April 8, 2026
Written by Chris A
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The Government’s Future Homes Standard (FHS), coming into force across new dwellings from 2026, signals a significant shift in how building performance is assessed. For architects, developers, and homeowners working at the high end of the residential market, the new regulations will have a clear impact on glazing specification, thermal detailing, and overall design integration.
The updated guidance confirms that glazing will play a critical role in meeting the required uplift in fabric performance. The FHS notes that triple glazing is among the technologies likely to be required in many new homes and that window specifications must be more carefully considered to support low temperature heating systems and improved thermal comfort. The documents also state that the updated Home Energy Model will reflect window performance more accurately than previous compliance methodologies, creating higher expectations for thermal continuity and detailing across the façade. The Future Homes Standard raises performance expectations for glazing, placing greater emphasis on thermal efficiency, airtightness and façade detailing in new residential buildings.
For IQ Glass’s core clients – architects, luxury homeowners, and specialist builders – these changes align closely with long‑recognised priorities: premium thermal performance, sustainability led design, precision detailing, and glazing solutions that integrate seamlessly with the architectural envelope.
Key takeaways from the FHS documentation include:
Higher thermal performance expectations
Triple glazing and the need for more accurate modelling of window performance are highlighted in the guidance. Modest fabric improvements will be required, including “more accurate reflection of the performance of components such as windows”.
Greater emphasis on airtightness and thermal continuity
The FHS outlines that improved airtightness will be necessary, making window and façade junction detailing more critical than ever. Ensuring continuity of insulation and safeguarding thermal lines is cited as a core design requirement.
Compatibility with low temperature heating systems
Because heat pumps operate within tighter performance margins, glazing performance can directly influence internal comfort levels. The FHS stresses the need for specifications that support stable heating performance and occupant comfort.
High thermal performance benchmarks used for cost modelling
The Impact Assessment references glazing performance at 1.2 W/m²K with a cost baseline of £397/m², illustrating the government’s expectations for typical high performance window assemblies in future homes .
These changes place glazing at the centre of building performance. For the architectural community, the expectation is clear: detailing, specification, and early integration will be essential.
While the FHS introduces new challenges for the wider construction industry, IQ Glass has long operated at a standard that aligns with – and often surpasses – the new thermal performance expectations.
Emma Greene, Sales Director at IQ Glass, reinforces this alignment:
“We welcome the updated building regulations and the clarity they bring to the industry. Our product range and technical expertise were already well suited to the updated requirements introduced in 2023, and we continue to stay ahead of the curve. Our in house design team is highly experienced in coordinating where the thermal line of the glazing meets the thermal line of the building envelope, ensuring compliance and performance from the very first design stage.”
This reassurance is particularly valuable for architects seeking guidance and confidence in technical reliability, luxury homeowners navigating complex specifications, and builders needing precision led glazing partners during tender and construction.
From the outset, the FHS has been positioned as a performance based standard that encourages innovation and flexibility. The Government stresses that while overall standards will rise, there is freedom in how energy performance is achieved. This makes specialist glazing input more important than ever for ensuring compliance without compromising design intent.
Dan Finnegan, Managing Director of IQ Glass, emphasises the company’s central role in this transition:
“IQ Glass has always been the first choice for architects specifying glazing because of our technical expertise and deep knowledge of the industry. As performance expectations rise, we are ready to help architects transition to these higher targets with our extensive product range, design knowledge, and proven track record on complex, high end residential projects.”
For senior architects and practice owners, the ability to rely on a supplier that understands thermal modelling, building physics, and challenging architectural geometries remains crucial. For junior architects and designers, IQ’s guidance helps ease the complexity of navigating detailed performance specifications.
Homeowners increasingly value sustainability, comfort, and future‑proof design. The FHS notes improved airtightness and window performance as essential for creating comfortable, healthy homes with stable energy usage. IQ Glass’s thermally advanced systems, electronic and solar control options, and precision detailing all support these goals.
For bespoke builders, the requirement for “more accurate reflection of component performance” in modelling emphasises the need for glazing partners capable of delivering exacting tolerances, coordinated detailing, and proactive technical oversight - qualities long associated with IQ Glass.
The Future Homes Standard will reshape the expectations of architects, builders, and homeowners alike. But for those already working with IQ Glass, the transition will be seamless. The company’s high performance glazing systems, rigorous design integration, and technical leadership align directly with the direction of the new regulations.
As the industry moves toward low carbon, high performance homes, IQ Glass remains ready to support every stage of the journey – from concept design to installation – ensuring that architectural vision, building performance, and regulatory compliance evolve together.
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