The two-story building was constructed in the 1960’s. It is composed of a steel framework, concrete floor slabs, a timber flat roof with asphalt coating, and brickwork to corners and gable-ends. The windows are constructed from non-thermally broken aluminium profiles with single glazing. This has resulted in great thermal loss, along with draughts around the vents where the seals have perished over time. Some years ago, in an attempt to combat this thermal inefficiency, a solar reflective vinyl film has been applied to the glass, but this is now badly scratched and degraded.
Aesthetically, there are unsightly air-conditioning units in front of the building and in general, the structural integrity will benefit from refurbishment.
In order to bring the building into the 21st century, we arrived at an aesthetically pleasing design that that would be thermally efficient and economical. The front elevation will incorporate SG curtain walling with full-height electrically operated parallel opening vents.
Sequential removal and replacement of the curtain walling would also need to take into account the fact that the offices are still in use during the works.
The high-performance glass is partially tinted and reflective and will create a pure glass effect. It is anticipated that the façade glazing will achieve an overall U-value of less than 1.6 W/m2K.
Clear Line will be documenting the works’ progress over the coming months with weekly updates, challenges and images.