Building in South Africa: glazing and security

23 September 2026 · 6 min read · Adam Windows drawing office

The South African brief puts security in the glazing, not behind it: a laminated core that holds the glass in place after a strike, key-operated multi-point locking at the sash, and the impact-rated line where the position demands it — all on a solar-control schedule for the bright, hot climate. The units test to SANS 222 / 536 with the report per model, travel crated for the long haul to Cape Town or Durban, and quote at 35–50 days on the solar-control schedule.

The glass-break layer

The working principle is simple and it is in the glass: a tempered lite breaks into dice and releases, so it is a barrier for seconds; a laminated lite breaks into fragments that the interlayer holds, so the opening stays closed after the strike. That is why the security schedule specifies laminated — the entrance leaf on the FD-60 ENTRY runs laminated glass with the key deadbolt over the multi-point schedule, and the high-rise street level carries the laminated core as the glass-break layer on top of the impact rating where the position has it. The interlayer is the member that does the holding, and the specification names it.

The lock schedule, by action

  • Key-operated handles on the ground floor: the CW-60 KEY casement and the TT-75 tilt-turn both take the key cylinder, so the street-facing sash locks from a key, not just a thumb turn.
  • Central multi-point on the doors: the FD-60 pair locks at six points through the meeting stile, with the key deadbolt as the entrance addition.
  • Anti-lift on every sash — the forced-opening move the security review looks for, and the standard line item on the data sheet.
  • The turn position as the security position: the full-perimeter compression of the tilt-turn lock is the state the sash is left in, and it reads the same to an assessor as a locked casement.

Sun control, as part of the same brief

The bright climate and the security schedule share a glazing pocket: solar-control and laminated low-E glass are the standard west-elevation schedule, so the pane that holds the glass after a strike is the same pane that takes the afternoon sun down. The fixed and folding lines carry it — the panoramic fixed on the view elevation, the bi-fold on the terrace that opens the whole face — and the crating is built for the long haul, with the handling the transhipment port gives the container.

SANS, and the document pack

The South African shipment tests to SANS 222 / 536 with the report per model, and the other markets in the region follow their local regulation of record — the drawing office carries both columns on the schedule so the one order ships to both. The report references the configured unit, the crating list runs per crate, and the lead time on the solar-control schedule is 35–50 days through Cape Town or Durban, with Mombasa and Dar es Salaam on the East African run.

Questions

No — the laminated core here is the safety and anti-burglary layer: it holds the glass in place after a strike and buys the time the alarm and the lock schedule work on. Rated ballistic specification is a separate, heavier build.