London Wall

Masonry conservation

The remains of the London Wall date back to around 200 AD, when Roman engineers constructed the structure to protect the city of Londinium. Built as a defensive boundary, the wall provided security for London’s citizens and defined the edge of the Roman settlement. Although much of it has disappeared over the centuries, surviving sections remain embedded within the modern city, standing as some of the oldest visible structures in London.

Client

English Heritage

Dates

2021 — 2022

Location

London

Grade listing

Grade I

Fabric

Stone

Addressing the Effects of Time

Over many centuries the exposed masonry had begun to suffer from biological growth, vegetation, and deteriorating mortar. In 2021, DBR was commissioned to undertake conservation works to sections of the wall in order to stabilise and preserve the historic fabric. The first stage of the project involved carefully removing vegetation and biological growth from the stonework, clearing the surfaces so that the underlying condition of the masonry could be properly assessed.

Stabilising the Historic Fabric

Urgent repairs were addressed first, focusing on areas where materials had become loose or friable. These interventions included repointing joints and carrying out lime mortar repairs to reinforce weakened sections of the masonry. Where required, consolidation works were undertaken to stabilise vulnerable stonework and prevent further deterioration.

Following the urgent stabilisation works, additional repairs were completed across the affected sections of the wall. Fallen stones were carefully reinstated where possible, using sympathetic lime mortars to ensure compatibility with the historic materials. Through these measured conservation works, DBR helped secure the long-term preservation of this remarkable fragment of Roman London.

Related projects