Ellen Huelin, Head of Sustainability at Whitecode, investigates the proposed Part Z amendment to the Building Regulations and the importance of embodied carbon regulations.
There has been a great deal of focus trained on the energy efficiency of properties being built and operational emissions, but not enough attention has been paid to the sustainable aspect of the construction process. The Environmental Audit Committee report published in May 2022) 'Building to net Zero: costing carbon in construction' states that the single most significant policy the government could introduce is a mandatory requirement to undertake a wholelife carbon assessment for buildings and that this requirement should be set within building regulations and the planning system. It says the government should then develop progressively ratcheting carbon targets for buildings, with a clear timeline for introducing this in place by the end of 2022.
This is the biggest indication yet that the government is beginning to listen to our industry which has been actively supporting the concept behind a new Part Z and recognising that, as a result of a lack of policy, no real progress has been made in reducing embodied carbon emissions within the built environment.
Policy change will be the quickest route to transform the industry so that we can match countries including the Netherlands, France and Sweden who already regulate embodied carbon emissions. It is frustrating that we are lagging behind others when we have an industry that is calling for it. Any new policy needs to be progressive otherwise the industry will not achieve substantive change. The government's Future Homes and Buildings Standard will ensure that all future homes will be net zero ready from 2025, if new regulations around embodied carbon emissions don't come into lay soon, this will be a standard that will be difficult to meet.
We also need regulation and quickly, around the use of sustainable construction materials to ensure that as an industry we are working towards net zero. To do this I believe the government needs to incentivise their use and their development. We need to consider the circular economy. We know that we shouldn't be putting things into landfill and that we should be looking to recycle where possible, but we don't want to just be able to recycle – we need to be able to re-use construction materials again and again. We need to look at how functional and adaptable they are and ensure they are designed for assembly so they can be remodelled and repurposed. We can no longer just stick materials together if we want to work towards a whole life-cycle approach.
Industry standardisation will support moves to regulate embodied carbon. Notes on the proposed Part Z say that a cross-industry team is developing a free-to-use Built Environment Carbon Database (BECD) that will be launched this year, the idea being that it minimises the cost and complexity of the process of measuring embodied carbon. The BECD will also include a product database. The standardisation and bringing together of information is vital to allow new regulations to be easily implemented. The government needs to adopt this approach by standardising methodology, creating reporting frameworks and setting minimum targets for the construction sector.
Industry support for regulation is clear, with major developers and industry bodies stepping forward to support the concept of Part Z. I am also seeing a change of mindset coming from within the sector around environmental, social and corporate governance (ESG). These are positive developments that demonstrate a real appetite by companies to accelerate their reduction in carbon emissions. The government needs to recognise that the construction industry is ready and willing for change. The time is now.
For more information visit: www.whitecode.co.uk
Read the full article, go to Offsite Magazine
