The Orangery Extension is a timber-framed, garden-facing addition with a sedum green roof, designed to bring in natural light and connect seamlessly to the new terrace keeping the feel modern and blending with the current home design
This country home extension exemplifies a sophisticated architectural response that honors the heritage of the existing period property while introducing contemporary spatial qualities. The orangery addition employs a carefully considered massing strategy, defining perfect proportions by sitting lower than the main house’s eaves line to ensure visual subordination while maintaining generous interior ceiling heights. The timber-framed structure features a hybrid roof design that combines traditional pitched terracotta tiles on the garden-facing slope with an innovative sedum green roof on the house-facing aspect, visible from upper-floor windows and providing ecological benefits including rainwater attenuation, thermal insulation, and habitat creation. The central rooflight punctuates the composition, creating a dramatic focal point that draws natural light deep into the interior while adding architectural interest to what might otherwise be a simple roofscape. The extension’s L-shaped footprint wraps around the rear elevation, maximising southern exposure and creating distinct zones for different activities, while the generous terrace acts as an intermediary space that blurs the boundary between built form and landscape.
Meticulous attention to proportion, detailing, and material application. The extensive glazing system features slender mullions and transoms that create an elegant grid of French doors and windows, allowing the structure to function almost as a glass pavilion while maintaining structural integrity and thermal performance. Externally, the brickwork has been carefully matched to the existing house in color, texture, and bonding pattern, with bonnet tiles and decorative detailing that echo the Victorian vernacular of the main dwelling.
Internally, the design prioritises light, views, and connectivity—the open-plan layout flows seamlessly onto the terrace through multiple access points, while the ceiling follows the pitch of the roof to create volume and drama. The material palette remains purposefully restrained: natural timber framing, neutral wall finishes, and understated fixtures ensure the architecture itself remains the protagonist, with the surrounding garden providing ever-changing color and texture through the seasons.
The construction methodology reflects a pragmatic approach to heritage extension work, combining traditional building techniques with contemporary materials and systems. The timber frame structure provides flexibility, speed of construction, and excellent thermal performance, while allowing for the large expanses of glazing that define the orangery’s character. The foundation strategy navigates the sloping site conditions evident in the elevation drawings, with stepped footings that accommodate the change in ground level while maintaining structural stability.
The sedum roof installation requires a sophisticated build-up of waterproofing membranes, drainage layers, growing medium, and planting that must be carefully detailed to prevent moisture ingress while supporting plant life—hidden gutters ensure rainwater is managed discreetly without compromising the clean aesthetic. The interface between old and new construction presents particular challenges, requiring careful structural tying-in, weatherproofing, and detailing to ensure both buildings perform as a unified whole.
The rooflight installation demands precision in both structural framing and waterproofing, while the extensive glazing necessitates high-performance double or triple glazing units with thermally broken frames to meet contemporary building regulations. Throughout the construction process, matching materials to the existing house—from brick selection to roof tile sourcing—requires careful specification and site coordination to achieve the seamless integration evident in the completed scheme.
