Founded in 2019, Deratec Pty Ltd is an Australian engineering consultancy delivering advanced, simulation-based solutions for efficient and compliant building design.

We serve clients across residential, commercial, and industrial sectors, using cutting-edge tools to optimise performance, ensure compliance, and support sustainable outcomes.

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Our specialised services focus on ventilation, energy, acoustics, and façade performance — all aligned with NCC, Section J, and applicable international standards.

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Our Expertise Includes:

• CFD Lab – Virtual Testing of louvres, vents, diffusers, fans, and filters

• Advanced CFD Modelling for airflow, thermal comfort, natural ventilation, smoke, and industrial ventilation

• Building Energy Modelling – Section J, JV3, Green Star, and ESD modelling for energy efficiency 

• Building Facade & Envelope Modelling – Thermal, condensation, and R-value analysis for façades and envlope

• Acoustic Modelling – Louvres, panels, doors, and façade elements

• Mechanical & Ventilation Compliance – NCC-aligned design and performance reporting