Building a new home in Sydney or the Blue Mountains? Don’t let moisture damage or hidden mould become a costly surprise.

At Confluence Environmental, we offer independent moisture and mould assessments during construction, helping builders, homeowners, and developers avoid serious issues before handover. With a focus on science-backed inspections and local expertise, we support projects across all of Greater Sydney and the Blue Mountains.

Why Moisture Checks Are Critical During Construction

Even new homes can face mould issues — especially when construction moves fast or weather delays allow moisture to build up. In Sydney and the Blue Mountains, common risks include:

• Water trapped in frames and cavities during rain

• Moisture rising from reactive clay soils

• Poorly sealed penetrations in roofing or bathrooms

• High humidity or condensation in cooler mountain climates

• Undetected leaks in plumbing or waterproofing

Once internal linings are installed, hidden moisture can trigger toxic mould growth, plasterboard failure, timber rot, and future legal disputes.

Our Moisture and Mould Inspection Services

• Framing stage inspections – before cladding or wrap

• Roof and lock-up stage checks – post-installation

• Pre-handover inspections – before occupancy certification

• Moisture meter testing – timber, plasterboard, subfloor

• Thermal imaging for hidden damp spots

• Visible mould and staining identification

• Optional spore testing and surface sampling

• Comprehensive photographic reports with clear findings

Common Risk Zones Across Sydney and the Blue Mountains

Greater Sydney

• Coastal exposure in Northern Beaches, Eastern Suburbs, Sutherland Shire

• Reactive clay soils in Western Sydney (e.g., Penrith, Blacktown, Campbelltown)

• Urban infill sites with poor drainage or stormwater retention

Blue Mountains Region

• High rainfall and low temperatures increase condensation risk

• Poorly ventilated build sites during winter construction

• Water tracking through sloped lots and cut-and-fill foundations

Our inspectors understand how local soil, weather, and building conditions influence moisture risk — and tailor their assessments accordingly.

Optional Mould Testing Available

Where visible mould is detected or indoor air quality is a concern, we can provide:

• Airborne spore sampling

• Surface tape-lift or swab testing

• Post-remediation verification assessments

All mould testing is sent to NATA-accredited laboratories for analysis.

Who Needs These Inspections?

• Owner-builders wanting assurance before handover

• Homeowners and buyers requesting independent defect checks

• Construction supervisors and certifiers verifying compliance

• Developers seeking quality assurance across builds

• Lawyers or insurance agents handling construction disputes

Areas We Service

We provide new build moisture inspections across:

• All Sydney LGAs – Inner West, Northern Beaches, Hills District, Eastern Suburbs, South West, Western Sydney and more

• Blue Mountains – Katoomba, Leura, Lawson, Springwood, Glenbrook, and surrounding towns

Why Builders and Homeowners Trust Confluence Environmental

• We are independent and unbiased

• We use industry-grade tools for detection and reporting

• We have experience working with certifiers, insurers, and councils

• We know Sydney and the Blue Mountains inside out

• Our reports are clear, photographic, and actionable