Mould in aged care facilities isn't just a maintenance issue — it's a clinical risk. Elderly residents, particularly those with respiratory conditions, compromised immune systems, or chronic illness, are significantly more vulnerable to mould-related health effects than the general population.

For facility operators, mould creates a convergence of compliance obligations, duty of care requirements, and reputational risk that demands a proactive approach.

Why aged care facilities are high-risk

Aged care environments present a unique combination of mould risk factors:

Building use patterns. Facilities operate 24/7 with constant hot water use, cooking, laundry, and bathing — all generating significant moisture. Unlike commercial buildings that empty overnight, aged care facilities never get a chance to dry out.

Resident vulnerability. The Aged Care Quality Standards require facilities to manage clinical risks. Mould exposure in elderly populations is linked to:

Respiratory infections and pneumonia
Aggravated COPD and asthma
Allergic reactions (rhinitis, dermatitis)
Aspergillosis in immunocompromised residents
General decline in respiratory function

Building age. Many aged care facilities occupy older buildings with ageing waterproofing, poor ventilation, and construction materials that are prone to moisture retention.

HVAC systems. Centralised air conditioning systems, if poorly maintained, can distribute mould spores from one contaminated area to every room in the facility. See our article on HVAC mould in commercial buildings for detailed guidance.

Compliance framework

Aged Care Quality Standards

Standard 8: Organisational Governance requires facilities to have systems for identifying and managing risks. Mould is a foreseeable environmental risk that should be covered in your risk management framework.

Standard 3: Personal Care and Clinical Care requires that clinical risks are identified and managed. For residents with respiratory conditions, mould exposure is a clinical risk.

Standard 5: Organisation's Service Environment requires that the environment is safe, comfortable, and fit for purpose. Persistent mould contamination arguably fails this standard.

Work Health and Safety

Staff are also exposed. Under WHS legislation, facility operators must ensure indoor air quality meets safe standards for workers. Cleaning staff and maintenance workers who encounter mould directly face the highest exposure.

Building codes and standards

AS/NZS 3666 covers air-handling and water systems in buildings, including requirements for maintenance, cleaning, and microbial control in HVAC systems.

A proactive mould management plan

Reactive mould management — waiting for visible growth or complaints — is inadequate for aged care environments. Facilities need a proactive plan:

1. Baseline air quality assessment

Start by understanding your current indoor air quality. Professional air sampling identifies existing mould species and spore concentrations throughout the facility. This establishes a baseline against which future monitoring is measured.

2. Moisture mapping

A professional moisture assessment identifies current and potential water ingress points — leaking plumbing, failed waterproofing, condensation zones, and inadequate drainage. Fix these first. Remediation without addressing moisture sources is temporary at best.

3. HVAC inspection and treatment

Your HVAC system is the primary distribution mechanism for airborne mould spores. Regular inspection of coils, drain pans, filters, and ductwork should be part of your maintenance schedule. Commercial-grade fogging can treat entire duct systems without taking areas offline for extended periods.

4. Ongoing air purification

SAN-AIR Aerosperse gel systems provide continuous antimicrobial air purification between maintenance cycles. Placed in air handling units and common areas, they neutralise airborne mould spores, bacteria, and viruses 24/7 for up to 3 months per cycle.

SAN-AIR is 100% natural and TGA-accredited — critical for aged care environments where chemical exposure is a concern.

5. Scheduled maintenance program

A quarterly maintenance program ensures ongoing protection:

Air quality monitoring and trend reporting
Aerosperse gel replacement
Visual inspections of high-risk areas (bathrooms, kitchens, laundry, plant rooms)
Moisture readings at known risk points
Seasonal adjustments for ventilation and humidity control

6. Documentation and reporting

Maintain records of:

Air quality test results and trends
Maintenance visits and findings
Remediation work completed
Staff training on mould identification and reporting
Incident reports related to mould complaints

These records demonstrate compliance with Aged Care Quality Standards and provide evidence of proactive risk management during audits.

Staff training

Every facility staff member should know:

How to identify mould — visual signs (discolouration, fuzzy growth) and smell (musty, damp odour)
How to report it — through your incident reporting system, not just verbally
What not to do — never scrub mould with bleach without proper PPE and containment. Disturbing mould colonies without containment releases spores into the air
When to escalate — any mould near residents with respiratory conditions should be treated as urgent

Cost considerations

Proactive mould management is significantly cheaper than reactive remediation:

A quarterly maintenance program with air quality monitoring costs a fraction of emergency remediation after contamination has spread through the HVAC system
Early detection limits the scope of treatment — a small patch behind a bathroom vanity is a minor job; the same mould left for 6 months can require wall removal and major works
Compliance failures carry their own costs — sanctions, increased scrutiny, and reputational damage

Next steps

If you operate an aged care facility and don't have a mould management plan in place, start with a professional assessment. We'll inspect your facility, test air quality, and provide a detailed report with recommendations tailored to aged care compliance requirements.

Book a facility assessment or call Russell directly to discuss your needs. We work with aged care operators across NSW, QLD, VIC, and ACT.

For multi-facility operators, our commercial and strata solutions include portfolio-scale assessment and ongoing maintenance programs.

Mould Compliance for Aged Care Facilities: What Operators Need to Know