PD 6678:2005 is intended to provide a framework by which the quality of mortar made on site can be guaranteed and by which specifiers of site made mortars can provide requirements that are consistent with the principles of BS EN 998 and the code of practice for use of masonry mortar, BS 5628.
BS EN 998 provides both prescriptive and design approaches to factory made mortar, but does not cover site made mortar. However, the scopes of BS EN 998-1 and BS EN 998-2 permit the use of national codes of practice or specifications for site made mortars.
Therefore, this guide has been written as the United Kingdom's code of practice for specifying both designed and prescriptive site made mortar.