Resources

Stonework

The use of stonemasons experienced in dealing with historic structures, and using lime-based mixes is recommended for conservation work. Dense cementicious repairs will inevitably lead to further damage.

removing stones and repairing pointing should be carried out by hand, if possible - the use of angle grinders should be avoided.
stone replacements should be matching in colour and texture where possible
if specialist mortars are being used for repair, it is important to match the porosity and strength of the mortar to the stone.
old metal fixings, which have rusted and caused damage, should ideally be replaced by stainless steel or phosphor bronze.
Structural defects, resulting from decayed timber elements, or foundation movement, should be rectified prior to any repair or cleaning. This sort of remedial work, as well as the repair of wall cracks arising from timber failure or settlement, is part of the experienced conservation professional's expertise.

Cleaning Stonework

It is important to get professional advice, as different types of stone require different methods of cleaning. For instance, chemical cleaning using acids can be effective in cleaning granite but can be very damaging to lime stone.

Stonecutters/Stonecarvers/Sculptors

In the restoration and conservation of historic buildings, it may be necessary to repair or replicate decorative stone features such as balustrades, decorated architraves and window details, chimney pieces, etc. This is specialised work and needs the services of an expert.

Stone Walling

As well as the repair and restoration of walls to estates, usually built with lime mortar, there is a great need to conserve field boundary walls, built in the traditional manner. Many of these are dry stone walls, single or double, and need traditional expertise to rebuild them effectively, and to avoid inappropriate repairs.

Resources

Stonework

Cleaning Stonework

Stonecutters/Stonecarvers/Sculptors

Stone Walling

Further Reading