09.ED.15 REDUX is the title of the exhibition created by the Australian architecture firm Besley & Spresser for the Lisbon Triennale. It is an intriguing installation made with asbestos waste treated and transformed into safe, carbon-negative building materials. 

In collaboration with materials scientists from Asbeter in Rotterdam and ceramist Benedetta Pompilli in Amsterdam, Besley & Spresser's exhibition redefines this terribly dangerous material from the construction industry, presenting it as a new expression of renewal and repair.

The proposal by Besley & Spresser was selected, along with twenty others from seventy-six countries, to be included among the Triennale's "Independent Projects."

“This project began with a question: what if one of the building industry’s most hazardous materials could become one of its most promising?”
Peter Besley.

“We wanted to take something historically feared and reveal its potential for renewal through innovation, research and design.

The installation makes visible the idea that repair can be both a technical and a poetic act.”
Jessica Spresser.

Proceso de descomposición del amianto. Imágenes cortesía de Asbeter.

09.ED.15 REDUX by Besley & Spresser. Photograph by Rui Cardoso.

Project description by Besley & Spresser

"Unquenchable, Inextinguishable" - From the ancient Greek σβεστος: “asbestos”

“09.ED.15 Redux” shows asbestos, historically a dangerous building material, transformed into harmless, carbon-negative by-products with high architectural potential. The installation shifts the narrative of asbestos from industrial exploitation and suffering to one of repair and innovation. Reflecting the Triennale’s theme, ‘How Heavy is a City’, the exhibition addresses the environmental legacy of asbestos in urban and suburban areas and offers a vision for sustainable urban development via new technologies. The exhibition takes the form of a built installation using these new materials in Lisbon, advocating for a transformative approach in material culture and architecture.

The curiosity, inventiveness and ambition which humanity has relentlessly applied to natural materials underpins the standard narrative of the progress of cities in history. However this “progress” is now everywhere in question, as cities destroy the environments which support them and increasingly harm the lives of their inhabitants. In the case of asbestos, the city’s materials can be fatal.

Asbestos, once a construction “miracle material”, kills hundreds of thousands of people each year and creates millions of tons of contaminated waste landfill worldwide. Yet, what is asbestos? Asbestos is a naturally occurring mineral - a part of the earth. It rests in the ground like other minerals. Asbestos is not “toxic” like human-made poison or radiation. If disturbed and inhaled or ingested, asbestos is harmful to humans. Disturbing asbestos by mining and placing in building products is entirely a catastrophe of our own making. It joins a growing list of exploited natural materials that are now harming us.

09.ED.15 REDUX by Besley & Spresser. Photograph by Rui Cardoso.
09.ED.15 REDUX by Besley & Spresser. Photograph by Rui Cardoso.

However humanity’s curiosity, inventiveness and ambition remains, and can be redirected. It has the potential to be more wisely and less cynically deployed. The historical precedent for the redirection of human focus is long and promising. Around 8% of global carbon emissions are from cement production, yet minerals from broken-down asbestos via an EU certified process by Asbeter can replace up to a quarter of the cement traditionally used in it. The potential impact of this substitution is profound, offering a scalable path toward dramatically lowering the carbon footprint of construction worldwide.

For the city and its materials, the focus should move to within its own boundaries, not outward to ever more compromised wild environments. It should be to the radical repair, reuse and rediscovery of materials the city already has. In the case of asbestos, waste building materials which include the mineral can be recrystallised to form new, safe materials. These new materials have great potential: for the replacement of cement in construction, and use in architectural materials like renders, tiling and glazes. In addition, reuse and adding asbestos to a circular economy has the potential to unlock large landfill sites, returning them to use or as rewilded environments. Ageing buildings constructed with asbestos too, can be safely recycled into non-hazardous materials. The city can begin to return to its earlier idea as a platform for improvement of human life, and its natural spaces and peripheries recover as living ecologies.

More information

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Architects
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Project team
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Asbeter (Rotterdam).
Benedetta Pompili Studio (Amsterdam).

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Research Collaborators
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Thomas Li, Kleopatra Ananda, Jasmine Sharp.

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Collaborators
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Structural Advice.- SDA Structures.

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Client
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Trienal de Arquitectura de Lisboa.

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Dates
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02.10 > 08.12.2025.

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Installer
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Cria Design, Besley & Spresser.

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Venue / Location
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Palácio Sinel de Cordes. Campo de Santa Clara, 144. 1100-474 - Lisbon, Portugal.

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Support
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Brickworks, AC Minerals Group, European Union, Renewi, Just Transition Fund, Provincie Noorde-Brabant, Betonova.

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Photography
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Besley & Spresser is a studio of architects based in Sydney. The practice delivers concept-driven architectural design for a variety of public and private clients. The practice’s approach centres around crafting compelling architecture informed by research, with a particular interest in the exploration of materials.

The work of the practice has been published widely in the architectural and mainstream press.

In 2020, the practice won a national competition for the Barangaroo Pier Pavilion and an international ideas competition for visitor facilities to the historic ruins of Hegra in 2021. In 2022, the practice won a national competition for a major new memorial in Canberra, and in 2024, a City of Sydney Design Excellence competition for new mixed-use housing in Green Square, Sydney.

In parallel with practice, Directors Jessica Spresser and Peter Besley have taught in the Master's program at leading schools of architecture, including the Bartlett in London, UK, the University of Sydney and the University of Queensland.

Besley & Spresser acknowledge the traditional custodians of the land and waters of Australia.

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Published on: November 30, 2025
Cite:
metalocus, ANTONIO GRAS
"Asbestos Reborn. 09.ED.15 REDUX by Besley & Spresser " METALOCUS. Accessed
<https://www.metalocus.es/en/news/asbestos-reborn-09ed15-redux-besley-spresser> ISSN 1139-6415
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