MSC Depots (Pty) Ltd engaged a joint venture comprising WK Construction (Pty) Ltd and Wynford’s Civil & Development CC as contractor to construct a container depot at Despatch under a standard JBCC Series 2000 building agreement. Consulting engineers (PD Naidoo & Associates) designed the works and acted as principal agent. After practical completion and the issue of an interim payment certificate for R827 392.03, MSC Depots stopped payment when deflections appeared in the paving used by heavy reach stackers. Correspondence and meetings followed. WK Construction undertook some remedial work but was instructed to stop. The contractor alleged that the problems arose from defective design, not workmanship, and that MSC Depots breached the agreement by failing to pay a certified amount, interfering with the principal agent’s independence, and denying the contractor an opportunity to remedy defects. WK Construction gave notice and cancelled the agreement. MSC Depots sued for damages for breach and repudiation. At the close of MSC Depots’ case, the High Court granted absolution from the instance in favour of WK Construction. MSC Depots appealed to the Supreme Court of Appeal.