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Areas of application
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Roofs with a pitch from 3° to 60°. |
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Classes of internal humidity load: 1 to 4. |
VM ZINC®, the choices
Only "PLUS" type VM ZINC® with a specially protected underside:
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Characteristics of this technique
With this warm roof system VM ZINC® PLUS standing seam can be installed on composite panels without ventilating the underside of the VM ZINC® PLUS.
For all applications:
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the substrate of the composite panels (on the warm side of the roof panel) must be covered with a vapour control layer material with vapour resistance always greater than the sum of the resistance of the elements fixed above the vapour control layer. It must be adapted to the internal humidity load of the building. |
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the joints between the sandwich panels must be totally air tight and have good vapour retarder properties. |
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breather membrane (type DALTEX Roofshield or equivalent) should be installed between the VM ZINC® PLUS and the composite panels.
This breather membrane must be open to water vapour and completely watertight. The breather membrane must end into the gutter. |
Structure
A choice of:
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Upper layer of the composite panel: solide wood panels or other panels, all certified for roofing applications (min. thickness: 12 mm).
Particular attention to be put on certification of the upper facing of these panels for roofing usage.
Upper layer able to resist pull out forces of 50daN/standing seam fixing clip (dynamic testing method).
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Aluminium internal and external facing (min. thickness: 0.7 mm for external facing).
Particular attention to be put on certification of these panels for roofing usage.
Upper layer able to resist pull out forces of 50daN/standing seam fixing clip (dynamic testing method).
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No delamination of the panel and pull out resistance decrease under wet conditions.
| N.B. |
The information relating to the installation of the composite panels and membranes is simply an indication.
The choice and installation of these products will be according to the recommendations of the panels and membrane manufacturers. |
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