Sourcing Stone for Historic Building Repair

BookSourcing Stone for Historic Building Repair

Sourcing Stone for Historic Building Repair

Historic England Guidance

2016

August 3rd, 2016

£22.50

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This Technical Advice Note is aimed at architects, surveyors, engineers, building managers, contractors, conservation officers and owners who need to obtain matching stone for repairing a historic building or monument.

Successful stone replacement requires detailed knowledge of the characteristics of the stone involved and the selection of compatible materials (that is stone that closely replicates the original in terms of its chemical, physical and mineralogical properties).The stone-sourcing process involves several steps:

• establishing the significance of the building, and the likely impact of intervention
• understanding why the stone is deteriorating
• undertaking a survey to determine the need for stone repair or replacement
• determining the types of stone used, by visual examination in situ
• answering any technical questions arising in the steps above, by detailed analysis of samples taken from the structure
• obtaining samples of potential replacement stone for analysis, and testing these where necessary
• sourcing replacement stone from existing quarries, quarries temporarily
re-opened for the purpose or by re-using stone salvaged from a demolished structure

Advice on each step is provided, enabling readers to make informed decisions at every stage of the procurement process and thus helping to ensure that any new stone is compatible with the historic fabric.

Historic England supports the need for strategic and sustainable sources of stone for conservation of historic buildings. It is working with partners to ensure that historic sources of important building stones are identified and protected, and that the environmental impact of their extraction is minimised. Addressing the wider issues arising from sourcing and quarrying stone will contribute to the long-term preservation of our rich and diverse stone-built heritage.

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Table of Contents

Section TitlePage
• Introduction
• Existing stonework
• Sampling and analysis
• Selection criteria
• Sources of stone
• Stone for repairs
• Mortar for repairs
• Further information
• Bibliography
• Appendix