We are talking here about galvanized steel which most often works as the basis for metal tiles and straight rib panels. The zinc coating protects the metal from corrosion. On top of that there are several reinforcing layers, including polymer. In this case, steel with applied zinc or Aluzinc may be used. The second coating is more durable, but the cost of such metal tile is more expensive.
Both sheet metal roofing systems made the same metal and installed over spruce wood strapping. Both connected to the lumber by special screws. Straight rib panels profile has an appearance like standing seam, but functions as other metal tile profiles. Like metal roof that looks like Mediterranean style tile, you have to look at metal tile roof.
Designed for severe weather conditions and heavy snow loads in mind, these profiles were produced for consistent long-life building performance. Straight rib panels profile is a perfect roofing solution for agricultural constructions and industrial roof and wall applications. Metal tiles is more popular on residential houses.