A glazed roof extension for FourMarketing, a fashion agency in Clerkenwell, creates additional space for displaying collections and holding events. Steel portal frames support a green roof on glu-lam joists with frameless glazing providing a crisp, clean enclosure to the top floor. An external terrace of galvanised elefant grate surrounds the enclosure, with two silver birch trees in sunken planters giving shading to one end.

Status: Completed 2014

Client: FourMarketing

Cost: £350K