The subject buildings were a terrace of domestic residences of cavity construction, circa 1970s.
Our inspection revealed many significant cracks to and from windows and to the lower valley of the roofs, along with evidence of many previous repairs. No expansion joints were noted.
The cracking noted was not attributable to significant subsidence but to seasonal moisture, thermal expansion and contraction (i.e. hygrothermal). This considerable length of continuous brickwork had been constructed without the benefit of any expansion joints.
AWT completed a remedial scheme that provided a viable repair by introducing expansion joints, bed joint reinforcement beaming and crack stitching.
With a hydraulic twin diamond bladed saw we cut a 10mm wide joint to the full depth of the external skin and thereafter formed a flexible joint, all in accordance with AWT’s methods.