Exterior Wall Cap Distress


TSA was contacted to determine how to fix a distressed concrete parapet cap at an intermediate roof of a tall building. TSA performed a visual condition assessment and acoustic hammer sounding to determine the extent of apparent damage. The concrete had experienced corrosion of the reinforcing steel, leading to rust jacking and spalling (failure) of the concrete surface.

We then prepared repair documents to address the distress. During construction, we performed ongoing assessments to evaluate the contractor's concrete removal work and assess the surface preparation of the existing concrete because surface preparation is a critical step in successful concrete repair. The distress concrete was repaired with a high-quality polymer-modified cementitious repair mortar.