At Hirst Conservation we regularly act as consultants on both small and large scale projects. We also undertake condition surveys, to record the present condition of the object/building, highlighting areas of failure or concern; better understand the nature, history, technology and significance of the object; investigate previous interventions; identify causes of historic and ongoing deterioration and finally, to present conservation recommendations based on the results of the survey. A bound and illustrated report is provided, in which the findings of the survey are detailed, along with recommendations for the development of an appropriate strategy for stabilisation. Having worked closely with English Heritage, the Cathedral and Church Buildings Commission and Cadw, Hirst Conservation keeps up-to-date with the documentation requirements of these organisations.
Following a survey, we may recommend the use of Humbug data loggers to monitor environmental conditions inside and outside a building over a period of time. The results are interpreted to establish daily and seasonal fluctuations in temperature and RH, identifying potential hazard periods. We also undertake moisture and salt profiling of historic fabric using protimeters, capacitance and/or carbide meters. These instruments can indicate both salt and moisture content of the material being analysed. Additional, non-intrusive salt profiling can be achieved using Merckoquant test strips for nitrates, sulphates and chlorides. All results will be interpreted and recommendations provided for the development of an appropriate strategy to stabilise the building’s environment.