Indoor Particulate Investigation

Investigation Triggers

Particulate investigations are typically commissioned when routine monitoring shows elevated PM2.5 or PM10, when occupants report dust deposits or respiratory symptoms, when HVAC filters show unusual loading, or when external events (construction, roadworks) may be affecting indoor air.

• Elevated particulate readings from monitoring systems
• Occupant complaints about dust, stuffiness, or respiratory symptoms
• Unusual HVAC filter loading or discolouration
• Visible dust deposits on surfaces despite regular cleaning
• Nearby construction or demolition activity

Investigation Methodology

We deploy multi-point monitoring to map particulate distribution across the building, combined with HVAC inspection, filter analysis, external monitoring, and building envelope assessment. This systematic approach identifies whether particulates originate internally, externally, or from the HVAC system itself.

Outcomes

Investigation reports provide clear source attribution, quantified particulate levels against relevant standards, and prioritised remediation recommendations. We can verify remediation effectiveness through follow-up monitoring.