Mould, Moisture and Microbiology in Sydney and the Blue Mountains
Independent mould and indoor air quality assessments to identify causes, assess health risks, and support effective remediation.
Why Mould and Moisture Problems Matter in Sydney and the Blue Mountains
In Sydney and the Blue Mountains, mould growth and moisture damage are common across both heritage homes and modern buildings. From water ingress and roof leaks to poor ventilation and construction defects, these issues can do more than stain your walls — they can lead to structural deterioration, indoor air quality problems, and health risks for occupants.
Whether you're a homeowner dealing with recurring mould, a landlord or strata manager fielding tenant complaints, or a builder or insurer investigating defects, Confluence Environmental helps you identify the root cause and resolve it the right way — not just treat the symptoms.
Our Services – Comprehensive Mould & Moisture Assessments
We provide independent mould and indoor air quality consulting across Greater Sydney and the Blue Mountains, helping clients make informed decisions, meet compliance obligations, and return buildings to safe, healthy condition.
1. Moisture & Mould Investigations – Sydney & Blue Mountains
Our investigations begin with a detailed site inspection, combining visual assessment with tools such as:
Thermal imaging
Moisture meters
Hygrometers
We assess building performance factors including:
Ventilation and HVAC design
Waterproofing and drainage defects
Occupant practices affecting condensation
Building materials prone to damp retention
Our goal is to trace the issue to its source and prevent recurrence — not just report visible damage.
2. Mould Testing & Air Sampling
Where required, we conduct surface, bulk, and airborne spore sampling to determine:
Types of mould present (e.g. Cladosporium, Aspergillus, Stachybotrys)
Indoor spore concentrations
Potential health impacts
All samples are analysed by NATA-accredited laboratories, and results are interpreted in line with Australian industry guidelines. We’ll explain what was found, whether remediation is needed, and how urgently action should be taken.
3. Remediation Scope, Oversight & Clearance
If mould remediation is required, we can develop a clear, independent scope of works including:
Safe work procedures and PPE requirements
Containment and air filtration measures
Clearance criteria and validation process
Recommended contractor qualifications
We also offer remediation oversight and post-remediation verification (PRV) — including clearance inspections and optional follow-up air testing to confirm that the area is safe to reoccupy.
Common Mould & Moisture Issues in Sydney and the Blue Mountains
We regularly investigate:
Mould in older Sydney homes with rising damp, subfloor moisture, or roof leaks
Damp problems in newly built homes shortly after handover
Moisture damage following storms, flooding, or plumbing failures
Tenant complaints and rental disputes involving air quality
Insurance claims involving water damage and mould
Strata ventilation issues in shared services or basements
Musty odours and unexplained illness in office or commercial spaces
If a space feels damp, smells musty, or is making people unwell — it’s time to act.
Why Choose Confluence Environmental?
We are independent consultants — not mould cleaners or product sellers.
Our reports are objective, science-based, and free from sales bias.
We bring expertise in occupational hygiene, WHS, and building health.
Our advice is practical, defensible, and suited for use by insurers, builders, regulators, and legal teams.
We understand mould as part of the bigger picture of building safety, liability, and compliance.
Servicing Sydney and the Blue Mountains Region
We provide expert mould and air quality assessments throughout:
Sydney Metro (Eastern Suburbs, Inner West, Western Sydney, Northern Beaches)
The Blue Mountains (Katoomba, Leura, Springwood, Blackheath, Lawson)
Penrith, Hawkesbury, and surrounds
Surrounding regional and semi-rural areas
Book a Mould Assessment Today
Protect your health, your home, and your peace of mind.
Call 0493 042 642 or book online to request an inspection or quote. We’ll help you get to the root of the problem — and back to a safe, dry, and healthy environment.
Frequently Asked Questions (FAQ) – Mould, Moisture & Microbial Consulting
Q: How do I know if mould in my building is a health risk?
Mould affects people differently, but exposure can lead to respiratory issues, asthma flare-ups, fatigue, eye or skin irritation, and worsened allergies — especially for children, the elderly, or anyone with a compromised immune system. Even if the mould is not visible, a musty smell, water stains, or damp areas may indicate microbial growth. We assess both the visible impact and airborne spore levels to determine whether health risks are likely.
Q: What causes mould to form in new buildings?
Mould in new builds is usually caused by construction moisture — such as trapped water from poor drying during the build, inadequate ventilation, wet plasterboard, or leaking windows and flashings. If not addressed early, mould can grow inside wall cavities, ceilings, or under floors. We investigate moisture intrusion at the building envelope level and provide recommendations to fix root causes, not just symptoms.
Q: Can you tell me if mould remediation was done properly?
Yes. We provide post-remediation verification (PRV) services, which involve a detailed inspection of the treated areas, moisture testing, and (where required) air or surface sampling to confirm that mould has been successfully removed and no longer poses a health risk. We can issue a clearance report that satisfies landlords, insurers, or regulatory authorities.
Q: Do you provide mould cleaning or removal services?
No — and that’s a good thing. We are independent consultants, not contractors or product sellers. That means you can trust us to give unbiased advice about what needs to be done and whether remediation is even required. If it is, we can refer you to experienced professionals and oversee the work to ensure it’s done correctly.
Q: Do I need to test the air for mould?
Air testing can help assess hidden mould contamination or airborne spore levels, especially in buildings with health complaints or poor ventilation. However, testing isn’t always necessary. We only recommend laboratory analysis when it adds value — and we always explain the purpose, cost, and benefit before collecting samples.
Q: What areas do you service?
We work across Sydney, the Central Coast, Newcastle, Lake Macquarie, the Hunter Valley, and regional NSW. We regularly assist property managers, homeowners, insurers, builders, and government agencies in both metro and rural areas. For large projects or urgent assessments, we can often attend site within 24–48 hours.