4


NEWS


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he consultation to the 2025 Future Homes Standard was issued in December last year, to cries of ‘missed opportunity’ from many in the industry, due to undershooting on the energy effi ciency targets versus what many had been hoping for. For example, the U-values in the two ‘notional dwellings’ that will be used to measure buildings’ energy use in the standard for English new build homes are based on the same fabric standards as Part L 2021, air permeability is modest, and there’s scarce mention of embodied carbon or thermal bridging. UKGBC says the consultation posits “a choice between the two weakest options,” and believes that a “further standard” will have to be introduced in short order after the 2025 FHS, meaning more costs in store for developers. However on the other end of the spectrum, some reckon the FHS stores up problems as currently formulated, such as its new Home Energy Model (replacing SAP) drastically underestimating energy use of homes.


As reported in the news this issue, I recently met waste water heat recovery specialists Showersave (now part of Keystone Group), and they think the modelling of hot water demand within an average home is faulty. They say it’s based on dubious or at least outdated data from combi boilers, which did not specify the nature of heat being used, and the consultation must tackle this as it (hopefully) approaches its conclusion. The Chartered Institute of Environmental Health, agrees that current HEM hot water estimates are “misleading,” being based on occupancy of a fi ve-bed property set at 3.9 people, whereas in PRS projects, for example, this is a minimum of fi ve people. Unaddressed, the risk of drastically undersizing, or underspecifying, hot water provision for many homes, could result in many thousands of snagging issues which will further frustrate Labour’s 1.5 million homes ambition.


There is a long way to go until the Future Homes Standard is ironed out, and somehow it is supposed to come into force as legislation in 2025. It seems to be ‘too little change’ on one hand, and ‘too many fi ngers in the air’ on the other. It’s a massive opportunity to improve our carbon performance from construction, but hugely diffi cult to get right in a way that works for everyone. The question is how much has the new Ministry of Housing, Communities and Local Government listened to the consultation responses and taken their recommendations on board. And, will the accompanying guidance be be prescriptive, or woolly? We will be keeping a close eye on the prognosis for the standard, in the meantime, please enjoy this issue.


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We’re delighted to welcome Stephen Cousins back to the fold, who’s put together a great report on the second phase of the Park Hill retrofi t scheme in Sheffi eld. And, our Industry Viewfi nder short-form white paper on our recent survey homes in on the changing world of product certifi cation with some revealing fi ndings.


James Parker, Editor


FROM THE EDITOR


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PARK HILL PHASE TWO, SHEFFIELD Stephen Cousins reports on Mikhail Riches’ Stirling Prize-nominated, super-sustainable retrofi t of a notorious estate which targets embodied carbon


ADF09_2024 Covers.indd 1 12/09/2024 13:25


09.24


ON THE COVER...


Park Hill in Sheffi eld, an embodiment of carbon saving refurbishment by Mikhail Riches architects.


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For the full report on this project, go to page 34


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ADF SEPTEMBER 2024


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