Codes vary, so call your local building department to know how to install metal roofing over shingles properly ... if the steel roof is installed over an existing asphalt roof, noise shouldn ...

Even over traditional asphalt shingles, it's an advantage ... need replacement every 20 to 30 years. Can metal roof materials be installed over an existing roof? Yes, in many cases, residential ...

The Florida Roofing and Sheet Metal ... shingles. Asphalt shingles have been a longtime favorite for builders in part because of their affordability and because they are easier to install than ...