31 CoWork is an old hardware store that has gone through many lives but has now undergone a complete full retrofit by Artel31 to create a high-end co-working space for creative start-ups. The roof space is being improved with a new dormer, the detailing of which uses a galvanised steel surround to link the historic and the new portions of the building. Sustainable measures: Natural sustainable materials and reused materials; Environmental construction policy to minimise chemical use and construction waste; Passive solar gain regulation/orientation studies undertaken during design; Minimal internal structure to allow future alteration; High insulation levels (low U and Y values).