Riverclack® roofing

The Riverclack lock joins adjacent sheets through a hidden plastic clip — never through a screw, a nail or a rivet. The roofing blanket stays absolutely watertight across the entire surface, with no leak point at any seam.

The integrated drainage channel handles water at a 0.5% slope for 500/550 mm panels (the 600 mm sheet requires a 5% minimum) — where a classical standing seam would demand 7-10%. This unlocks contemporary near-flat geometry for stadiums, terminals and pavilions.

The installer steps on the joint and the lock snaps closed. Three classical steps disappear: the seaming-machine pass, the pre-set clip grid, and the transverse panel joint. Typical savings are 50–60% of installation time vs mechanically-seamed standing-seam; the manufacturer cites up to 75% on long-span and complex roofs (riverclack.com).

The H18/H19 temper of the EN AW 5754 alloy gives the panel mechanical resistance both to cyclic foot traffic and to hailfall. Point load up to 400 kg — without permanent deformation. Service the PV array, clear snow, run cable trays — without dedicated walkways.

The 0.7 mm sheet self-curves without permanent deformation at radii above 25 m; for tighter geometries the panel is mechanically roll-bent at the factory down to R 3 m convex and R 8 m concave. Tapered sheets clad cones and domes. Roof and facade resolve into a single line of metal — no flashing strip, no expressed joint.

A profile clamp grips the seam from above and holds the PV module by its own clamping force. Not a single screw crosses the metal — the manufacturer's water-tightness warranty stays intact.

The standing-seam aluminium is the waterproofing layer — there is no polymer membrane to perish under the substrate. Build-up: root barrier, drainage reservoir, filter, growing medium, planting.