Tolworth Hospital – Façade Design & Consultancy – New Build Project
Patrick Ryan Associates are the façade consultants for RIBA stages 3, 4 & 5 for the Tolworth Adult Mental Health Hospital redevelopment project.
We have been assisting our clients, Sir Robert McAlpine, and the architects Ryder Architecture in developing the façade design and advising on the proposed façade systems with particular focus on the modular construction.
PRA provided the technical design detail, outline specification as well as thermal calculations during RIBA stages 3 and 4 and have been on hand to provide advice around the application of the façade design including design and glass risk assessments.
At stage 5, we moved into reviewing commenting and providing the status of the façade contractors’ drawings, structural, thermal, and acoustic calculations, samples, and technical submissions.
Our site visit in August 2026 saw fantastic progress on the Tala Building. As part of a £110m transformation, this new therapeutic facility will provide 90 beds across 5 wards as well as staff training facilities, a public restaurant and cafe.
The façade plays an important role in creating an environment that balances patient health, wellbeing and recovery with the demanding safety and security requirements of an Adult Medium Secure facility.
This design brings together robust security, anti-climb and increased safety detailing with specialist solutions for patient-accessible areas, including Annex B tested windows and curtain walling.
Just as importantly, every ward has access to outside space. Courtyards and sky gardens provide fresh air and natural light, while ETFE roofs create protected, light-filled spaces. A calm, muted façade palette helps bring everything together, creating a more personal, secure environment.
It’s great to see the technical detail, collaboration and design coming together and we look forward to its opening in early 2027.
Developer: NHS South West London and St George’s Mental Health NHS Trust
Architect: Ryder Architecture
Client: Sir Robert McAlpine
Façade Consultancy: Patrick Ryan Associates
