Traditional mortars are eminently workable, effectively porous, economic in use and appropriately durable. Used in buildings for thousands of years, these materials are ideal for repair and conservation work. Unlike cement or modern hydraulic lime, their routine use would make a significant contribution in the struggle against climate change. However, despite the 1975 'lime revival' there remains a deficit in research into the most-used traditional mortars. This book seeks to redress the balance. Drawing upon historic literature, material science and industry case studies, topics covered include: a historical overview of traditional mortars; slaking and mixing hot mixed lime mortars; the essentials of pozzolans, aggregates and lime tempering; plasters, lime washes and sheltercoats, and finally, the revival of interest in the use of like-for-like and compatible mortars. A comprehensive book on the true understanding of hot mixing limes and traditional mortars for the twenty-first century. It is fully illustrated with 286 colour photographs and 11 line artworks. Nigel Copsey is an accredited conservator-restorer and works as a Research Associate in the Dept of Archaeology, University of York.

This best practice guide to using hydraulic lime mortar is the result of a research project by the UK Limes team which studied the performance application and classification of hydraulic limes for the construction industry. It will prove invaluable for all building practitioners, contractors and tradesmen specifying or handling hydraulic lime on site. Containing many useful tables and charts to assist the practitioner, along with colour illustrations showing lime mortar in use, it also offers practical guidance on: the functions and properties of hydraulic lime; the constituent materials; mixing, reworking, protection and aftercare; and, mortar selection for durability, and health and safety issues

First published in 1927 by the Building Research Station, this volume provides a classification of lime and a complete review of its various uses in building construction and repair. This facsimile edition should be of interest and of practical value since the methods, terminology and practices detailed by Cowper are still valid today. A brief historical introduction to the subject is followed by a section on the process of lime burning which emphasizes the differences in behaviour of the various classes of limes. The results of research and tests to determine the most reliable and lasting limewashes and lime-based cold water paints are also detailed. In addition, the book provides useful information on the common problems occurring with lime plasters and how these can be solved. The classifications based and suggested applications in the book offer guidelines for the conservation practitioner.

Mortars, Renders and Plasters provides a broad perspective of contemporaryconservation theory and practice not otherwise found in one publication, describing the history,physical properties, and deterioration of these important materials. Methods of assessing condition and evaluating options for treatment and repair are discussed, together with a range of practical conservation techniques and maintenance strategies.