St Georges Chapel

Location: Windsor Castle

Client: The Dean and Canons of Windsor

Architect:

Value: Not disclosed

SFK Consulting has provided ongoing structural advice to the Dean and Canons of Windsor for over 23 years, supporting conservation and repair works across the St George’s Chapel estate.

This has included interventions to the chapel itself—such as masonry repairs to the flying buttresses—as well as works to associated historic buildings including the Canons’ Cloister, the Deanery and the Horseshoe Cloister. All projects sit within a highly sensitive and occupied royal and heritage setting.

The works involved complex historic structures exhibiting a range of issues, including deteriorated masonry, overstressed and deflected timber beams, poorly constructed or altered historic walls, and localised decay such as wet rot in timber lintels. Many elements had been concealed behind later finishes, requiring careful opening-up to understand the original construction. The buildings also remained in active use, imposing strict constraints on access, sequencing and protection of historic fabric, while temporary works such as scaffolding needed to avoid damage and, in some cases, provide structural restraint to fragile elements.

SFK undertook detailed investigations and opening-up works to inform targeted repair strategies.

Solutions included strengthening heavily loaded and deflected timber beams using discreet steel channels, consolidating and pinning weakened masonry, repairing and stabilising timber-framed partitions, and supplementing historic floor structures with new timber where required. In the Horseshoe Cloister, localised defects such as wet rot in lintels were addressed through careful temporary support and replacement, alongside measures to eliminate moisture ingress. For larger-scale works at Canons’ Cloister, SFK developed detailed specifications for access scaffolding and temporary roofing, ensuring safe construction while protecting the historic structures and accommodating complex site constraints.

The works enabled the continued conservation and safe use of a collection of nationally significant heritage buildings.

Structural issues were addressed through carefully considered, minimally invasive interventions that respected the historic fabric while improving stability and performance. SFK’s long-term involvement has provided continuity in understanding the buildings, supporting informed decision-making and ensuring that repairs are both effective and sympathetic to their historic importance.

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