St Mark's Square
Overview
A balcony-remediation and cladding package on an occupied high-rise at St Mark's Square, Bromley. With only uncoordinated 2D as-builts to work from, we rebuilt the façade in a 3D model from scratch, did all the engineering in-house, and remediated every one of the 142 balconies — installed around residents over 22 continuous weeks.
- Location
- St Mark's Square, Bromley, London
- Main Contractor
- RED Construction
- Sector
- Residential — occupied refurbishment
- Scope
- 142 balconies remediated + cladding — design, supply & install
- Programme
- 22 weeks, continuous installation
- Engineering
- Structural calcs, thermal analysis, BIM — all in-house
The challenge
St Mark's Square is an occupied high-rise, and the only information available was a set of uncoordinated 2D as-built drawings full of misalignments. On top of that, every balcony needing remedial work was reached through a lived-in flat — so we had to rebuild reliable information before we could design anything, and protect occupied homes throughout.
We modelled it from scratch
Rather than trust the 2D as-builts, our team built a full 3D BIM model from scratch — coordinating the real geometry, exposing the misalignments, and giving us a single accurate source to design against. All of the structural calculations, thermal analysis, façade design and BIM modelling were carried out in-house by our experienced team, with the cladding package prepared for Building Safety Regulator (BSR) approval.
Delivered through occupied homes
We remediated all 142 balconies and installed the package over 22 continuous weeks. Because access ran through occupied flats, every home was protected and handed back clean — the works delivered around residents' lives, on programme and without a break in the run.