We must move forward from simply compliance to confidence in performance. This will build trust in the buildings and the homes in the future. - Richard Glover
Richard Glover
Later on Day Two on the Fire Safety Leaders’ Summit stage, the FPA’s Director of Testing and Inspection Services, Richard Glover, led a session centred on the complex and evolving fire safety challenges associated with Modern Methods of Construction (MMC). He was joined by Agnieszka Melling-Sawicka, Associate Director at PartB and Simon Ince, Programme Manager at UL Solutions.
Glover noted that as the industry shifts from traditional, on-site, labour-intensive building techniques to more innovative, factory-based approaches such as volumetric, panelised, and hybrid systems, it represents “not just a construction shift, it’s a shift on how fire safety risk needs to be understood and managed.”
The panellists all agreed that while MMC offers benefits like improved quality, consistency, and productivity, it also introduces new materials, interfaces, and construction sequences that complicate fire safety assessment.
A major theme was the persistent gap between design intent and execution. Even when products are correctly specified and tested at the design stage, changes and unforeseen conditions during construction can undermine fire safety. Melling-Sawicka noted problems found on site, including “incorrectly installed fire stopping, compromised compartmentation, hidden voids and fire spread paths, and unclear structural fire behaviour”.
Melling-Sawicka gave an example case where glazing systems, though properly specified and tested, failed to account for differences in site conditions, leading to late-stage modifications and increased costs. The panel agreed that this example underscores the need for better communication and collaboration among designers, manufacturers, and contractors from the earliest project stages.
The limitations of traditional product-level fire testing were also discussed. While individual components may have strong evidence of fire performance, their behaviour as part of a complete system can differ significantly. Glover noted that the critical areas for fire safety in MMC builds are around the “interfaces, penetrations and junctions, installation and sequencing, and is not typically around individual products.”
The panellists then went on to share further real-world examples where systems composed of individually tested components failed at the interfaces or junctions when tested as a whole, revealing weaknesses not apparent in isolated product tests. These examples highlight the necessity for system-level testing and assessment to ensure actual fire performance matches expectations, with Ince explaining that this is often the result of “innovation without the checks and balances of third-party certification.”
The group then went on to discuss the regulatory response to these challenges, particularly the introduction of the PAS 8700 framework. This aims to clarify roles and responsibilities throughout the MMC process and encourages early, evidence-based design and testing, with an emphasis on the importance of digital records, traceability, and third-party certification. All three speakers saw the framework as a positive step, providing a structured, quality-assurance-based approach that assigns clear accountability to principal designers, MMC consultants, and contractors. Ince described the PAS as a “quality assurance document”, and explained that this should drive more rigorous due diligence and encourage the use of system-level evidence rather than relying solely on component certification. He explained that “if I was put my name to something, I’d make sure I had evidence that supported the design theory and performance theory about it, because that way I’m protected.”
The panel also agreed that while PAS 8700 and similar initiatives are voluntary, their adoption is likely to become a de facto standard for best practice, especially as the industry and regulators increasingly demand robust, system-based fire safety evidence.
In summing up, Glover explained that “we must shift our thinking from simply products and components to the more holistic system thinking”. The discussion concluded with a call for a shift from compliance-focused thinking to a performance-based approach, where confidence in MMC fire safety is built on empirical evidence and holistic system assessment. Ongoing collaboration, early engagement, and a willingness to challenge assumptions were identified as key to improving fire safety outcomes in the rapidly evolving MMC landscape, with Glover concluding: “We must move forward from simply compliance to confidence in performance. This will build trust in the buildings and the homes in the future.”
From left to right: Simon Ince, Agnieszka Melling-Sawicka, and Richard Glover