Galvalum which is an iron-based material with a layer of aluminum and zinc. Because it is made from iron, galvalum is very suitable for use as a structural material, especially as a sturdy and strong roof truss. Galvalum which functions as an outdoor roofing material, gutters, fences and other necessities including large buildings or houses. Galvalume is more resistant to fire, thus minimizing the risk of collapse due to fire.