If you are replacing your roof, the cheapest choice on day one is usually obvious: asphalt shingles. That is why shingles are so common. They are familiar, widely available, relatively fast to install, and usually much less expensive upfront than metal roofing. But roof replacement is not only a day-one purchase. It is also a long-term ownership decision. A shingle roof may need to be replaced after 15 to 30 years. A metal roof may last 40 to 70 years, and premium metal systems can last even longer. That means a homeowner who plans to stay in the same house More…