The mill at 6 Great Marlborough Street forms part of Manchester’s industrial heritage and sits within Little Ireland, the earliest area of Irish settlement within the city. The sensitive restoration plans make a feature of the historic building fabric, exposing the original brickwork and beams internally, while incorporating more contemporary elements such as building services and modern windows.
The design team prepared the fit-out using the Royal Institute of Chartered Surveyor’s SKA Rating environmental assessment method – targeting a Silver rating certificate. As part of this process, they identified an opportunity to upgrade the thermal performance of the poorly insulated pitched roof. To minimise heat loss through the roof, a construction combining Kingspan Kooltherm K7 and K107 Pitched Roof Board was installed.
Kingspan Kooltherm K7 and K107 Pitched Roof Board can achieve thermal conductivities as low as 0.020 W/m·K and 0.018 W/m·K, respectively. In combination with their low emissivity foil facing, this makes them among the most thermally efficient pitched roof insulation materials in common use.
As the original roof slates have been retained, the boards were cut to size by hand and fitted between and below the existing roof rafters from inside the building. This premium specification allowed the target U-value to be met with the slimmest possible construction – maximising floor to ceiling heights in the top storey spaces in the five-floor building.
Kingspan Kooltherm K7 and K107 Pitched Roof Board are produced under an integrated management system which is certified to the highest standards, including ISO 9001: 2015 (Quality), ISO 14001: 2015 (Environmental), BS OHSAS 18001: 2007 (Health and Safety) and ISO 50001: 2011 (Energy).
Their insulation core is manufactured with a blowing agent that has zero ozone depletion potential and low global warming potential.