{"id":28719,"date":"2023-10-26T08:24:28","date_gmt":"2023-10-26T06:24:28","guid":{"rendered":"https:\/\/shop.profiness.de\/profiness-mounting-blog\/hole-in-the-wall-screw-mounting-on-corrugated-cement-and-corrugated-iron-roofs\/"},"modified":"2025-11-06T14:36:04","modified_gmt":"2025-11-06T13:36:04","slug":"hole-in-the-wall-screw-mounting-on-corrugated-cement-and-corrugated-iron-roofs","status":"publish","type":"page","link":"https:\/\/shop.profiness.de\/en\/profiness-mounting-blog\/hole-in-the-wall-screw-mounting-on-corrugated-cement-and-corrugated-iron-roofs\/","title":{"rendered":"Hole-in-the-wall screw mounting on corrugated cement and corrugated iron roofs"},"content":{"rendered":"\n

The installation of solar modules on Eternit or corrugated iron roofs poses particular challenges. In many cases, it is not possible to simply screw short rails from wave to wave. That is why we carefully check the substructure beneath the roof covering for these types of roofs. <\/p>\n\n

Similar to tiled roofs, the substructure is anchored to the load-bearing beams using so-called hanger bolts.<\/a><\/p>\n\n

\"\"<\/figure>\n\n

How to install with hanger bolts<\/h2>\n\n
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  1. Determining the fixing points<\/strong>First, determine where the hanger bolts <\/a>will be placed \u2013 at the height of the load-bearing purlins or rafters.<\/li>\n\n\n\n
  2. Drilling the holes<\/strong>A hole is drilled in the desired position on the upper beam of the roof to insert the hanger bolt. It is crucial to drill centrally into the beam to ensure optimum force transmission. <\/li>\n\n\n\n
  3. Inserting the hanger bolts<\/strong>The hanger bolt is screwed deep and tight into the beam with its wood thread. Depending on the roof construction, different lengths and types of hanger bolts are used. <\/li>\n\n\n\n
  4. Connection to the mounting rails<\/strong>First, an adapter plate<\/a> is attached to the protruding hanger bolt. Then the mounting rails<\/a> are installed with the appropriate module clamps<\/a>. <\/li>\n<\/ol>\n\n

    Important information for installation<\/h2>\n\n

    Static safety<\/strong>: Central anchoring in the beam is essential to ensure the stability of the entire PV system.<\/p>\n\n

    Material selection:<\/strong> For a durable and corrosion-resistant fastening, we recommend using only our stainless steel hanger bolts.<\/p>\n\n

    Asbestos hazard<\/strong>: Caution is advised with older Eternit roofs (built before 1993) as these may contain asbestos. In such cases, work may only be carried out by specialist companies with the appropriate certification. <\/p>\n\n

    <\/p>\n\n

    <\/p>\n\n

    Further assembly \u2013 connecting the hanger bolt to the mounting rails <\/h2>\n\n
    <\/div>\n\n
    \"\"<\/figure>
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    An adapter plate<\/a> is used to connect the hanger bolt to the mounting rail. The hanger bolt is inserted through the round hole in the adapter plate and screwed in place. The integrated slotted hole allows for flexible alignment and is used to connect the lower rail channel of the mounting rail with a hexagon<\/a> or hammerhead bolt<\/a> (M10). <\/p>\n<\/div><\/div>\n\n

    <\/p>\n\n

    <\/div>\n\n

    The upper structure \u2013 i.e. the attachment of the solar modules to the upper rail channel with module clamps<\/strong> \u2013 is then carried out in the same way as for conventional tile roof installation.<\/p>\n\n

    <\/p>\n\n

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    2) Upper structure | Clamping of the modules <\/h2>\n\n\n\n
    <\/div>\n\n\n\n

    Vorbereitung<\/h3>\n\n\n\n

    Nachdem die Montageschienen sicher auf dem Dach befestigt wurden, folgt im n\u00e4chsten Schritt die Montage der Solarmodule<\/p>\n\n\n\n

    Befestigung der Module<\/h3>\n\n\n\n

    Die herk\u00f6mmlichen, gerahmten Solarmodule werden direkt am Rahmen auf den darunterliegenden Montageschienen fixiert. Hierbei kommen spezielle Klemmen zum Einsatz, die den Modulrahmen sicher greifen und ihn auf der Schiene festhalten.<\/p>\n\n\n\n