We tend to focus on recycling conventional plastic waste, but there are growing initiatives to look at the longer life cycle of durables and while this has mostly been focused on the automotive space, it is interesting to see the building industry looking at building life cycles. Many of the alternative use mechanical recycling initiatives are directed toward substituting building products such as concrete and wood and while this will help the construction sustainability story, the end of life cycle issue is less clear. The majority of commercial real-estate emissions are associated with operations (around 70%) and this is the greater focus for owners today, but the life cycle question is increasingly important for building tenants. In the UK for example there are redevelopment projects proactively advertising how much of the original building will be retained – i.e. not demolished and landfilled. Ultimately this might lead to lower demand for commercial building products where developers are looking at existing buildings, but it will not impact new greenfield builds unless you get a steep increase in recycled polymer use. The offset would likely be concrete as this is the high carbon footprint material that most are targeting. See more in today's ESG and Climate Report.
The McKinsey analysis is likely spot-on, as it is very difficult to get enough recycled polymer to produce a mechanically recycled stream that can be used in the highest value same use market. Solving for this is complicated by many factors, with too many stakeholders in many of the chains to make it work:
Companies are being encouraged/forced to produce climate plans by ever more focused shareholders many of whom only have a passing understanding of how some of the companies operate and how they might best set a course to lower emissions and otherwise be better stewards of the environment. The pretty graphic by Covestro below likely looks much better than the data and ambition behind it really are. This is not necessarily meant as a criticism of Covestro, but the company like many others is being challenged to explain a very complex, process, and engineering-heavy set of options to an audience not really qualified to understand them – pictures with circles are easier.