Encaustic Tiles Restoration, the Palace of Westminster

Westminster, Greater London

The Palace of Westminster is one of the most recognisable and symbolically important buildings in the world, a Grade I listed structure and UNESCO World Heritage Site whose fabric embodies the political, architectural and artistic ambitions of nineteenth-century Britain. Designed by Charles Barry and Augustus Welby Northmore Pugin following the fire of 1834, the Palace is celebrated not only for its Gothic Revival architecture but also for the extraordinary richness of its interiors. Among its most distinctive features are the encaustic tile floors, integral to Pugin’s vision of a unified decorative scheme in which colour, pattern and craftsmanship reinforce the building’s meaning and dignity.

Over time, these floors had fallen into significant disrepair. Decades of heavy footfall, building movement, environmental fluctuations and piecemeal repairs had led to cracking, surface loss and structural instability within the tile assemblies. In some areas, tiles had become loose or uneven, while previous interventions using inappropriate materials compromised both appearance and performance. The cumulative effect threatened not only the visual coherence of the interiors but also the survival of original Victorian fabric of exceptional rarity and quality.

The project was therefore driven by a clear conservation imperative: to stabilise, conserve and reinstate these floors in a manner that respected their historic significance and ensured their long-term durability within a heavily used working building. Detailed investigation and analysis were undertaken to understand the original construction, materials and patterns, as well as the causes of failure. This research-led approach allowed the project team to distinguish between original fabric, later alterations and damaging repairs, informing a precise and targeted conservation strategy.

Works focused on the careful lifting, repair and relaying of tiles where necessary, prioritising retention of original material wherever possible. Damaged tiles were conserved rather than replaced, while missing elements were reproduced only where essential, using methods and materials compatible with the historic fabric. Substrates and bedding layers were addressed to resolve underlying structural issues, ensuring that repairs would be durable rather than cosmetic. Throughout, interventions were meticulously recorded, recognising the importance of documentation within a building of such national significance.

The project also demanded exceptional coordination and craftsmanship. Working within a Grade I listed building in continuous parliamentary use required careful planning, sequencing and collaboration, ensuring that conservation works were delivered with minimal disruption while meeting the highest technical standards. The skills of specialist craftspeople were central to the project’s success, bringing deep knowledge of traditional tile manufacture and installation to bear on a complex and sensitive task.

The restoration of the encaustic tiles represents a remarkable achievement in material conservation. By addressing long-standing deterioration with precision and care, the project safeguards an essential component of Pugin’s decorative scheme and preserves a vital expression of Victorian craftsmanship.