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EXTERNAL ENVELOPE
True assurance depends not only on how products are tested, but also on how the results are interpreted and the extent to which those results can legitimately be applied
• EN 13238 (conditioning procedures) • CEN/TS 15117 and other sector- specifi c technical specifi cations.
The process typically follows one of several recognised methods: 1. Direct reference to product technical specifi cations where extension rules are already defi ned
2. Relationship-based assessment, demonstrating how performance varies with defi ned parameters
3. Experimental or empirical programmes, using additional test evidence to map performance changes
4. Recognised calculation methods where validated models are available.
The objective is to ensure that any extension remains technically justifi ed and consistent with established European testing methodology.
Navigating the pathway from test to classifi cation The fi nal classifi cation report records not only the fi re resistance performance, but also the permitted fi eld of application derived through DIAP and EXAP.
Avoiding misinformation While BS EN 1364 and BS 476 are fundamentally different test standards, there is currently insuffi cient publicly available evidence to support broad conclusions regarding how products previously tested to BS 476 will perform when assessed using harmonised European test methods. The transition should therefore be approached on the basis of evidence rather than assumption. It would be inappropriate to suggest that products achieving a particular level of performance under BS 476 will automatically achieve an equivalent classifi cation under BS EN 1364 without supporting test data. Equally, claims that such performance cannot be achieved should also be supported by robust evidence.
The most reliable approach is producing representative test evidence to demonstrate performance, testing and classifi cation exist to provide objective proof of performance. Discussions surrounding the transition should be informed by data and technical evidence rather than speculation.
Adam Boumnaia is general manager at Attain RTC
Brett Martin restore the light at Swansea Stadium 20 years on
The refurbishment of the roof on the east stand of Swansea Stadium, which saw the like-for-like replacement of the original Brett Martin Marlon CS polycarbonate sheets, not only addressed weather damage but also restored the light transmission of the roof, improving the spectator experience. The roof was replaced in 7 weeks with zero disruption to match days. Opened in 2005, Swansea Stadium, home to Swansea City AFC, features Marlon CS corrugated polycarbonate sheet on the roof of the stadium to bring daylight into the stands while protecting spectators from the elements. Marlon CS was ideal as it is 200 times stronger than glass and provides almost 90% light transmission. In 2025, Swansea City AFC contacted Brett Martin and specialist commercial roofi ng and cladding contractor Central Group for support in addressing storm damage to the roof, which had led to water ingress. Paul Priestley, regional business manager at Brett Martin, said: “Swansea Stadium shows the quality and longevity of our Marlon CS panels. They stood the test of time for more than two decades.”
024 7660 2022
www.brettmartin.com Hollowcore fl ooring system at care facility
FP McCann has successfully supplied and installed its prestressed precast hollowcore fl ooring system for a new care facility currently under construction in Milton Keynes, further demonstrating the benefi ts of off-site manufactured structural solutions within the healthcare and residential sectors. The prestressed hollowcore units were delivered to site and installed by the company’s
experienced fi xing team. A total of 771 m2 of fl ooring was installed over a three-day period, highlighting the speed and effi ciency that precast systems can bring to large-scale construction projects.
sales@fpmccann.co.uk www.fpmccann.co.uk Convenient and paper-free
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ADF JULY/AUGUST 2026
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