Separating layer

No Layer

NedZink roofing and cladding material used in a ventilated structure can be directly placed on the timber boarding. These boards are planed, no less than 22 mm, not tongue-and-grooved, installed horizontally with gaps between the boards of at least 5 mm. The heads of the fasteners are countersunk to prevent damaging the zinc bays. Preferably corrosion resistant fasteners are used.

Structured separating layer

When a separating layer is part of the built up, for example with FOAMGLASS construction, a separating layer can be used. The resulting airspace is used for gradual drying of small amounts of moisture still present directly under the zinc surface. It also decreases the possibility of backside corrosion of the zinc material. The cavity is not comparable with the ventilation space used in a ventilated construction and cannot replace its function.

For sound-insulating and sound-reducing properties of the separating layer please contact the manufacturer.

Structured separating layer with foil

This is a vapour permeable waterproofing barrier that can be installed as a separating layer between zinc roofing or cladding and the supporting substructure. The material has on outer layer of polypropylene mesh bonded to a vapour permeable membrane fleece foil.

For small coverings with wooden-based panels the layer can be used only for separation, not as a fully functioning ventilation cavity. This cavity is not comparable with the ventilation space used in a ventilated construction and cannot replace it.

For sound-insulating and sound-reducing properties of the separating layer please contact the manufacturer.