IN Brief:
- FP McCann has validated graphene-enhanced concrete roof tiles through factory-scale trials at Cadeby.
- The preferred formulation indicates a potential 14% reduction in cradle-to-gate embodied carbon.
- Tiles from the trial are being installed on the Cadeby office building for long-term in-situ monitoring.
FP McCann has advanced its graphene-enhanced concrete roof tile project from initial production trials into factory-scale validation, moving the product closer to a commercial route for lower-carbon roofing.
The company has carried out a series of trials at its Cadeby plant in Leicestershire, demonstrating that graphene-enhanced formulations can be integrated into existing high-volume manufacturing processes. The project builds on an initial January run of 2,500 graphene-enhanced tiles, followed by further trials to test performance limits and a March demonstration run that produced 10,000 tiles using an optimised mix.
The Cadeby facility operates three automated production lines with a combined daily output above 120,000 tiles. The scale of the site gives the trials practical value, as any low-carbon formulation must work under normal factory conditions, at normal production speeds, and within existing quality requirements.
FP McCann said the preferred route combines graphene-enhanced cement with further binder substitution, indicating a potential 14% reduction in cradle-to-gate embodied carbon across A1-A3 life-cycle stages. The trials have also shown that the selected mix can run on existing production equipment without new tooling or disruptive changes to mixing, casting, and curing processes.
The programme has involved First Graphene, Breedon, and the National Composites Centre. Breedon produced 600 tonnes of graphene-enhanced cement at Hope Works, with 60 tonnes delivered to Cadeby for trial use. The National Composites Centre supported life-cycle assessment work to quantify environmental impacts across different formulation scenarios.
FP McCann also used in-house digital quality systems during validation. A robotic laser-profile scanning system captured tile geometry in dense 3D point clouds, while an AI-driven vision system assessed every tile produced during the campaign. Selected tiles are now being installed on the new Cadeby office building for long-term in-situ monitoring alongside laboratory assessment.
Roofing products do not always attract the same attention as cement, steel, or structural frames, but concrete roof tiles are produced in high volumes and used widely across housing. Percentage reductions become commercially useful when they can be delivered at scale without slowing production or increasing capital requirements.
Manufacturing compatibility is central to that equation. Many lower-carbon materials struggle to move from laboratory performance to routine production because they require new equipment, longer curing times, different handling, extra quality checks, or changes to established supply chains. A formulation that can be processed on existing lines has a stronger path into specification and procurement.
The development comes as housebuilding remains under cost and viability pressure. IN Site has recently reported on rising build costs, regulatory costs, and planning pressures across residential delivery. Lower-carbon products face a difficult route into mainstream use if they create extra cost, slow supply, or introduce uncertainty into warranties and performance assurance.
Durability and leaching assessments remain part of the next stage. Roof tiles must perform over long service lives, through weather exposure, freeze-thaw cycles, loading, installation tolerances, and maintenance conditions. Carbon reductions will need to stand alongside product assurance, certification, and installer confidence.
The use of digital quality control also reflects a wider change in construction product manufacturing. As regulation, carbon reporting, and traceability requirements increase, manufacturers need stronger evidence trails around performance, batch consistency, and environmental claims. Automated scanning and AI inspection can provide that assurance when new formulations are introduced into established production lines.
FP McCann’s latest trials show a practical industrial route: improve the binder, validate at production scale, maintain output, and monitor performance in real conditions. That combination is likely to determine how quickly lower-carbon construction products move from trial projects into everyday specification.
