Each have 24 louvred vents, with each unit equalling 10,800mm2 of vented area.
Wind-driven rain hits the mesh directly behind the louvres and runs down the cavity area between the mesh and pan of the sheet, running out the unsealed bottom.
The riveted vent acts as a truss across the tops of the profiles, requiring no additional support system and adding extra strength to the sheet. A silicone bead is required to seal the profiles at the top only.
Comes in all Colorbond colours, Zincalume and Galvanised.
Meets B.A.L 29 with the exception of Galvanised, which extends to F.Z.
One recommended way to install:
Rivet (coloured rivets supplied) onto the external wall sheet on top of (supplied) woven mesh after drilling 2 x 20mm holes into adjacent internal pan of sheet opposite each louver then repeat spacing 35 mm below each pair (the height of each louver).
The best way of doing this is to use a step or cone drill.
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