Lime is one of the most important of the traditional materials used in the repair and maintenance of historic buildings and monuments. It is essential to the production of traditional mortars, render, plasters and limewashes. In response to demand, manufacturers and suppliers have made a wide range of lime-based products and related materials and services available. This directory provides architects, conservators and other building and conservation professionals with information on the types of lime and lime products available in the UK and the Republic of Ireland. It lists producers and suppliers of lime-based products with details of product range and current prices. It also includes information on the classification and use of building limes, education and advisory services.