Exterior Work No Stone Untouched

Roof Ironwork Windows Masonry

From leaks in the roof to crumbling mortar in the walls, the exterior of the Library of Parliament was in a seriously deteriorated condition when the rehabilitation got underway in 2002. Not only were there structural concerns, but the effectiveness of the building envelope (roof, windows and masonry walls) had become significantly compromised.

Masonry deterioration at main entrance. July 20, 2001

A building's exterior envelope should keep the elements out while enabling consistent and energy-efficient climate control inside. Having a sound, reliable envelope is especially important for the Library's collections, which require precise humidity and temperature controls, and for ensuring the longevity of the building itself. Repairing that envelope while preserving the historic aspects of the building was an important objective of the rehabilitation project.