In an order, the term starter profile can refer to several different parts. In one case it is the hook for the first section of the covering. In another it is the component that starts a wall of panels or a trim at the plinth. These profiles are not interchangeable. Measurement must therefore be preceded by a description of the location and function. Only then are the widths of the flanges, the heights of the legs and the bending directions determined. Data prepared in this way help to avoid buying sheet metal that fits in name only. The most important information concerns the type of covering or cladding. It is necessary to state whether the profile works with a standing seam panel, a sandwich panel or another cladding. Each system may have its own connection geometry. Even similar external dimensions do not ensure compatibility of the hook or support.

Traditional standing seam and snap-lock panels require different installation methods. It is not worth choosing them only after the substrate has been installed. The differences concern how the joint is formed, the fixing and the thermal movement of the steel sheet. The minimum pitch also depends on the specific solution. Below we explain what to agree before starting the roof. In traditional covering, the edges are appropriately shaped and closed by the installer. A single standing seam has a different formation from a double standing seam, which requires an additional fold of the joint. A snap-lock panel, however, has factory-prepared edges. These are joined according to the system instructions, without treating them as a traditional standing seam to be bent at will.