Gateway Metalworks installed a galvanised ClearVu high security mesh fence along the steep mountainside boundary of the Institute for Maritime Technology in Simon's Town. The build secures a sensitive Armscor defence research site across difficult terrain, featuring reinforced concrete plinths, razor-coil topping, and a custom access gate.

The Institute for Maritime Technology supports the South African Navy with research into maritime systems, underwater warfare, and autonomous vehicles. The mountainside boundary runs along rocky, uneven terrain with steep gradients, demanding a fence that blocks intrusion, withstands ground movement, and meets defence sector standards.

Gateway Metalworks installed a galvanised ClearVu high security mesh fence along the full mountain boundary. The narrow-aperture mesh blocks climbing, cutting, and tool penetration, while razor-coil topping raises the deterrent level. A continuous reinforced concrete plinth seals the base against erosion and burrowing, with panels stepped up the slope to follow the gradient.

THE CHALLENGE

• • Secure a sensitive defence research site across steep, rocky mountain terrain.
  • Build a continuous fence line on uneven gradients without leaving ground-level gaps.
  • Resist erosion, ground movement, and burrowing along the base of the fence.
  • Withstand coastal exposure to salt air, fog, wind, and strong sun.
  • Maintain clear visibility for security teams monitoring the boundary.
  • Meet defence sector standards for anti-climb, anti-cut, and anti-tool penetration

THE APPROACH

• • Conducted a full site survey across the mountainside to map gradient, rock outcrops, and access routes.
  • Specified galvanised ClearVu high security mesh for long-term coastal performance.
  • Poured a continuous reinforced concrete plinth along the base of the fence to seal ground-level gaps.
  • Anchored posts into deep concrete footings, with rock fixings used where required.
  • Stepped panels up the slope to follow the terrain while keeping a continuous, secure line.
  • Fitted a razor coil along the top of the fence as an added deterrent.
  • Installed stainless steel security fasteners and anti-tamper clamp bars on every panel.
  • Built and fitted a custom access gate matching the main fence security rating.
  • Worked under strict site access protocols suited to a defence facility.