Excess Materials Exchange - The Alliance for Sustainable Building Products

A site audit identified that the granite façade from a large-scale Dublin project would be saved due to its high value, quality, and ease of reuse and storage. Details of the salvaged granite were uploaded to the CMEx platform to facilitate reuse.
The EME team evaluated the environmental impact of 500 square metres of hand-selected Italian granite (40mm thickness, 2 tonnes total weight). The carbon footprint was calculated at 107 kg CO2eq/tonne (cradle-to-site for UK destinations).
Reusing the granite avoids total carbon emissions of 214 kg CO2-eq compared to producing new materials, demonstrating a substantial environmental advantage. Additionally, the reused granite materials were more cost-effective than purchasing new ones.
This case shows the importance of integrating environmental evaluation into material reuse, offering valuable insights into sustainability and resource efficiency.

Company Name	Company Name Excess Materials Exchange Bv
Website	https://www.excessmaterialsexchange.com/
Year established	2017
Geographical coverage	Europe, Middle East, Australia, US
Product / service range	Platform for reuse of materials
Features & Benefits (of key products / services)	The Excess Materials Exchange is an online platform for the reuse of construction materials at their highest value.
Types of clients/ target clients	Developers End users Clients Asset managers Contractors Demolition contractors Consultants Designers

Client	Enfield Council
Project	Meridan Water is Enfield Council’s lead regeneration project creating 10,000 Homes.
Project summary and key facts	EME were employed (through Net Positive Solutions) to help facilitate reuse of existing materials on the Meridian Water project between existing assets and infrastructure, and the meanwhile and new developments in the pipeline.
Summary of reuse and resource efficiency	The team conducted Pre-demolition audits, advised the client of BAU vs Best Practice circularity outcomes, prepared business cases, initiated circular procurement decisions, and liaised with stakeholders to increase circularity across Meridian Water projects. A number of initiatives were implemented as part of the project team’s engagement, for example: Deconstruction and salvage of F Block materials for reuse (a mid-20^th century concrete frame building with brick cladding). Over 1000T of concrete were crushed down to the WRAP Quality Protocol, and certified for resue as either Type 1 or 6F2. This aggregate was then reused on enabling works and highways projects. 18,000 bricks (bound in cement mortar) were also salvaged and are available for reuse on future projects. The Drumsheds – these are iconic large industrial warehouses, originally brought down from Scotland around 1960’s. They have been used for storage and distribution and more recently as a concert venue. The project team identified atleast 4 cases for onward reuse, with savings estimated at approx. 460 T CO2.

Client	Irish Green Building Council (IGBC)
Project	Pilot project with 5 IGBC stakeholders
Project summary and key facts	EME deployed the CMEx (Construction Materials Exchange) Platform for the IGBC and piloted this with 5 stakeholders in 2022-2023.
Summary of reuse and resource efficiency	A site audit identified that the granite façade from a large-scale Dublin project would be saved due to its high value, quality, and ease of reuse and storage. Details of the salvaged granite were uploaded to the CMEx platform to facilitate reuse. The EME team evaluated the environmental impact of 500 square metres of hand-selected Italian granite (40mm thickness, 2 tonnes total weight). The carbon footprint was calculated at 107 kg CO2eq/tonne (cradle-to-site for UK destinations). Reusing the granite avoids total carbon emissions of 214 kg CO2-eq compared to producing new materials, demonstrating a substantial environmental advantage. Additionally, the reused granite materials were more cost-effective than purchasing new ones. This case shows the importance of integrating environmental evaluation into material reuse, offering valuable insights into sustainability and resource efficiency.

Client	3XN/ GXN
Project	Matchmaking in the City of London
Project summary and key facts	Architects and consultants 3XN/ GXN approached EME to carry out a Pre-demolition Audits for 2 of their projects in the City of London, followed by setting up a 3XN/ GXN platform to upload digital product passports.
Summary of reuse and resource efficiency	A pre-demolition audit was conducted in 2022 for a building on Mark Lane, with findings discussed in workshops with the design team and client. Some materials were retained for use in the new development and integrated into the Circular Economy Statement. High-value items identified during the strip-out contract were listed on the EME platform for reuse opportunities. An open day was organized with the demolition contractor to promote high-value materials to potential buyers. Various matches were secured, including a manufacturer who agreed to purchase around 10,000m² of metal ceiling tiles for reuse and resale.

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Case Study - Excess Materials Exchange

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