About Us
Darren Tava Williams, boasting 25 years' expertise, established Waterproofing Assurance. His vast NSW and ACT connections and membrane technology insight, reinforced by his qualifications, form the backbone. A dedicated team of specialists drives the firm's commitment to unparalleled industry standards.
Administration

Darren Tava Williams
Director

Maha Subhangan
Accounts Administration Manager
TESTING TEAM

Gerard Margi
Field Operations Manager

Phillip Stanislas
Remedial and Compliance Manager

Dylan Saeed
QA Field Technician
DESIGN TEAM

Kaylah Ryan
Design Manager

Lijia Wang
Senior Design Coordinator

Tayla Cornelio
Senior Design Coordinator

Harry Chandramohan
Senior Design Coordinator

Lachin Soufiani
Design Coordinator

Susan Hillsley
Design Coordinator

Sara Poursharifi
Design Coordinator
Business Procurement and Estimating

Brad Williams
Business Procurement and Basement Specialist

Manan Patel
Estimator
WHAT WE DO DIFFERENTLY
At Waterproofing Assurance, our distinct quality assurance service in waterproofing is unmatched. Our method integrates design phase consultancy with rigorous application phase quality control, effectively preventing common defects and costly future repairs. We utilise
specialised testing methods to evaluate waterproofing membrane
parameters meticulously. This ensures the waterproofing quality on your project aligns with NCC, Australian Standards, and industry best practices.
Why Choose Us?
We safeguard your project’s success with our commitment to excellence
and precision, delivering reliable, compliant, high-quality waterproofing solutions.