Why precast concrete cuts build time by up to 30% on African projects

The single biggest cause of delay on construction projects in Central Africa is not design changes or scope creep — it is waiting. Waiting for blocks to arrive, waiting for in-situ concrete to cure, waiting for a supplier who promised materials three weeks ago.

Precast concrete solves the waiting problem by moving production off the critical path. Blocks, pavers, structural beams and floor cassettes are manufactured in a controlled factory environment while site preparation is under way. By the time foundations are ready, the materials are waiting on site — not the other way around.

At our Yaoundé precast facility, batch production is scheduled against our project programme. Each pour is strength-tested before dispatch. Dimensional tolerances are held to ±2 mm — meaning components fit first time, every time, without the on-site trimming and patching that bleeds hours from a programme.

On the Santa Barbara Estate in Limbe, the combination of precast blocks, factory-made pavers and pre-cast drainage channels compressed the shell construction phase by approximately 11 weeks against the original in-situ programme — a saving of nearly three months on a 30-month project. The estate was ultimately handed over two months early.

The case for in-house precast production is not just speed. Cost predictability improves when you control your own supply chain. Quality control is internal and auditable. And the production line can be scheduled to absorb multiple projects simultaneously — which means the advantage compounds across a portfolio rather than benefiting only one site at a time.