Standing Seam provides an exceptional aesthetic appearance, a leak-proof, decorative design, and a weather-tight roof under all circumstances. Metal roofing sheets can be produced in long lengths on-site in flat, curved, concave, convex, and tapering shapes depending on project needs. Clip/Halter specification: Secret (Hidden) extruded solid aluminum clips with a black polyamide thermal barrier pad of 4mm height. Clips are capable of transmitting all real-time forces to the purlins without the aid of any other material which will result in an overall 'Self Supporting Seam Roof System' Because of its clip (Halter) design and secretly fixed standing seam system the thermal expansion of the zip roof is accommodated by the movement of the sheet over the halter (clip) and whilst expansion across the sheet is accommodated by the flexibility of sheet profile and clip and sheet jointly system. Halters can be made from Galvanized and aluminum material as per requirement.