Blenheim Palace, one of the UK’s most treasured landmarks, is undergoing a £12 million roof restoration project, with scaffolding set to dominate its landscape for the next 18 months.
As revealed in an ITV News report, this extensive conservation effort aims to protect the nationally significant ceiling artwork by Sir James Thornhill, which has suffered substantial rainwater damage, mould, and structural cracks.
The scaffolding works, including a massive temporary roof, are being carried out by Allen & Foxworthy Ltd and are expected to be completed by autumn 2025.
However, the full restoration of the roof will continue into autumn 2026. This complex project is critical in safeguarding the 18th-century masterpiece, which sits just an inch beneath the deteriorating roof structure.
The ITV news report highlighted that Blenheim’s Great Hall’s historic ceiling painting is severely threatened. Years of heavy rainfall and snowfall, exacerbated by climate change, have resulted in leaks, wood rot, and failing infrastructure. Buckets strategically placed inside the palace catch the constant drips while urgent measures are being taken to stop further deterioration.
Scaffolding Not Just a Necessity, But an Experience
While scaffolding has become an essential feature of the palace, it is also being celebrated rather than hidden.
Blenheim Palace is turning this restoration into an interactive visitor experience, launching a “Scaffold Experience” on May 1, 2025. This unique attraction will allow visitors to ascend the scaffolding to witness the conservation work up close, enjoy breathtaking views of the estate, and gain insight into the meticulous efforts behind the palace’s preservation.
Blenheim Palace, a UNESCO World Heritage Site, has undergone continuous roof repairs for over 200 years. The current 18-month scaffolding phase marks one of the most ambitious projects in its history.

While disruptions are unavoidable, keeping the palace open to its one million annual visitors remains a top priority.
A spokesperson for Blenheim Palace stated: “We don’t just tolerate scaffolding anymore; we celebrate it. Without our visitors, we wouldn’t be able to fund crucial restoration projects like this.”
The scaffolding will remain a defining feature of Blenheim Palace until autumn 2026, ensuring that this iconic landmark remains protected for the next 75 years and beyond.