Quadriga delivered specialist terracotta conservation works to Canada House, a Grade II* listed Edwardian Baroque building in central Manchester. Acting as Principal Contractor, the project focused on the careful restoration of the building’s terracotta façades, preserving the architectural character while addressing areas of deterioration across all principal elevations.
Working under Listed Building Consent and in close collaboration with stakeholders, the project required a sensitive balance between repair, replacement and conservation to ensure the long-term protection of the building’s historic fabric.
The Challenge
Canada House is a landmark building whose richly detailed terracotta façade is central to its architectural significance. Over time, sections of the façade had suffered from deterioration including cracking, spalling, sulphation and localised loss of decorative detail.
Many of the affected elements were highly decorative and formed part of complex architectural features such as keystones, mullions, capitals and cornices. Repairing these elements required careful assessment to determine where conservation techniques could be applied and where full replacement was necessary.
Another key challenge was ensuring any new terracotta units blended seamlessly with the historic material in both colour and texture.
Our Approach
Quadriga undertook a comprehensive programme of terracotta conservation across the building’s elevations. The works included specialist cleaning to remove carbon staining and reveal the original colour of the masonry, alongside targeted repair of damaged elements.
Where deterioration was minor, micro repairs and indent techniques were used to restore decorative detailing. Severely deteriorated blocks were replaced with bespoke hand-made terracotta units, manufactured from site-taken moulds and kiln-fired to match the original material.
Lime-based mortars compatible with terracotta were used for repointing, and displaced high-level units were carefully stabilised. Extensive colour matching trials and test panels ensured new units blended naturally with the historic façade.
The Result
The project successfully restored the building’s terracotta façades, safeguarding their structural integrity while preserving the distinctive architectural character of Canada House.
Through careful conservation and specialist craftsmanship, the works have extended the life of the original fabric and ensured the building’s intricate detailing continues to contribute to Manchester’s historic streetscape.
The scheme also demonstrates Quadriga’s expertise in the conservation of complex terracotta façades, combining traditional craft skills with modern conservation techniques to deliver large-scale heritage restoration projects.