Metal roofs are becoming more and more popular lately, and there is a good reason for that. A metal roof can cost substantially more than a shingle roof in up-front cost, but the value is well worth the difference.
Advantages of a Metal Roof
Light Weight. One of the major advantages of metal roof sheeting is that, in most of its forms, it is light weight, and therefore portable. Metal roof sheeting in the form of corrugated galvanized iron was a great aid to opening up in their early days. This is still happening today in parts of the developing world. Metal roofs are used almost universally to cover large buildings because of their high strength to weight ratio. The roof of the new Wembley Stadium is an example. It consists of approximately 40,000m² or 11 acres (45,000 m2) of aluminum standing seam sheets, 4 acres (16,000 m2) of which are movable. Zinc / aluminum coated steel is the most commonly used roof sheeting material in Australia’s cyclonic building codes.
Applications of Metal Roofing
Metal Roofing is a very versatile building material. It is durable. It can be used on residential, commercial, industrial, or agricultural buildings. It is not only used in roofing applications, but also may be used as a wall covering. There are many different profiles and styles available to fit most every building situation. Metal roofing in New Construction.
Types of Metal Roof
Corrugated galvanized iron describes the original product that was wrought iron plate coated with zinc and then roll formed into corrugated sheets. This product is still used in some areas. It is still manufactured but mostly used for heritage products. Zinc 55% / aluminum 43% / silicon 1.6% coated steel and sold under various trade names. Metal tile sheets or Stainless steel is also commonly used for harsh conditions. Roll formed and fixed similar to corrugated steel profiles are another type. Copper is usually used for flashing or very small sections like covered entryways. Finally, aluminum – One of the longest lasting metals, but somewhat expensive.
Metal roofs will need recoating once the factory finish wears off. Roof coatings are the preferred material since they are able to stay elastic and withstand the thermal cycling that occurs in metal roofs.