The protection of historic brick masonry with water repellents

An evaluation was made of the performance and the effectiveness of surface treatments, mainly water repellents, applied in the past on historic brick masonry. In the three European countries involved in the project over 60 case studies were carried out. Besides, laboratory research was carried out, so that the two research lines could be combined. The main aim of the project was the assessment of the performance of surface treatments for the conservation of masonry monuments, and, further, to evaluate the risks of failure and damage and to develop methods for the prediction of the performance.