Loft insulation ruling
In the High Court case of May-Lean & Co Limited v The Gas and Electricity Markets Authority [2017], a manufacturer argued that existing loft insulation methods do not meet environmental protection targets. The case focused on the duties of energy suppliers to reduce carbon dioxide emissions and ensure that their customers’ homes are energy efficient.
The manufacturer produced a product used to insulate loft hatch covers. It argued that only such a proprietary product could achieve the level of insulation required to comply with environmental rules and the Building Regulations 2010.
The existing method, involved insulating loft covers with plastic pillows filled with the same insulating material as elsewhere in lofts. The manufacturer argued that this left gaps in insulation cover and, therefore, did not meet legal requirements that the entirety of a loft space must be covered by insulation.
The Gas and Electricity Markets Authority (GEMA), the body that bears responsibility for administering a government scheme whereby energy providers are required to invest heavily in the installation of energy efficient measures – including loft insulation – in clients’ homes, had approved the existing method.
The High Court dismissed the manufacturer’s case, finding that its arguments had no substance.
The relevant regulations could not, said the court, be read as prohibiting any gaps in loft insulation, and the interpretation put upon the regulations by the manufacturer was in other respects wholly unrealistic.
The court stated that, due to the unexplained and considerable delay in launching the challenge it would have refused all but declaratory relief, even if the manufacturer’s case had been successful.
The relief sought, if granted by the court, would have required energy suppliers to carry out further work on a substantial number of lofts that had already been insulated.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.
Fire door compliance in UK commercial buildings
Architect and manufacturer gives their low down.
Plumbing and heating for sustainability in new properties
Technical Engineer runs through changes in regulations, innovations in materials, and product systems.
Awareness of the Carbon Border Adjustment Mechanism
What CBAM is and what to do about it.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.





















