Private Apartments: New Build
Winner: Sovereign Quay, Cardiff

Sovereign Quay, Cardiff, is a prestigious waterfront development of apartments, constructed with external wall insulation. The site is exposed to high winds, so weatherproofing, avoidance of cold bridging and good thickness of insulation to achieve high U-values and reduce heat loss, compensate for large areas of glazing. The application of good air seals around openings was also a prime consideration.

The architect, David Evans of Goddard Manton, wanted a single homogenous cladding material to create the effect of a sculpted structure. The StoTherm Mineral system was used over a metal stud construction, finished in a white acrylic render, with horizontal banding to emphasise the linear form of the building as it steps down in height along the dockside.

The system designer was Sto Ltd; the installer, Joyner PA (Cymru) Ltd - both INCA members.