Cambridge Road

Contemporary rear renovation with glass roof and sliding patio doors

This elegant rear extension in Twickenham, London transformed the long narrow room into a modern, brightly lit kitchen, dining, and workspace. Frameless structural glazing, exposed brick, and clean solid timber surfaces work together to create a contemporary yet homely living space, while minimal sliding glass doors provide a seamless connection with the outdoor terrace and seating area. 

Thermally broken architectural glass was used to create a glass roof above the sliding doors, with a frameless glass-to-glass connection to a structural glass upstand that gives a heightened sense of space to the dining space at the rear of the renovation.

Project Partners

Architect: 4 Home Design

Location

Twickenham, London

Contemporary Rear Extension with Structural Glazing in Twickenham

This contemporary rear extension in Twickenham, London, transformed a long, narrow living space into a bright and multifunctional kitchen, dining area, and home workspace. By combining high-performance structural glazing, exposed brickwork, and warm timber finishes, the design creates a modern yet inviting interior that maximises natural light throughout the day.

Large sliding glass doors provide uninterrupted views of the landscaped terrace, creating a seamless connection between the interior and outdoor living spaces. The slim-framed glazing allows daylight to penetrate deep into the home while enhancing the sense of openness within the extension.

Above the sliding doors, a bespoke frameless glass roof was installed using thermally broken architectural glazing. A striking glass-to-glass structural connection links the roof glazing to a structural glass upstand, creating a refined architectural detail while increasing the perception of height and space within the dining area.

Frameless Structural Glass Roof Design

The roof glazing was created using the Invisio structural glazing system, enabling the installation of a fully bespoke frameless glass roof with minimal visible framework. Precision-engineered glass-to-glass connections are bonded using slim black silicone joints, concealing fixings and maintaining a clean, uninterrupted appearance.

As the market's only fully thermally broken structural glazing system, Invisio offers exceptional design flexibility, allowing architects and homeowners to create custom roof glazing solutions in a wide range of sizes, shapes, and configurations.

For safety and performance, the structural glass roof incorporates toughened laminated glass, a specification commonly used in overhead glazing applications. The laminated interlayer ensures that, in the unlikely event of glass breakage, the pane remains safely intact rather than falling into the occupied space below.

Minimal Sliding Glass Doors for Indoor-Outdoor Living

A bespoke triple-track sliding door system was specified to maximise flexibility and ventilation. Each of the three glass panels can slide independently in either direction, allowing the doors to stack neatly at either side of the opening depending on how the space is being used.

Featuring ultra-slim 21mm sightlines, the black powder-coated aluminium frames complement the dark silicone glazing joints above, creating a cohesive architectural aesthetic. The result is a high-performance glazing solution that delivers expansive views, enhanced daylight, and effortless access to the outdoor terrace.

 

 

Additional Rooflight for Maximum Natural Light

To further enhance daylight levels within the extension, a large frameless rooflight \was installed deeper within the floor plan. Positioned above the central living space, the thermally broken rooflight helps flood the interior with natural light throughout the day, reducing reliance on artificial lighting.

Internally, the rooflight offers a completely frameless appearance, reinforcing the clean architectural lines of the extension while emphasising the height and volume of the room. Combined with the structural glass roof and sliding glazing system, it creates a bright, open-plan living environment that feels spacious, connected, and contemporary.

Technical Details

 

  • Bespoke Invisio thermally broken structural glazing was used to create the frameless glass roof and vertical glazed elements, delivering uninterrupted glass-to-glass connections with concealed structural supports.

  • The roof glazing was specified using toughened laminated safety glass, providing high structural performance while ensuring occupant safety by retaining the glass in place in the unlikely event of breakage.

  • Slim black silicone joints between each glazed panel conceal fixings and create a clean, near-seamless appearance that enhances the minimalist design aesthetic.

  • A triple-track minimal sliding door system was installed, allowing all three glass panels to slide independently and stack to either side of the opening for maximum flexibility and ventilation.

  • Ultra-slim 21mm sightlines minimise visible framing, maximising glazing areas and creating uninterrupted views between the interior living space and outdoor terrace.

  • Black powder-coated aluminium frames were selected to complement the exposed brick and contemporary interior palette whilst aligning visually with the structural glazing junctions above.

  • A frameless glass-to-glass connection between the roof glazing and structural glass upstand creates a heightened sense of volume and allows daylight to penetrate deep into the extension.

  • An additional fixed frameless-effect rooflight was incorporated further into the floorplan, ensuring consistent levels of natural daylight throughout the kitchen, dining and workspace.

  • The combination of overhead roof glazing, structural glass elements and large-format sliding doors significantly improves daylight distribution, reducing the need for artificial lighting and enhancing the perception of space.

Looking to transform your home with bespoke structural glazing and minimal glass doors? IQ Glass works closely with homeowners, architects, and contractors to deliver technically advanced glazing solutions that maximise natural light, improve thermal performance, and create seamless connections between inside and out.

Speak to the IQ Glass team today to discuss your project and discover how our structural glazing, frameless rooflights, and minimal sliding door systems can help bring your design vision to life.