A new technical guide Mortars: materials, mixes and methods, a guide to repointing mortar joints in older buildings has just been released by the Heritage Council of Victoria.
Written by David Young OAM, an acknowledged expert in the use and application of traditional mortars, and supported by the heritage councils of each state, the new technical guide is an essential resource for anyone wishing to repair older stone or brick buildings in Australia.
Lime was the principal binder in mortars and plasters of Australia’s early colonial buildings, and it continued to be used in domestic construction until the mid-twentieth century. However, major changes in building practices after World War II led to the predominant use of cement in mortars. This change led to a decline in understanding of the properties of lime mortars, their important role in porous masonry, as well as the practical aspects of working with lime. This technical guide helps fill this gap.