If you are the type of homeowner who wants to embark on the installation of a new roof, a metal shingles roofing system will be the easiest to install.
Most metal shingle systems feature a four-way interlocking design, and the panels are usually small enough to be easily installed without using any complicated tools.
The first step is the preparation of the roof deck. In a new construction, metal shingle roofing can be installed over any type of solid sheeting such as plywood or wooden planks / boards that do not have spaces in between them.
Alternatively, a metal shingles roof can be installed over the old asphalt shingles, if you do not want to tear it off, provided there is only one layer of existing shingles on the roof.