A review of the damp and deteriorated conditions within the basement confirmed to me that the below grade walls could not have been waterproofed. There was also evidence of debris that could only have originated from the inner core rubble of the traditional mass masonry foundation walls. I therefore concluded that the cause of the problem was the destabilization of the foundations due to water leaching the lime binder from the mortar/grout that had been used during their construction. (Illustrated by the Figure) I also concluded that it would be unwise to repair the cracked brick masonry - without first addressing the problem that caused the cracks. (I also did not charge for the ad hoc condition assessment!)
WHAT WAS THE SOLUTION?
This project is one of several case studies discussed within a chapter devoted to “Addressing the Cause - As Well as the Result” within
Investigation, Identification & Restoration
Canadian Project Case Studies