While McAlpine carries out the construction work on Aberdeen City Council's new corporate headquarters, Glasgow-based LaserClean is steadily restoring the stonework to its former glittering glory.
The face of the grey granite building was steadily blackened over the years as carbon deposits polluting the air took their toll. But the listed building's true colour, which has never been seen by many Aberdonians, is being revealed by the cleaning work.
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A grit slurry is being used to carefully clean the stonework, once again exposing the sparkling grey granite to the sun. The cleaning method was approved by Historic Scotland.
About 40% of that cleaning work has now been completed and decorative features which were barely discernable in the grime, including the leopard's heads which protrude from the Broad Street walls, are now clearly visible.
Marischal College Advisory and Monitoring Board convenor and council leader John Stewart said: "The difference in the colour of the granite as the cleaning work progresses is really quite striking. It is hard to believe that what most of us know as an almost black building will soon be a light grey granite again, sparkling in the sun and once again reminding locals and visitors why Aberdeen is known as the Granite City.
"Marischal College will look quite spectacular once the work has been completed, not least because of its dramatic change in colour restoring the stonework to its former glory."
Re-pointing work will be carried out once the stone-cleaning operation is complete.
(GK/BmcC)
