What does T35 trapezoidal steel sheet offer and how much does it cost?

The letter refers to the trapezoidal shape and the number to the nominal profile depth. Sheets sold as T35 can differ in cover width, steel thickness and flange geometry. Specify the exact manufacturer’s variant on the order so the supplier can identify the intended section.

Example cover widths include 1,035 and 1,050 mm. These sheets are not necessarily interchangeable. Grooves, lap geometry and the coated face can differ. For a roof extension or repair, compare cross-sections or mate two samples. Matching rib height alone does not ensure a sound joint.

T35 is used on garages, farm buildings, shelters and commercial roofs. Its distinct ribs give the slope a simple, regular appearance. A suitable wall version may also serve as cladding. Check the proposed application and orientation against the design and the sheet specification.

On a heated building, single-skin metal roofing needs an appropriate insulating build-up. A factory-made sandwich roof panel combines facings and insulation in one component. Its profiled outer face can resemble a single T35 sheet even though the two products form different roof assemblies.

The shape of the section affects sheet stiffness and how loads pass between supports. A deeper T35 section may meet a requirement that a shallower profile cannot. The permissible span still depends on steel grade, thickness and the actual cross-section.

Use the load and deflection tables for the proposed span arrangement. Bearing width and the direction of wind loading matter. T35 cladding and deep structural decking have different uses. Support spacing must come from a calculation. Bending a sample by hand cannot establish a design span.

Minimum pitch varies by product and joint detail. T35 manufacturers specify different limits, and end laps and slope length also matter. Check the installation instructions for the sheet being supplied before fixing the roof angle.

At low pitches, laps and seals deserve special care. Longer sheets may reduce the number of joints along the drainage path but need suitable handling during transport. Weather resistance also depends on the flashings, penetrations and how all these details meet.

A Polish price list effective 28 October 2026 quoted a sheet with 1,035 mm cover width, 0.50 mm steel and a 25 µm polyester coating at approximately €9.21 net or €11.32 including 23% VAT per m² of effective cover. The 0.70 mm version in the same coating group was €14.05 net or €17.28 gross per m² of cover. Euro equivalents use the site’s 12 November 2026 rate of €0.231723 per PLN.

These figures illustrate an unnamed catalogue entry. They are separate from any quotation by Sandwich-panel.eu. Configuration and order terms affect the final amount. Allow for flashings, fasteners, optional anti-condensation fleece and delivery. If a competing quotation uses the total sheet area, convert it to effective cover before comparing prices.

Choose fasteners for the substrate and design loads. Edge zones may require a different fixing pattern from the centre of the roof. Seat sealing washers with the correct pressure. Align the sheets without forcing the profile, and cut them with tools that avoid damaging the protective finish through excessive heat.

After fitting, remove swarf and debris from the ribs. Check drainage and flashings periodically. An anti-condensation fleece needs opportunities to dry and provides no substitute for thermal insulation. In humid premises, assess ventilation and moisture control across the whole assembly.

State the building use, exact profile, steel thickness and coating, together with sheet lengths and quantities. Confirm the visible face, cover width and unloading arrangements. Supply the designed support spacing if available. Where no design exists, the T35 label cannot replace a structural assessment.

T35 combines a simple section with a broad choice of configurations. Select the one whose documented dimensions and performance suit the job. This makes it easier to compare total cost, install the roof correctly and obtain compatible components for maintenance later.