Centre Block

Throughout the conservation and restoration work, four main problems were dealt with: cracked and damaged masonry walls and damaged mortar; the corroded, leaking copper roof; leaking and draughty windows; and inadequate foundation drainage, which allowed water to collect near walls and seep into the basement.

Over the years, rain penetrated outer surfaces through cracks and broken stones. In winter, frequent freeze-thaw cycles exacerbated the damage, and airborne pollutants and salts were carried in with the rain and the snow, causing further deterioration.

Several chimneys and towers needed urgent repairs, as well, to prevent structural collapse.

Completed, south facade (front): September 1997.