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On this page, you will find all the important information you need to select the right components<\/strong> for the PV substructure on your tiled roof. The following information will give you a basic understanding<\/strong> of the structure of a photovoltaic substructure and help you make informed decisions. The basic structure of a mounting system<\/strong> for your photovoltaic system on a tiled roof<\/strong> always follows a proven pattern. Selecting the right roof hook<\/strong><\/p>\n\n\n\n You can choose between fixed<\/strong> and adjustable roof hooks<\/strong>. Both types are available in different designs and material thicknesses and are suitable for various requirements on your tiled roof. <\/p>\n\n\n\n All of our roof hooks enable you to construct a reliable PV substructure. Adjustable roof hooks offer flexibility for different roof tile heights and shapes. Our recommendations: <\/p>\n\n\n\n Rigid roof hooks offer a particularly stable and simple solution for roofs with a uniform surface. Our recommendations: <\/p>\n\n\n\n <\/p>\n<\/div>\n\n\n\n Selecting the right pan head screws<\/strong> In practice, roof hooks cannot always be attached directly to the rafters. In such cases, the base plate of the roof hook sits on the counter battens and must be securely anchored in the rafters from there through the above-rafter insulation<\/strong>.<\/p>\n\n\n\n The required length of the pan head screw is calculated as follows:<\/p>\n\n\n\n Screw-in depth in the rafter<\/strong> + thickness of the above-rafter insulation<\/strong> + thickness of the counter battens<\/strong> + thickness of the base plate of the roof hook<\/strong><\/p>\n<\/blockquote>\n\n\n\n Important: = 20.5 cm total length<\/p>\n\n\n\n Recommended screw length:<\/strong> <\/p>\n<\/div>\n\n\n\n Selecting the appropriate mounting rails<\/strong><\/p>\n\n\n\n Mounting rails such as our bestseller Profiness1O<\/a> (40×40 mm profile) are used in 95% of all tile roof installations in Germany. Only in certain regions \u2013 such as near the Alps<\/strong>, on the North German Plain<\/strong> or by the sea<\/strong> \u2013 may it be necessary to use reinforced rails<\/strong>. <\/p>\n\n\n\n For such cases, as well as for more complex structures<\/strong> such as cross bracing<\/strong>, we offer individual structural calculations<\/strong>. These calculations provide you with precise information about: <\/p>\n\n\n\n Our service:<\/strong> <\/p>\n\n\n\n <\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n Once you have selected your materials for the lower structure, you still need to select the appropriate screw for connecting the roof hook to the lower rail channel (M10)<\/strong>. hexagon screw<\/strong><\/p>\n\n\n\n Use a hexagon bolt M10 \u00d7 25.<\/strong><\/a><\/p>\n\n\n\n The screw head is threaded sideways<\/strong> into the lower channel of the mounting rail <\/strong>(wider channel for M10 screws).<\/p>\n\n\n\n Then screw the connection together with an M10 hex nut<\/a><\/strong> to secure the mounting rail to the roof hook.<\/p>\n<\/div>\n\n\n\n Hammer head screw<\/strong><\/p>\n\n\n\n Hammerhead screws<\/a><\/strong> offer the flexibility of being inserted at any point<\/strong> along the lower rail channel.<\/p>\n\n\n\n To secure it in place, the hammerhead screw is rotated 90\u00b0 in the channel <\/strong>after insertion so that it jams and holds securely.<\/p>\n\n\n\n Here too, an M10 hex<\/a><\/strong> nut is used to screw the mounting rail securely to the roof hook.<\/p>\n<\/div>\n<\/div>\n\n Disadvantage:<\/strong> Advantage:<\/strong> <\/p>\n\n Profile connector<\/strong> <\/p>\n\n PROFINESS<\/strong> offers various options for connecting mounting rails. <\/p>\n\n <\/p>\n\n PROFINESS<\/strong> offers various solutions for securely connecting mounting rails. Depending on the profile type, the following recommendations apply:<\/p>\n\n In addition to plug-in connectors, PROFINESS also offers other connection types:<\/p>\n\n These alternatives are particularly suitable for special design requirements or increased demands.<\/p>\n\n <\/p>\n\n U-connector<\/p>\n<\/div>\n\n\n\n 4-hole connector<\/p>\n<\/div>\n<\/div>\n\n <\/p>\n\n In addition to plug-in connectors, PROFINESS<\/strong> offers two further options for securely connecting mounting rails: the U-connector<\/a><\/strong> and the<\/a> four-hole connector<\/a>.<\/p>\n\n1) Unterer Aufbau – Dachhaken, Montageschienen und Verschraubung<\/h2>\n\n
\n\nRecommendations depending on the design<\/h3>\n\n\n\n
Adjustable roof hooks<\/h3>\n\n\n\n
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Rigid roof hooks<\/h3>\n\n\n\n
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Determining the correct screw length
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Calculation example:<\/h3>\n\n\n\n
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<\/figure>\n\n\n\n![\"\"](\"https:\/\/shop.profiness.de\/wp-content\/uploads\/2023\/09\/Performance-Montageschiene-Standard-40x40_online-1024x597.jpg\")
<\/figure>\n<\/figure>\n\n\n\nSelecting the right screw for connecting the roof hook<\/h2>\n\n
![\"\"](\"https:\/\/shop.profiness.de\/wp-content\/uploads\/2023\/08\/Connect-Basic-Sechskantschraube-Sperrverzahnung-DIN-933_A2-M10-1024x597.jpg\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/shop.profiness.de\/wp-content\/uploads\/2023\/10\/Connect-Quick_Hammerkopfschraube-28_15-M10x25_online-1024x597.jpg\")
<\/figure>\n<\/figure>\n\nHammer head screw<\/h3>\n\n
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hexagon screw<\/h3>\n\n
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<\/figure>\n<\/div>\nAssembly of profile connectors<\/h1>\n\n
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Connector for 40\u00d740 profile<\/a> <\/h2>\n\n
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Connector for profile 9664-Profiness15O<\/a><\/h2>\n\n
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Connectors for 80\u00d740<\/a> mm and 40\u00d720<\/a> mm profiles<\/h2>\n\n
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These connectors must be screwed in from the outside to prevent slipping<\/strong>.
The following are suitable for this purpose:\n\n
Alternative connection options<\/h2>\n\n
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<\/figure>\n<\/div>\n<\/div>\n\nAlternative profile connections: U-connectors and 4-hole connectors<\/h1>\n\n
U-connector<\/a> <\/h2>\n\n
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