- The Aluminium component of the coating provides a tough physical barrier between the external atmospheric conditions and the inner core of steel.
- The Zinc in the coating sacrifices itself to protect the steel at cut edges.
Inspired by the vibrant colours of Africa,OPTIMA ® is the brand of choice for durable, cost effective, pre-painted steel roofing. OPTIMA® is produced by a unique process whereby rolled steel is continuously hot dipped into a patented alloy of 55% Aluminium, 43.5% Zinc and 1.5% Silicon. This patented coating protects the steel in two ways: