Gloucester Walk

Double Height Glass Doors to London Extension

Gloucester Walk is a prestigious residential street in Kensington. Built on the former grounds of Campden House in the 1850’s, the houses on Gloucester Walk are in the centre of the Kensington Conservation Area.  

IQ partnered with architects to create the rear extension and renovation to the terrace home in London. As part of the side infill extension double height glass doors were used to maximise space. The double height glass doors were part of a glass ‘up and over’ extension to fill the side return of the London terrace home.  

By filling in the side return as part of the London extension, the architects were able to fully open the rear of the London terrace home. The double height glass doors meet with a glass roof to create a double height glass extension to the rear of the building.  


AtelierWest LTD


Kensington, London

The double height glass doors of the London extension stand at 5.7m tall. Created from our slim sliding door system, the double height sliding glass doors offer maximum glass with a slim 20mm vertical sightline of thermally broken aluminium.  

Even at this ultra-tall height, the sliding glass doors are manually operated, possible thanks to the high specification sliding mechanisms and engineering of the glass door system.  


An automated rooflight was integrated into the returning structural glass roof of the side return extension. This automated opening rooflight allows ventilation within the double height glass space and to the piano room which sits just off the interior terrace balcony.  

To the ground floor, the living spaces were further enhanced with the installation of a slim bi-folding door set from IQ which allowed easy access to the small garden. The slim bifold doors sit beside the double height glass doors and act as the day-to-day patio doors for the modern dining area.  

All architectural glazing – including the double height glass doors, the automated rooflight, the bespoke pressings and aluminium bifold doors – were all finished in the same RAL colour of 7021 (black grey). This dark framing finish contrasted well with the light pallet of the interior design including the bespoke timber internal ceiling with its grid pattern design.  

The result is a bright and spacious living space to the rear of this tight London property. 

If you are planning your own double height glass extension or London renovation, speak to the team at IQ today about your architectural glazing requirements.

At the head, the double height glass doors connect with a returning glass roof via a steel post. IQ designed and engineered all elements of this, including the steel beam connection and the subsequent steel beams of the structural glass roof.  

By combining the design and installation of the double height glass, glass roof and steel beams into one design and install subcontract package, the architects are able to achieve a fully cohesive design. The steel connections are covered by PPC bespoke pressings, templated and measured on site to create a perfect fit. The resulting double height glass extension has a homogenous design full of light and connecting multiple areas of the house to the rear garden and sky above.