If you are the type of homeowner who wants to embark on an 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 asphalt shingles, if you do not want to tear it off, and there is only one layer of existing asphalt shingles on your roof.
This instructional guide is based on Fabral’s nailing-strip standing seam system, with 1″ ribs. Before you actually go ahead and order any panels for the job, we recommend that you thoroughly read this guide, and watch the video below to get a better idea of just how involved this can be.
When installing a standing seam metal roof, it is strongly recommended that all asphalt shingles are removed before the installation in order to prevent / avoid the “telegraphing effect” where horizontally installed shingles can punch through the vertical sheet metal roofing panels, causing unsightly dents that cannot be fixed / removed. Also, since most standing seam roofs installed are made out of steel, the granular surface of asphalt shingles will rub against underside of metal roofing panels, and thus will likely scratch through the paint and galvanized layer, which will cause metal panels to rust from underneath.