (about 3 parts vinegar to 1 part water) and tea tree oil (roughly 1 tsp per cup of water) are both commonly used and avoid the fumes of chemical cleaners. Either can remove growth from hard, non-porous surfaces. Neither fixes the underlying problem: if the material stays damp, mould returns regardless of what you cleaned it with.' }, { q: 'How do I prevent mould from coming back?', a: 'Address the moisture source first — fix leaks, improve ventilation, and keep humidity below 50%. Open windows daily, use exhaust fans, keep furniture away from walls, and wipe condensation from surfaces regularly.' }, { q: 'Should I throw away mouldy items?', a: 'Porous items like cushions, mattresses, carpets, and soft furnishings that are heavily contaminated usually cannot be cleaned effectively and should be disposed of. Hard, non-porous surfaces can be cleaned.' }, { q: 'Is vinegar better than bleach for mould?', a: 'For most household situations vinegar is a reasonable choice, and it avoids bleach\u2019s fumes and surface damage. Bleach is mostly water, so on porous materials it can leave moisture behind while removing the visible staining \u2014 which looks like success without being it. But the honest answer is that no cleaner solves a damp problem. On porous materials that have stayed wet, removal and replacement is often the only durable fix.' }, { q: 'When should I call a professional?', a: 'Call a professional if mould covers more than about 1 square metre, if it returns quickly after cleaning (which indicates structural dampness), if it is in air conditioning or ventilation, if you suspect hidden growth, or if anyone in the household has asthma, a weakened immune system or other health vulnerability. These are guidelines, not a test you have to pass \u2014 you can see your situation and we cannot. If you are in any doubt, or you simply want to understand your own risk factors better, getting a professional assessment is worth it.' }, { q: 'How do I improve ventilation to prevent mould?', a: 'Open windows for at least 15 minutes daily, use exhaust fans in bathrooms and kitchens during and after use, ensure dryer vents exhaust outside, and consider a dehumidifier for persistently damp rooms.' }, { q: 'Can indoor plants cause mould?', a: 'Overwatered indoor plants can contribute to humidity and mould growth in the soil and surrounding area. If you have a mould problem, reduce the number of indoor plants and avoid overwatering.' }, ], }, ]; /** * Ten moulds commonly found in Australian homes, ordered by how often they occur — * NOT by danger. See ADR-0007. * Each entry: name, subtitle, intro, appearance, location, spread, health. * Content written from a trusted mycological expert perspective — * authoritative and accurate, but approachable for all personas. */ var SPECIES_DATA = [ { name: 'Cladosporium', subtitle: 'Olive-Green to Black Mould', rank: 1, intro: 'Cladosporium is one of the most common moulds found both outdoors and indoors. It is often mistaken for toxic black mould due to its dark colouring, but it is a different species with generally lower health risks — though it is still worth taking seriously, particularly for anyone with allergies.', appearance: 'Olive green to brown or black, with a velvety or suede-like texture. Colonies tend to be dense and can spread across large surface areas.', location: 'Starts outdoors on plant material and enters homes through open windows and doors. Once inside, it settles on wooden surfaces, carpeting, insulation, bathroom ceilings, wallpaper, and anywhere with poor ventilation.', spread: 'Spreads through airborne spores that travel easily on air currents, particularly when the mould is disturbed. It can establish itself in both warm and cool environments, which makes it unusually versatile.', health: 'Causes respiratory symptoms including coughing, sneezing, itchy eyes, and a runny nose. Can also cause dry skin and, in some cases, a skin rash on direct contact. Most problematic for people who are specifically allergic to this species.', }, { name: 'Penicillium', subtitle: 'Fast-Spreading Blue-Green Mould', rank: 2, intro: 'You have almost certainly seen Penicillium — it is the blue-green fuzz that appears on bread, fruit, and cheese. While it gave us the antibiotic penicillin, the household varieties are not beneficial to live with. It spreads faster than most other moulds and can establish itself in a wide range of materials.', appearance: 'Distinctive blue-green or teal colour with a fuzzy, velvety texture. Colonies spread outward in circular patterns.', location: 'Loves organic materials: bread, fruit, soft furnishings, mattresses, and upholstery. Also found on insulation, carpet, and wallpaper. It does not need as much moisture as some other moulds, which makes it particularly adaptable.', spread: 'Airborne spores disperse rapidly when the mould or its food source is disturbed. With the right conditions, a new colony can establish itself and begin spreading within 24 to 48 hours.', health: 'A common trigger for sinus infections, lung inflammation, and hay fever-like symptoms. People with asthma or existing respiratory conditions may find their symptoms worsen significantly in a home with Penicillium growth.', }, { name: 'Aspergillus', subtitle: 'Common Indoor Mould', rank: 3, intro: 'Aspergillus is one of the most widespread moulds on the planet — there are over 180 known species, and most of us breathe in its spores every day without any ill effect. However, certain strains can cause serious infections, particularly in people whose immune systems are not functioning at full strength.', appearance: 'Varies considerably by species — you may see yellow, green, brown, or black colonies. It often has a fluffy or powdery appearance due to the dense mass of spores it produces.', location: 'Found in soil, compost, and decaying plant matter outdoors. Indoors, it colonises damp walls, air conditioning systems, food items, and anywhere with persistent moisture.', spread: 'Produces enormous quantities of lightweight spores that become airborne very easily. These can travel long distances and settle wherever conditions are right.', health: 'Can cause allergic reactions, lung infections, and a condition called aspergillosis — a serious respiratory illness. People with asthma, cystic fibrosis, or a compromised immune system (including those on chemotherapy or immunosuppressant medication) are at significantly higher risk of severe infection.', }, { name: 'Alternaria', subtitle: 'Common Allergy-Triggering Mould', rank: 4, intro: 'Alternaria is one of the most common causes of mould-related allergies worldwide. It is found both outdoors and indoors, and while it is not typically associated with the severe toxicity of black mould, it is a significant trigger for asthma and allergic reactions — particularly in children.', appearance: 'Dark brown to black with a downy or wool-like texture. Colonies can look similar to other dark moulds, so identification by appearance alone is not always reliable.', location: 'Outdoors, it is found on plants, soil, and decaying vegetation. Indoors, it favours damp spots — showers, under leaking pipes, and in ductwork or upholstery where moisture can accumulate.', spread: 'Spreads primarily through airborne spores carried by wind or indoor air currents. Spores become particularly active when the mould or its food source is disturbed.', health: 'One of the most common triggers for allergic reactions and asthma. Hay fever-like symptoms are typical after exposure. Long-term exposure has been linked to the development of asthma in people who did not previously have it.', }, { name: 'Aureobasidium Pullulans', subtitle: 'Pink-to-Black Surface Mould', rank: 5, intro: 'Aureobasidium is one of the more visually distinctive moulds because it changes colour as it ages — starting pink or light brown and darkening to black over time. It is commonly found on damp surfaces around the home and, while not as toxic as some species, it can cause infections and allergic reactions.', appearance: 'Young colonies appear pink or light brown; mature colonies turn dark brown to black. This colour change can make it look like different moulds at different stages of growth.', location: 'Commonly found on damp wooden surfaces, painted walls, wallpaper, and window frames. It thrives wherever there is persistent surface moisture.', spread: 'Releases spores that can become airborne or attach to surfaces and objects, spreading to new areas when conditions are favourable.', health: 'Can cause allergic reactions, skin infections, and eye infections. Particularly problematic for people with existing respiratory conditions or compromised immune systems. Direct skin contact with mature colonies should be avoided.', }, { name: 'Fusarium', subtitle: 'Pink-Red Water-Damage Mould', rank: 6, intro: 'Fusarium is unusual in that it thrives in cooler, wetter conditions than most moulds — making it a particular concern after flooding or in homes with persistent damp. It is also a significant agricultural pest, damaging cereal crops worldwide. Indoors, it can spread rapidly and produce mycotoxins that pose real health risks.', appearance: 'Typically pink, red, or purple in colour with a woolly or cottony texture. The colouring makes it relatively distinctive compared to the more common black and green moulds.', location: 'Found in soil and on plants outdoors. Indoors, it colonises water-damaged carpeting, wallpaper, and other soft materials. It can also grow on food items.', spread: 'Releases airborne spores that can be inhaled or settle on surfaces. It spreads quickly in damp conditions and can establish new colonies rapidly.', health: 'Exposure can cause skin infections, eye infections, and allergic reactions. In people with weakened immune systems, it can lead to fusariosis — a serious systemic infection. Inhalation of spores can also trigger respiratory problems.', }, { name: 'Trichoderma', subtitle: 'Damp Wood and Soil Mould', rank: 7, intro: 'Trichoderma is well known in agriculture as a beneficial organism that promotes plant health — but certain species produce potent mycotoxins that can be harmful to humans. In homes, it tends to appear on damp wood and organic materials, and its presence often indicates a moisture problem that needs addressing.', appearance: 'Often white with a green patch or spore mass in the centre. The texture is typically woolly or cottony, and the green colouring becomes more pronounced as the colony matures.', location: 'Most commonly found in soil, but also grows on damp wood, paper, and other organic materials indoors. Particularly common in homes with water damage or poor drainage.', spread: 'Produces large numbers of lightweight spores that disperse easily on air currents. These spores can travel throughout a building and establish new colonies wherever moisture is present.', health: 'Some species produce mycotoxins that can cause allergic reactions, sinus infections, and respiratory issues if inhaled or if they come into contact with skin. People with existing respiratory conditions are at greater risk.', }, { name: 'Stachybotrys Chartarum', subtitle: 'Black Mould', rank: 8, intro: 'This is the mould most people have heard of, and for good reason. Stachybotrys chartarum produces mycotoxins — chemical compounds that can cause serious health problems with prolonged exposure. It is not among the more common moulds you will encounter, and its main practical significance is what its presence implies about how wet the material has been.', appearance: 'Dark black or greenish-black with a distinctly slimy, wet surface. It also produces a strong, musty odour — if you can smell something damp and earthy in a room that has had water damage, this is worth investigating.', location: 'It needs constant moisture to survive, so you will find it in places that stay wet: around leaking pipes, on shower tiles with persistent dampness, on water-damaged drywall, and in basements or crawl spaces with flooding history.', spread: 'Releases spores into the air, which can be inhaled or absorbed through the skin. Spores become particularly active when the mould is disturbed — for example, during cleaning or renovation work.', health: 'Reported effects are largely allergic and respiratory: hay fever-like reactions (runny nose, watery eyes, sneezing), asthma symptoms and sinus irritation. Reports linking it to chronic fatigue or neurological illness are contested and not supported by the weight of current evidence. Children, the elderly, and anyone with a respiratory condition or weakened immune system are the most likely to notice effects.', }, { name: 'Chaetomium', subtitle: 'Water-Damage Indicator Mould', rank: 9, intro: 'Chaetomium is a reliable indicator that a building has had serious water damage. It has a distinctive musty smell and tends to appear in homes after flooding or persistent leaks. Its presence often signals that structural materials have been wet for an extended period.', appearance: 'Cottony in texture, starting white and gradually changing to grey, brown, or even black as it matures. The colour change over time can make it look like several different moulds at different stages.', location: 'Prefers water-damaged materials — particularly wet drywall, wallpaper, and baseboards. Commonly found in basements, bathrooms, and anywhere that has experienced flooding or prolonged moisture.', spread: 'Spreads through airborne spores, especially in environments with ongoing water damage. Spores settle on damp organic materials and establish new colonies quickly.', health: 'Can cause skin and nail infections. Anyone with a compromised immune system should treat Chaetomium growth as a priority. Its real significance is as a marker: it needs sustained wetness, so finding it points to a water problem that needs fixing.', }, { name: 'Memnoniella', subtitle: 'Often Confused with Black Mould', rank: 10, intro: 'Memnoniella is closely related to Stachybotrys chartarum and is often found growing alongside it in water-damaged buildings. It produces similar mycotoxins and poses comparable health risks, yet it receives far less public attention. If you find what looks like black mould, Memnoniella may be present too.', appearance: 'Dark black or dark brown, with a similar slimy or powdery appearance to Stachybotrys. The two are frequently confused and often co-exist in the same environment.', location: 'Found in the same environments as black mould — water-damaged drywall, cellulose-rich materials, and areas with persistent moisture. Basements, bathrooms, and areas around leaking pipes are common sites.', spread: 'Releases spores into the air, particularly when disturbed. Spores can be inhaled or absorbed through the skin.', health: 'Produces mycotoxins similar to those of Stachybotrys chartarum. Health effects include respiratory problems, fatigue, headaches, and allergic reactions. As with black mould, children, the elderly, and immunocompromised individuals are most at risk.', }, ]; var MouldFAQ = function () { // Track which FAQ items are expanded: { 'sectionIndex-itemIndex': true } var expandedState = _useState({}); var expanded = expandedState[0]; var setExpanded = expandedState[1]; var toggle = GroupingUtils.createAccordionToggle(setExpanded); // Track which species items are expanded: { speciesIndex: true } var speciesExpandedState = _useState({}); var speciesExpanded = speciesExpandedState[0]; var setSpeciesExpanded = speciesExpandedState[1]; var toggleSpecies = GroupingUtils.createAccordionToggle(setSpeciesExpanded); // Neutral list numbering. Deliberately NOT severity-coded (ADR-0007): appearance and // species do not indicate danger, dampness and extent do. var rankStyle = function () { return { dot: '#3d5a44', label: '' }; }; return (
{/* Intro */}

Common questions about mould for homeowners, renters, landlords, cleaners, and remediation specialists.

{/* FAQ Sections */}
{FAQ_DATA.map(function (section, si) { return (
{section.icon}

{section.section}

{section.items.map(function (item, ii) { var key = si + '-' + ii; var isOpen = expanded[key] || false; return (
{isOpen && (

{item.a}

)}
); })}
); })} {/* ── Top 10 Harmful Mould Types ── */}
biotech

Common Mould Types

A guide to the mould species most likely to affect your health: what they look like, where they hide, and what to watch out for.

{SPECIES_DATA.map(function (species, idx) { var key = 'species-' + idx; var isOpen = speciesExpanded[key] || false; var rs = rankStyle(species.rank); return (
{/* Accordion trigger */} {/* Expanded content */} {isOpen && (
{/* Risk label */}
{rs.label}
{/* Intro paragraph */}

{species.intro}

{/* Four structured sub-points */}
visibility

What it looks like

{species.appearance}

location_on

Where it grows

{species.location}

air

How it spreads

{species.spread}

health_and_safety

Health risks

{species.health}

)}
); })}
{/* Disclaimer */}

This information is for general guidance only and should not replace professional medical or building advice. If you suspect serious mould contamination, consult a qualified specialist.

); }; window.MouldFAQ = MouldFAQ;