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EXTERNAL ENVELOPE
Senior Architectural Systems publishes EPD for its SF52 aluminium curtain wall system
S
enior Architectural Systems, a leading UK supplier of aluminium fenestration solutions,
has published a new
independently verifi ed and product specifi c Environmental Product Declaration (EPD) which delivers a new level of transparency for its SF52 aluminium curtain wall system. Developed
in accordance
with EN
15804+A2 and independently verifi ed to ISO 14025:2011, the new EPD provides transparent, third-party assessed data on the environmental performance of the SF52 curtain wall system. This includes key metrics such as global warming potential (GWP), energy consumption, and water usage across the product’s full life cycle.
market,
Unlike many comparable EPDs in the which typically report carbon
fi gures for 1 kg of aluminium billet and often exclude the environmental impacts of profi le extrusion and non-aluminium components, Senior’s latest publication sets a new standard. The SF52 EPD offers fully project- relevant data by detailing the environmental impact of all system components, including thermal breaks, gaskets, and fi xings, as well as fabrication and delivery to site via Senior’s fabricator network.
The energy-intensive
extrusion process is also accounted for, providing a truly comprehensive overview. Senior’s new EPD has also been developed in line with the latest BS EN 18001:2024+A2 Product Category Rules for curtain walling, using the recommended reference sizes for the system. Importantly, the glazing has been excluded, as it is not normally supplied by system houses. If glazing is included, it can distort results when divided down to 1 m²
declared unit. The heavy weight of glass, combined with its relatively low carbon per kg, makes the overall fi gures for the aluminium system look lower than they really are after conversion. That’s why for complete accuracy, glazing should always be reported separately through its own EPD. By taking this approach, we believe our SF52 EPD gives a true and transparent fi gure per m² of aluminium system. This more holistic approach not only aligns with rising industry expectations around transparency and project-specifi c carbon reporting, but also underlines Senior’s proactive strategy to support informed specifi cation. The SF52 EPD is also unique in that it includes non- linear scaling, with three system sizes verifi ed and consolidated into a single publication. This enables specifi ers to accurately calculate and scale the environmental impact of any SF52 mullion-drained system confi guration. Senior and its verifi er, EPD Hub, believe this level of detail is currently unmatched within the sector.
By making this data available, Senior is supporting the whole construction supply chain, from architects and main contractors to specialist fabricators and installers, in making more informed
sourced aluminium, offers excellent thermal performance and high levels of recyclability. The publication of its EPD reinforces the product’s
suitability for a wide range of
low-carbon construction projects, including new builds and refurbishments across the commercial, public sectors.
education, residential, and
Senior is also in the process of developing further EPDs for its aluminium system portfolio, including the patented PURe® range, underlining the company’s ongoing commitment to sustainable specifi cation and transparent reporting. Luke Osborne,
Senior Architectural
Systems’ UK sustainability lead, said: “We know how important reliable environmental data has become for everyone involved in the construction process, from design and procurement, right through to delivery and installation.
The Environmental Product
Declaration document for our SF52 curtain wall system gives our customers across the supply chain the information they need to meet their own sustainability targets and regulatory requirements. It’s also part of our wider commitment to raising standards and
driving continuous decisions when
specifying aluminium curtain wall systems. The published EPD, which is available on request or via Senior’s NBS Source profi le, also supports compliance with increasingly stringent building regulations and sustainability frameworks such as BREEAM and Passivhaus projects. Senior’s SF52 curtain wall system, which is manufactured in the UK using responsibly
environmental performance.”
Download the SF52 EPD via Senior’s NBS Source profi le or request a copy from UK sustainability lead Luke Osborne at
lukeo@sasmail.co.uk For more information,
please email
enquiries@sasmail.co.uk 01709 772600
enquiries@sasmail.co.uk
improvement in
WWW.ARCHITECTSDATAFILE.CO.UK
ADF OCTOBER 2025
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