The Project
Project Details
The 14-level hospital at Westmead serves as the centrepiece of the New South Wales Government’s $1 billion-plus Westmead Redevelopment. Designed by HDR Rice Daubney, this comprehensive healthcare facility features two new emergency departments – one for adults and one for children with dedicated entry points, 20 new operating and interventional suites with highly specialised technology and equipment, a new Cardiac Comprehensive Care Centre, over 300 new patient rooms, and extensive education, training and research areas and facilities. The scale and complexity of this landmark healthcare project demanded waterproofing solutions capable of meeting stringent hospital standards across diverse applications.
To meet the highest performance and sustainability standards, the project focused on:
- Delivering reliable below-grade waterproofing protection for lift pits and basement structures supporting critical healthcare infrastructure
- Providing vapour-permeable membrane systems with excellent freeze-thaw durability suited to long-term healthcare facility requirements
- Ensuring high-quality, flexible waterproofing with outstanding adhesion properties for concrete, masonry and natural stone substrates throughout the complex
Envirosystems Solution
Envirosystems Hydrostatic 1 solution was installed during the early works stage to the lift pits at Westmead Hospital. Based on advanced cross-linking polymer technology, Enviro Hydrostatic 1 is a single-component flexible polymer-modified cementitious membrane. The addition of water to the Hydrostatic 1 powder forms a high-quality liquid membrane system designed for application over concrete, masonry and natural stone substrates.
The cured film provides a watertight membrane that remains permeable to vapour diffusion, offering excellent freeze-thaw durability and outstanding adhesion properties essential for below-grade applications. This system proved ideally suited to the demanding requirements of the Westmead Hospital Redevelopment, providing reliable waterproofing protection for critical infrastructure supporting the 14-level healthcare facility and its specialised medical services.
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