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Sunteck Pinnacle: Alumil India’s Unitised Glazing System
Sunteck Pinnacle in Mumbai showcases Alumil India’s high-performance unitised glazing and curtain wall system. Featuring slender 140 mm mullions, high-performance glazing and advanced sealing, the façade enhances daylight, weather resistance, acoustic comfort and wind-load performance.
As Indian cities grow denser and commercial developments become more complex, façades are expected to deliver far more than visual appeal. They must support structural performance, weather resistance, daylight, acoustic comfort and long-term durability. Sunteck Pinnacle in Mumbai demonstrates how Alumil India combined advanced aluminium façade systems with a high-performance unitised glazing system to meet these demands.
Designed by SSA Architects, Sunteck Pinnacle is a premium mixed-use development integrating retail and office spaces across approximately 2,00,000 sq. ft. Alumil India was involved from the design development stage through execution, helping translate the architectural vision into a technically robust building envelope.Engineering a Unitised Curtain Wall System
The façade solution is centred on a high-performance unitised curtain wall system with exceptionally slender 140 mm mullions. The reduced profile depth creates cleaner sightlines, improves visual transparency and allows more natural daylight to enter the building without compromising structural integrity.
For architects and developers evaluating curtain wall systems in India, this balance is critical. A refined façade must remain structurally dependable while responding to wind pressure, heavy rainfall and long-term environmental exposure. At Sunteck Pinnacle, Alumil’s architectural aluminium systems create a light, elegant appearance while delivering the strength required for a premium commercial development.
Integrating Fire-Safe Opening Windows
A major engineering challenge was the integration of dual-shutter outward-opening side-hung windows within the unitised curtain wall system. The solution was developed to meet fire safety requirements while maintaining the visual consistency of the façade.
Combining operable windows with a unitised façade system requires close coordination across design, engineering, fabrication and execution. Each interface must protect airtightness, watertightness and structural performance. The successful integration demonstrates how advanced aluminium fenestration systems can address complex safety and functional requirements without weakening the architectural intent.
High-Performance Glazing for Mumbai’s Coastal Climate
Mumbai’s coastal environment places demanding requirements on commercial façade systems. Monsoon rainfall, high humidity, strong winds and urban noise can affect both envelope durability and occupant comfort.
To address these conditions, Alumil India’s solution incorporates high-performance glazing, EPDM gaskets and a triple barrier sealing system. Together, these elements improve resistance to water penetration and air leakage while supporting acoustic insulation and high wind-load performance.
The unitised glazing system was engineered to remain visually refined and technically dependable under challenging conditions. This is particularly important for high-rise building façade solutions, where weak detailing or installation can lead to long-term maintenance problems.
Supporting Daylight and Sustainable Performance
The façade was designed to maximise daylight penetration across the interior spaces. Greater access to natural light can reduce dependence on artificial lighting, improve visual comfort and support a better workplace experience.
This approach reflects the growing demand for green building façade solutions and high-performance aluminium systems in India. Sustainable façade design depends not only on materials, but also on how effectively the building envelope manages daylight, air, water and occupant comfort throughout its service life.
A Benchmark for Façade Engineering in India
Sunteck Pinnacle shows the value of involving façade specialists early in the design process. Alumil India’s participation from design development to execution helped align architectural ambition with technical performance.
By combining slim-profile aluminium façade systems, a precision-engineered unitised curtain wall and high-performance glazing, Alumil delivered a façade that is elegant, durable and responsive to Mumbai’s environment. The project stands as a strong example of how specialised façade engineering solutions can support the next generation of commercial architecture in India.
The Architect’s Perspective on Alumil
We are extremely delighted with Alumil as our façade partner. They were involved right from the design and detailing stage through to execution management. A façade is challenging, especially when different metals come together and complement each other. That requires precision and immaculate attention. In the end, as a designer, the delight is a must; as an engineer, the satisfaction is a must. Alumil delivered on both.
says Ar. Sandeep Shikre, Founding Principal & CEO, SSA.
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