Stitch Core Drilling for a New Stairway Opening at the Diplomat Hotel, Johannesburg CBD

When the Diplomat Hotel in Johannesburg CBD needed a new stairway opening cut through solid concrete, they turned to Vus Core Drilling to get the job done right.

Creating a stairway opening isn’t as simple as breaking through a slab – it requires accuracy, control, and zero compromise on structural integrity. Our team used the stitch core drilling method, drilling a continuous sequence of overlapping holes along the exact outline of the required opening. Once each core is drilled, the overlapping pattern lets the section be lifted out as a clean, unified piece – leaving a smooth, controlled edge without the cracking, vibration, or unpredictable breakouts you’d get from traditional demolition methods.

• • Precision: Every core followed a tightly controlled, overlapping path, giving the contractor a clean, accurate opening exactly where it was needed.
  • Structural safety: Core drilling minimises stress on surrounding concrete, protecting the integrity of the slab and nearby structure – critical in an occupied, operating hotel.
  • Clean, low-disruption process: No jackhammering, no unnecessary dust and debris, and far less noise disruption in a live commercial environment like the Diplomat Hotel.
  • Reliable turnaround: Working in an active CBD building means tight access and tighter schedules. Our team got in, executed the cuts, and kept the project moving.

This job is a good example of what core drilling does best: solving structural challenges in occupied, high-traffic buildings without the chaos of conventional breaking. Whether it’s a new stairway, a lift shaft, ducting, or service penetrations, the same principle applies – drill smart, protect the structure, and keep disruption to a minimum.