T18 WT steel sheet, 774 mm wide and 2.5 m long, zinc finish

Thickness is not the only way to achieve stiffness. Trapezoidal steel uses a formed cross-section: longitudinal ribs allow a lightweight sheet to act as a roof covering, wall cladding or, in certain profiles, a structural component. This geometry combines low weight with efficient coverage and a wide range of possible uses.

Flat steel sheet bends readily between supports. Forming a trapezoidal profile increases bending stiffness without a proportional increase in steel use. Profile depth, steel thickness and rib geometry can therefore be selected for the load. A shallow profile with a large cover width is often sufficient for wall cladding; roofs and loadbearing applications may call for something different. The customer can choose the sheet for the job without resorting to a heavier covering simply to obtain stiffness. This is particularly useful on shelters, farm buildings and halls, where large surfaces make a simple construction economical.

A single sheet can close a substantial area of roof or wall. Compared with small-format coverings, fewer parts need positioning, and simple roofs lend themselves to an efficient cutting plan. Low weight is useful when refurbishing older buildings, once the structure has been assessed. The sheet also provides a finished face without a heavy top layer. In a garage, wood store or machinery shelter, more of the budget can go towards the intended use. On heated buildings, combine the sheet with separate insulation. On an open shelter, the covering alone can keep off rain without unnecessary additional layers.

Service life depends on the protection of the steel substrate and on the outer coating. Different finishes allow you to match appearance and resistance to the surroundings. Coloured cladding can give a workshop a coordinated look, while a simple metallic finish may suit an outbuilding. Trapezoidal sheets have a quieter pattern than metal tile roofing with its repeated waves. Straight longitudinal lines suit industrial and farm buildings. Vertical or horizontal ribs on a façade can change its apparent proportions. This material has practical and structural uses but also allows a deliberate architectural finish beyond basic utility roofing.

At SteelProfil you can find first- and second-grade trapezoidal sheets, including ready stock. We help choose a roof or wall profile and compare finishes. Promotions and competitive prices are available for purchases ranging from a small canopy to a larger project.