This one-day event led by Cliveden Conservation’s Senior Conservator William Skinner, provides delegates with a comprehensive overview of traditional lime, a demonstration of materials and a practical hands-on workshop.

 Suitable for: Architects, surveyors, conservators, conservation officers, skilled practitioners within the heritage sectors, postgraduates studying for a degree related to conservation, or anyone involved with the conservation of heritage buildings.

Course tutor: William Skinner, Senior Conservator, Cliveden Conservation

 The programme (9.30am until 3.00pm)

 The day begins with a look at lime through history, its use within the context of historic structures, its chemistry and how it differs from cement and NHL. The seminar will list the benefits of traditional lime including how it provides permeability to masonry. Delegates will also gain knowledge of Historic England’s current research into NHL strength gains and the hot lime revival.

Tea/coffee (25 mins)

The second half of the morning will focus on the appropriate use of traditional lime mortar within the conservation industry which will be supported by case studies. Delegates will be taken through the whole specification process which covers the importance of analysis, selecting an appropriate mortar and effective maintenance to ensure longevity of the mortar. The seminar will highlight the consequences of inappropriate mortar specification.

Light lunch (45 mins)

The second half of the day begins with a demonstration of materials (limes, aggregates, pozzolans). Delegates will then take part in a hands-on practical session to learn how to repair historic fabric. The day concludes with a question and answer session.

Topics covered
Traditional mortar

Analysis and specification of mortar

Mortar maintenance

Historic repairs

Building conservation

Practical

Demonstration of materials, techniques and tools
Preparation and mixing of lime mortar

Application of lime mortar