does the weight of a metal roof compare to other types of roofing?

Much to many peoples surprise, metal roofs are significantly lighter than other types of roofs. Typically they weigh less than one-third the weight of asphalt/fiberglass shingles; and are as much as 75% lighter than clay, concrete or slate. Will a metal roof rust Genuine 55% Aluminum-Zinc coated steel roofing panels are protected by layers of metallic and polymer coatings. Industry studies have repeatedly shown them to outperform the corrosion resistance of other coated metals. They are available from Colourcoil Industries with 25 year warranty* against corrosion. Does the color fade Colour fading affects all painted surfaces when exposed outdoors. The question is when or rather how fast. Commercial Quality (CQ) pre-painted steel, coated with low quality paints will fade very quickly, sometimes in as quick as 3 to 5 years. On the other hand, Colourcoil high performance pre-painted steel are coated with special paints containing high-performance polymers that have exceptional ...  more