Planetary Boundaries Framework
From Planetary Boundaries to Building Materials: Where a:gain Makes a Difference
Credit: Azote for Stockholm Resilience Centre, based on analysis in Sakschewski and Caesar et al. 2025
The Planetary Boundaries framework shows us the limits of Earth’s life-support systems. It highlights where human activity is pushing natural systems beyond their safe operating space, and where urgent action is needed. Out of nine boundaries, seven are already crossed, including climate change, biosphere integrity (biodiversity), land-use change, and biogeochemical flows [1]. Construction and building materials are deeply entangled with these pressures: from the energy-intensive production of cement, steel, and glass to deforestation, resource extraction, and the generation of waste. At a:gain, our work directly addresses three of the most critical boundaries.
Planetary Boundary: Climate Change
a:gain contribution
Lowering CO2e emissions
The production of conventional building materials is one of the biggest drivers of climate change, accounting for 35% of EU´s total waste generation, 50% of extracted materials consumption and 32% of CO₂e emission [1] [2] [3]. Manufacturing of cement alone accounts for around 8% of global CO₂ emissions, while manufacturing of steel, glass, and plastics add millions of tonnes more. A major part of this footprint comes from the extraction and treatment of raw materials, before they even enter the factory.
Our approach breaks this cycle. By starting with what is already seen as “waste”, off-cuts, demolition streams, post-consumer materials - we remove the need for extraction and reduce the energy intensity of production. Through industrial manufacturing, we create products from secondary resources and discarded materials, which obtain the same performance and comes with the same guarantees as products made from virgin resources, but with a much lower CO₂e footprint. Every square meter of Bronsø cladding and every panel of Tystø partitions represents avoided emissions compared to “business as usual.” In climate terms, this is where we shift the dial: We avoid new emissions while unlocking the value of materials that would otherwise be lost.
Planetary Boundary: Land-System Change
a:gain contribution
Reducing the use of virgin resources
The processing of virgin materials not only generate CO₂e - their extraction also reshapes landscapes and ecosystems. Mining sand for glass, cutting forests for timber, or quarrying limestone for cement all drive land-use change, water stress, and pollution.
By replacing virgin materials with secondary ones, we relieve pressure on these boundaries. Reusing glass avoids new sand mining. Repurposing sorted out wood to flooring products avoids cutting forest for timber. Upcycling PET bottles into Dybø acoustic batts keep plastics out of ecosystems and reduces demand for oil-based feedstock. With every project, we demonstrate that high-quality construction does not require an endless appetite for virgin extraction. We prove that resource loops can be closed without compromising quality, safety, or design.
Planetary Boundary: Biosphere Integrity
a:gain contribution
Protecting off-site biodiversity
Biosphere integrity is one of the core planetary boundaries, meaning it underpins the functioning of several of the others. The biggest threats come from land-use change: clearing forests, draining wetlands, or digging mines. While construction often drives this indirectly through demand for raw materials, our model shifts the equation.
By insisting on secondary resources, we avoid “digging new holes” literally and metaphorically. No new quarries, no expanded sand pits, no fresh scars on landscapes that are home to ecosystems and species already under stress. Protecting biodiversity doesn’t just mean saving rainforests; it also means respecting the local ecosystems around extraction sites. With every tonne of material we repurpose, we remove pressure from these fragile systems.
Our contribution
Our mission is to develop high-quality circular building products
The Planetary Boundaries framework makes one thing clear. We cannot solve climate change in isolation. We must reduce CO₂e, yes, but also protect biodiversity, keep ecosystems intact, and curb our appetite for virgin resources.
This is exactly where a:gain makes a difference. By turning secondary resources into high-quality building products, we contribute to staying within multiple boundaries at once:
- Lower CO₂e (climate boundary),
- Fewer virgin resources (land-system change and nutrient cycle boundaries),
- Protected biodiversity (biosphere integrity boundary).
In short, our mission is to develop high-quality circular building products, and in doing so, contribute to a safer, more sustainable built environment for future generations. We also know that we are not perfect. No building product is footprint-free, and a:gain cannot solve these planetary challenges alone. But we can contribute by extending the value of existing materials – thereby reducing the extraction of virgin materials. We do not claim to be the solution, but we are committed to being part of it.
Learn more about sustainability at a:gain
