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Organic materials are particularly vulnerable to deterioration. Wood is very sensitive to changes in relative humidity, leather liable to damage from acidic atmospheric pollutants, and fur, feathers and plant materials are prone to damage from fungi and insects.
The skills of a conservator require an appreciation of the use of materials and techniques of construction, a deep understanding of the nature and behaviour of materials and the reasons why the deteriorate.
The primary focus of conservation within the Trust is to prevent deterioration. For many objects this means that conservation work is limited to maintaining stability and routine care.
Nostell Priory doll’s house, Yorkshire: a cross-section showing many of the organic items likely to be encountered in Trust houses: furniture, architectural woodwork and floors, surface finishes, upholstery and leather.
17th-century gilt leather wall-hanging from Dunster Castle, Somerset, depicting the Battle of Alexandria. The conservation of gilt leather had been extensively researched by the Trust.
19th-century gilt leather wall-hanging from Cliveden, Buckinghamshire; absorption of acidic pollutants has led to 'red rot'.
A bird of paradise from Cragside, Northumberland. Birds and mammals are particularly prone to agents of deterioration, such as light fading, insect damage, rough handling, and temperature and relative humidity fluctuations.
