With the construction sector accounting for a substantial share of global carbon emissions, industry experts and policymakers are emphasising the urgent need to shift toward low-carbon building materials in order to build a more sustainable future.
During a recent conference, architects, engineers and sustainability specialists highlighted that traditional materials such as cement, steel and aluminum contribute considerably to embodied carbon emissions in built environments. According to a United Nations Environment Programme (UNEP) report, solutions addressing “embodied” carbon are falling behind those targeting operational emissions, leaving a critical gap in global decarbonisation efforts.
Experts pointed out several promising alternatives:
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Use of industrial by-products like fly ash, slag and recycled aggregates in place of high – carbon virgin materials.
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Adoption of bio-based materials such as bamboo, reclaimed timber and mycelium panels.
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Low-carbon concrete formulations (for example, blends replacing clinker with calcined clay or limestone) that can reduce CO₂ emissions by up to 30–40% compared to conventional Portland cement.
They stressed that technical innovation alone isn’t enough. Enablers such as regulatory support, capacity building, standardised environmental performance benchmarks and supply-chain maturity are equally important to scale adoption. For example, experts suggested that policy incentives and certification frameworks must recognise materials for lower embodied carbon and broader sustainability attributes.
The message was clear: if the built-environment sector is to meet its net-zero commitments and contribute meaningfully to climate goals, adopting low-carbon building materials is no longer optional—it’s imperative.
