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How to Improve a Manufactured Home With a Metal Roof Over Shingles

Metal roofs are one of the most commonly found forms of roofing. They are often located in rural areas and on barns. Asphalt shingles are used by many residential home builders because they are durable and long lasting. While shingles cannot be installed directly on top of metal roofing, metal roofing can be installed directly on top of shingles. This can add even more protection to your home without having to remove the old shingles.

Metal roofing can be installed on top of shingles.
  1. Inspect the shingles on the roof to look for any cracks or buckles. Verify there is only one layer of shingles. The weight of the metal roofing on top of the shingles will be too much for the plywood to handle if there is more than one layer of shingles. The plywood underneath could collapse if there is too much weight.

  2. Measure the length and width of the roof and multiply the two figures to get the total square footage.

  3. Install 1-by-4 furring strips on top of the roof spaced out every two feet. Hammer in 2-inch roofing nails every two feet up each furring strip. Install the strips all the way down both sides of the roof.

  4. Set the first piece of metal roofing vertically along the furring strips and screw it into place with sheet metal screws. Insert a screw every 12 inches along the panel. Line up the second panel on the edge of the first panel so the two interlock. Install it in the same manner. Continue installing panels down the roof until the first side is complete.

  5. Cut the last piece of the first row to size with tin snips and install it the same way. Line up the first panel of the second row and overlap it by 3 inches over the first panel in the bottom row. Install the second row and all the rows following in the exact same manner the first row was installed.

About the Author

Alexander Callos began writing in 2005 for "The Lantern" at The Ohio State University and has written for various websites, including Bleacher Report, Top Ten Real Estate Deals and Columbus Sports. He has published articles for CBS Sports, SI.com and other websites. He graduated in 2007 from The Ohio State University with a bachelor's degree in public affairs journalism.