36 C O N T E X T 1 2 5 : J U LY 2 0 1 2 stone cleaning, grouting, poulticing and plastic repair. Examples are backed up by case studies. A chapter is devoted to continuing care and maintenance, with a series of relevant tasks simply set out. A special topic within this volume is the conservation of masonry ruins. Practical Building Conservation: Glass and Glazing Volume editors Robyn Pender and Sophie Godfraind, English Heritage, 2012, 504pp, ISBN 978 0 7546 4557 3, £58.50 (website price) This volume introduces the history of glass and glass making in relation to buildings, and goes on to explain the symptoms and causes of deterioration and damage, both to the glass itself and to its related glazing components. The volume covers the assessment of failure and deterioration, and treatment and repair techniques. Many real examples and case studies are provided to illustrate particular issues. Continuing care and maintenance are discussed, with a series of tasks simply set out. The volume goes into detail regarding three main sub-headings: windows, stained glass and modern glazing. In each case a history of the specific subject is given, and the particular decay and deterioration problems explained. Repair and conservation techniques are covered for each subject. A range of special topics are covered, including ornamental architectural glass, textured glass, mirrored glass, glass blocks and other 20th century glass. The volume is fully illustrated with colour photographs, tables and technical drawings. Practical Building Conservation: Metals Volume editors Sophie Godfraind, Robyn Pender and Bill Martin, English Heritage, 2012, 474pp, ISBN 978 0 7546 4555 9, £58.50 (website price) This volume introduces the history of metalworking, its production, evolution and architectural metalworking, including extraction, casting and forging. Symptoms and causes of deterioration and damage are explained, with many real examples and case studies provided to illustrate particular issues. Methods of investigation and processes are explained. Treatment and repair is thoroughly explored with tables and technical drawings to explain specific techniques and processes. Cleaning and continuing care and maintenance is discussed, with a series of relevant tasks simply set out. The volume splits the subject into the different metals and their applications, with a full explanation of deterioration and treatment and repair in each case. The areas covered are ferrous metals; corrugated iron; and non-ferrous metals, including lead, copper and copper alloys, aluminium, tin, zinc and chromium. Special topics include metal leaf decoration, metal statuary, and bells. The volume is fully illustrated with colour photographs, tables and technical drawings. Practical Building Conservation: Mortars, Renders and Plasters Volume editors Alison Henry and John Stewart, English Heritage, 2012, 654pp, ISBN 978 0 7546 4559 7, £58.50 (website price) This volume documents the types of mortars and the history of mortars. Regional variations and component ingredients are discussed. The technical and chemical properties of lime and mortar components are clearly explained using tables and diagrams. The nature and symptoms of deterioration are documented and methods of assessment, diagnosis and analysis suggested. The causes of deterioration are extensively discussed, and repair techniques and processes specific to particular mortars and renders or their context are explained. All forms of mortar and render are covered, including decorative techniques, surface treatments and finishes, and architectural plasterwork. Care and maintenance is discussed, as are inappropriate and damaging processes or techniques. The special topics include paints for plaster and render, natural cements, mortar floors, and ruins. All relevant standards are referred to and the testing of new lime based mortars is briefly covered. Practical Building Conservation: Timber Volume editors Iain McCaig and Brian Ridout, English Heritage, 2012, 498pp, ISBN 978 0 7546 4554 2 £58.50 (website price) This volume explains the nature of wood as a natural material, its variety of properties, its durability and its application in buildings. The history of the use of timber in buildings in England and the techniques used in construction (from structural elements to decorative features) are explained with the use of illustrations and technical drawings. The nature and processes of timber decay are comprehensively documented with colour illustrations covering timber decay insects and fungi found in historic buildings in England. The scenarios in which timber decay is commonly found in buildings are explained, and the underlying causes of the promotion of timber decay agents (usually moisture ingress) are documented. Insect and fungal decay are covered, and other agents of deterioration (such as chemical and fire damage) are discussed. The assessment of decay, the causes of failure, and the methods and
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