Standing Seam Roof Cladding

A standing seam roof is a metal roof system in which the panels are joined only by folding and locking their upstands together, without screws or rivets. Because there is no penetration in the waterproofing plane, watertightness is far higher than on conventional trapezoidal sheet roofs; and since a panel can run in one piece from ridge to eaves, there are no transverse joints either.

The system starts with the selection of the trapezoidal sheet profile and thickness according to the spacing and loading of the steel purlins in the project. Once the trapezoidal deck is mechanically fixed, a vapour control membrane is laid over it, followed by thermal pads and clips. Thermal insulation of the thickness required by the project is laid and mechanically fixed, then the standing seam panels are seated on the clips and the seams are closed with a seaming machine, producing a penetration-free surface across the roof.

The clip connection allows the panel to move longitudinally with thermal expansion, so long-span terminal and hangar roofs do not suffer from stress build-up or deformation. As panels can be roll-formed on site with a mobile line, curved, tapered and free-form roof geometries can also be covered with single-piece panels.

Davtek is the Türkiye territory agency and official installer for Kalzip aluminium standing seam systems. Detailing, wind uplift verification, panel production and installation are handled by a single team, so responsibility for material and workmanship is never split.