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Lillie Square, Brompton

Client: EC Properties Limited
Contractor: Colorminium London
Architect:  John McAslan + Partners
Location: Fulham, West London
Balconies: 129 Cassette® Balconies

Sapphire’s offsite balcony system proved to be really quick and efficient to install.

Senior Site Manager – Kier Build (Eastern)


We take a bespoke yet simple approach to each new challenge, incorporating unique detailing and sizing for each Glide-On™ balcony. The approach for Lille Square was no different with uncommon detailing such as an ‘I’ beam look to fascias and tight balustrade deflection tolerances.


Our innovative balcony solutions allow for bespoke requirements. Working with the facade company, we offered training for the install teams and loaned bespoke install equipment to enable quick and simple installation of all the balconies. We were able to create bespoke fascias made from aluminium extrusion, to look like steel ‘I’ beams. Using heat strengthened 12+12mm laminated glass balustrades.

Installation process

Step 1: Working in partnership with the project’s façade contractor, Colorminium, we designed and manufactured 129 projecting balconies using its innovative Glide-On™ Cassette® technology.

Step 2: We manufactured and stored Glide-On™ Cassette® balconies for Lillie Square at our Winchester production facility while balcony connections were completed on-site.

Step 3: Once the façade was complete, the bespoke balcony cassettes (the frame structure and glass balustrade) were delivered to site, preassembled and factory-finished.

Step 4: Using our innovative counter-balance technology, the balconies were lifted into position and simply glided onto the pre-installed brackets.

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