Installing metal roofing over shingles is one of the best methods to go about it. The majority of homeowners might not be aware that placing metal roofing over the shingles is a great method to extend the life of the new roof and give an extra layer of security. Although it is the quickest installation option, metal roofing cannot be installed on the flattest surface. Read our blog post to learn more about how to install metal roofing over shingles.