DUMUZAS is a revolutionary brand of products made from steel that is coated with an alloy of 55% Aluminium, 43.3% Zinc and 1.6% Silicon. In this unique combination, the strength of steel, the barrier protection of Aluminium and the cathodic protection of Zinc all complement each other, resulting in a product with extremely long life, (Up to 4 times that of ordinary galvanised products). It also offers better heat reflectivity that results in cooler interiors.