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comprise the overwhelming majority of each local authority’s construction footprint. Meanwhile, increasing accountability
around sustainability is facing lenders, investors and contractors, to the extent that material carbon data is now a core risk element of projects.
from the lowest capital cost, towards whole-life value – demanding innovative products which combine the desired performance with transparent, minimisation credentials. This shift is demonstrated through
frameworks such as the UK Net Zero Carbon Buildings Standard, which sets met by those charged with the project Credible data critical key to assuring carbon reduction credentials Of particular importance here is credible data on carbon reduction performance, transcending vague claims around ‘green’ attributes as well as issues with products which may perform well in one area of sustainability but poorly elsewhere – for example, through more frequent maintenance or replacement despite lower initial costs. This is important in products such as
roof tiles, where high-quality products will last 50 years or often much longer, avoiding the carbon cost of early replacement. The required independent assurance
sources. Environmental Attribute of recycled and reused content and proofs of responsible sourcing standards all have a part to play, as does technical data demonstrating the declared service life of the product. These challenges have driven leading
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roof tile manufacturers to deliver without any trade-offs on appearance, durability and ease of installation. Concrete roof tiles already use basic, abundant materials such as clay, sand, and water, while many modern products already use graphene-enhanced cement lower cement clinker content, cutting production emissions. Meanwhile, kilns
can be optimised and powered by renewable energy sources. New production techniques drive progress in carbon reduction However, the carbon reduction credentials of roof tiles are now being further optimised through the use of novel, near-net-zero cement products manufactured through a process harnessing advanced carbon capture The facilities used for manufacturing at source before they can enter the securely stored underneath the seabed. A secure digital system – the Carbon
Bank – records the reductions, with the exact quantity of captured carbon is then “deposited” into the system for each batch of cement manufactured.
reductions can then be allocated with full, documented end-to-end traceability provided through an EAC whose ownership is transferred to the The EAC details the environmental and production credentials of the typically including production and origin data; the type of process or manufacturing technology used; metrics on carbon intensity – the measured greenhouse gas emissions per unit against a standard baseline; and the chain of custody and serial numbers.
If the cement is sourced locally for manufacture, an equal portion of carbon savings is “withdrawn” from the Carbon Bank through a process called mass balancing. Products of this type very much
represent the shape of things to come for local authorities and their partners seeking to navigate the maze of alternatives claiming to be ‘green’, ‘sustainable’ or ‘eco-friendly’. In contrast to these vague and often unsubstantiated claims, roof tiles manufactured using near net zero cement offer fully independent, reduction performance alongside demonstrable performance qualities, providing assurance for all local authority stakeholders and their partners.
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