Metal roofs have become more and more popular over the past few decades. Their life expectancy, weight, easy installation, and fire resistance are just a few reasons.
Metal roofs should last as long as the house, as long as they are properly installed. If they are, they will seal out water, survive high winds, and easily shed snow and ice. Not only is it resistant to fire, but mildew, insects, and rot are also up there on the list. Warranties vary, but many companies offer 20 to 30 year warranties depending on the type of pain finish and watertightness.
Metal roofs typically only weigh 50 to 150 pounds per square (an area equal to 100 square feet) whereas tile weighs 750 pounds and concrete at 900 pounds per square. Some metals can even be applied over an existing roof without the gutting or tear-off of the current roof.
Metal reflects heat from the sun which minimizes the midday heat gain, meaning it’s not needed to air condition during the day. Even though there is little insulation in the material, the dead space between the metal and roof deck increases energy efficiency.