English Heritage Stone Building Conservation Grey slates of the South Pennines Individual building stones Strategic stone study 1 Research 2 Publications and advice 2 Influencing legislation Identifying and sourcing stone for historic building repair Stone slate roofing technical advice note Stone slate delphs – making a mineral planning application Symonds report Mineral Planning Statement 1

Authenticity Lias limestone inserted in a sandstone wall English Heritage Stone Building Conservation Repair and conservation of stone buildings

Authenticity Appearance Indian sandstone roof – wrong colour, wrong format English Heritage Stone Building Conservation Repair and conservation of stone buildings

Authenticity Appearance Technical compatibility Incompatible porosity sheds water into the surrounding stone English Heritage Stone Building Conservation Repair and conservation of stone buildings The first choice is stone from the original source

20 kilometres English Heritage Stone Building Conservation Repair and conservation of stone buildings Loss of stone sources Contraction of the industry Brownfield development Amenity development Environmental protection National Park

20 kilometres square metres English Heritage Stone Building Conservation Repair and conservation of stone buildings National Park Loss of stone sources Contraction of the industry Brownfield development Amenity development Environmental protection

Repair and conservation of stone buildings 20 kilometres square metres English Heritage Stone Building Conservation National Park Loss of stone sources Contraction of the industry Brownfield development Amenity development Environmental protection Develop a dialogue between English Heritage and Natural England to resolve the issues.

Symonds report Sourcing local stone Mineral planning should include: A policy steer Emphasise the need for building and roofing stone Safeguarding of sources Promote a database of building and roofing stones and their sources Good mineral planning practice guide English Heritage Stone Building Conservation

Symonds report Minerals Planning Statement 1 Sourcing local stone Safeguarding English Heritage Stone Building Conservation Mineral planning authorities should protect sources of stone needed for historic buildings. English Heritage should advise which sources are important.

Symonds report Minerals Planning Statement 1 Stone study Sourcing local stone English Heritage Stone Building Conservation Where did historic stones come from?

English Heritage Strategic Stone study Symonds report Minerals Planning Statement 1 Stone study Sourcing local stone Where did historic stones come from? Research with British Geological Survey and local geological groups. At the end of the four year study the results will be available free online

English Heritage Strategic Stone study Resource Symonds report Minerals Planning Statement Stone study What is accessible? Sourcing local stone

English Heritage Strategic Stone study Resource Worked out Symonds report Minerals Planning Statement Stone study What is accessible? Sourcing local stone

Resource Worked out Residential buffer zones English Heritage Strategic Stone study Symonds report Minerals Planning Statement Stone study What is accessible? Sourcing local stone

Resource Worked out Residential buffer zones Environmentally protected Accessible English Heritage Strategic Stone study Symonds report Minerals Planning Statement Stone study What is accessible? Sourcing local stone

Resource Worked out Environmentally protected Residential buffer zones The potential availability of accessible stone is further limited by the willingness of the land and mineral owners to work the resource and of entrepreneurs to risk the cost of establishing production. English Heritage Strategic Stone study Symonds report Minerals Planning Statement Stone study What is accessible? What is potentially available Sourcing local stone

Are all stones equally important? Intrinsic value English Heritage Strategic Stone study Technical importance is the extent to which a stone’s properties are special in terms of its suitability to be used. Strength, porosity, compatibility with the surround stone etc. The ‘original’ stone would attract the highest ranking.

Are all stones equally important? Intrinsic value English Heritage Strategic Stone study Technical importance Building importance. Listing of historic buildings is a familiar ranking technique. The higher the grade of the building the more important it would be to use an authentic stone for repairs and the higher ranking the stone would attract. But vernacular buildings and other structures must also be accommodated.

Are all stones equally important? Intrinsic value English Heritage Strategic Stone study Technical importance Building importance Cultural importance A stone may have a high cultural value even if it has only been used in one or a small number of architecturally or historically significant buildings. A stone which has been used for all the buildings within a village is essential to its sense of place.

Are all stones equally important? Intrinsic value English Heritage Strategic Stone study Technical importance Building importance Cultural importance Other important cultural criteria include the contribution to Local distinctiveness Regional character and continuity of use Thematic use Landscape character Village and townscape detailing Aggregating the rankings for technical, building and cultural importance will give the stone’s overall ranking – its relative intrinsic value.

Are all stones equally important? Intrinsic value Is the demand for all stones equal? Market size English Heritage Strategic Stone study The market for an historic stone is proportional to the geographical extent and time span of its use plus the demand for new build but is inversely proportional to its durability

English Heritage Strategic Stone study HERITAGE STONE 1 Locally important 2 Regionally important 3 Nationally important Intrinsic value Accessibility and availability HERITAGE QUARRY A Locally important B Regionally important C Nationally important Market demand - Extent of past use - New build - Durability - Technical ranking - Building ranking - Cultural ranking Comparison with other land designations Safeguarding