Expansive Glazing to Enhance Light & Connection
A defining element of the project is the extensive use of glazing, which transforms the new extension into a bright, open and visually connected space. The large sliding glass doors, finished in RAL 7021 matt, glide effortlessly from left to right (viewed externally), creating a generous opening and reinforcing indoor–outdoor living.
The doors incorporate a 2‑point shoot bolt lock for security and smooth operation. A key technical challenge was achieving a flawless connection between the sliding door system and the adjacent Invisio structural glazing. As two different systems meeting on a single elevation, the detailing required precise engineering and coordination to ensure weather performance, alignment and aesthetic continuity.
Respecting the Heritage and Core Challenges
Integrating a contemporary glazing package into a Grade II listed property required a series of intricate technical solutions to ensure both structural performance and heritage sensitivity. One of the primary challenges was achieving a seamless junction between the sliding glass door system and the
Invisio structural glazing. As these are two fundamentally different glazing systems with contrasting engineering requirements, the interface had to be carefully designed to maintain airtightness, weather resistance and precise alignment across the elevation.
Thermal performance was another priority, as integrating highly insulated modern glazing with a historic building envelope can create variations in thermal movement. Special attention was given to expansion gaps, drainage paths and thermal breaks to ensure long‑term performance without compromising aesthetics.
These combined challenges required close collaboration between the design team, heritage consultants and IQ Glass’s technical engineers to deliver a contemporary extension that meets modern performance requirements while respecting the building’s protected status.
The completed project offers a harmonious blend of past and present modern performance glazing embedded within a heritage setting. By enhancing natural light, improving views and creating a fluid indoor–outdoor connection, the extension elevates the farmhouse for modern living while safeguarding the charm and character that define its historic significance.
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