New technical regulations for the roofing trade

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" class="nav-link"><span><img data-src="" class="js_page-image" />Flat roof III - "the shortcut"</span></a></li><li class="level-3-3"><a href="/en/mounting-systems/flat-roof/flat-roof-iii-long-side" title="Our flexible solution for south orientation: Wind tunnel tested ✓ stability through cross rail connection ✓ optimal clamping of modules. " class="nav-link"><span><img data-src="" class="js_page-image" />Flat roof III - Long side</span></a></li><li class="level-3-3"><a href="/en/mounting-systems/flat-roof/flat-roof-ii" title="Our flexible solution for east-west and south orientation: Wind tunnel tested ✓ stability through cross rail connection ✓ optimal clamping of modules. 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" class="nav-link"><span><img data-src="" class="js_page-image" />Insertion system short rail</span></a></li></ul><div class="open-submenu-icon"></div></li><li class="dropdown-item level-2"><a href="/en/mounting-systems/bitumen-roof" title="Classic meets modern: The brand new roof-parallel direct mounting for bitumen shingles and bitumen membranes on wooden formwork." class="nav-link"><span><img data-src="" class="js_page-image" />Bitumen roof<div class="page-description"></div></span></a></li><li class="dropdown-submenu level-2-3"><a href="/en/mounting-systems/corrugated-sandwich-roof" title="The right variant for your project: clamping system ✓ insertion system ✓ cross-system components for fast & efficient assembly." class="nav-link dropdown-subsubmenu"><span><img data-src="https://www.novotegra.com/fileadmin/00_Navigation_Images/novotegra-mounting-systems-corrugated-sandwich-roof-1000x1284.jpg" class="js_page-image" />Corrugated & sandwich roof</span></a><ul class="dropdown-menu level-3"><li class="level-3-3"><a href="/en/mounting-systems/corrugated-sandwich-roof/clamping-system" title="Fastening according to a uniform principle: Cross-system components ✓ single or double layer ✓ for wood & steel purlins ✓ fast and secure. 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Safe & reliable. " class="nav-link dropdown-subsubmenu"><span><img data-src="https://www.novotegra.com/fileadmin/00_Navigation_Images/novotegra-mounting-systems-customised-solutions-1000x1284.jpg" class="js_page-image" />Facade</span></a><ul class="dropdown-menu level-3"><li class="level-3-3"><a href="/en/mounting-systems/facade/metal-facade-short-profile" title="Vertical photovoltaic systems on the facade: Well back-ventilated ✓ flexible system size of module quantity ✓ few individual components. " class="nav-link"><span><img data-src="" class="js_page-image" />Metal facade short profile</span></a></li><li class="level-3-3"><a href="/en/mounting-systems/facade/metal-facade-trapezoidal-bracket" title="Vertical photovoltaic systems on the facade: Well back-ventilated ✓ flexible system size of module quantity ✓ few individual components. 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class="jump-nav-holder js-sticky" id="jump-nav"> <a class="jump-nav-trigger collapsed d-block d-lg-block d-xl-none" data-toggle="collapse" href="#jumpNavDropdown" role="button" aria-expanded="false" aria-controls="jumpNavDropdown"> <span>Contents</span> </a> <div class="container js-jump-nav collapse" id="jumpNavDropdown"></div> </div> <div class="header">  <div id="c42319" class="frame frame-default frame-type-novotegra_headerimageintro frame-layout-0"> <section class="s-main-headline is-center frame-space-before- frame-space-after-"> <div class="wr"> <picture> <source srcset="/fileadmin/_processed_/b/d/csm_dachziegel_flexen_01b4c45d89.jpg 1x" media="(min-width: 1920px)" width="3840" height="2565" /><source srcset="/fileadmin/_processed_/b/d/csm_dachziegel_flexen_9aaea60c1e.jpg 1x,/fileadmin/_processed_/b/d/csm_dachziegel_flexen_78d8d9785e.jpg 2x" media="(min-width: 1200px) and (max-width: 1920px)" width="1920" height="1283" /><source srcset="/fileadmin/_processed_/b/d/csm_dachziegel_flexen_db0fd066f4.jpg 1x,/fileadmin/_processed_/b/d/csm_dachziegel_flexen_ed3ec52497.jpg 2x,/fileadmin/_processed_/b/d/csm_dachziegel_flexen_7322d1e61a.jpg 3x" media="(min-width: 992px) and (max-width: 1200px)" width="1200" height="802" /><source srcset="/fileadmin/_processed_/b/d/csm_dachziegel_flexen_73a28f3c58.jpg 1x,/fileadmin/_processed_/b/d/csm_dachziegel_flexen_8f518e7a29.jpg 2x,/fileadmin/_processed_/b/d/csm_dachziegel_flexen_beec4e7e3f.jpg 3x" media="(min-width: 768px) and (max-width: 992px)" width="992" height="663" /><source srcset="/fileadmin/_processed_/b/d/csm_dachziegel_flexen_e434c1ec35.jpg 1x,/fileadmin/_processed_/b/d/csm_dachziegel_flexen_42404e9ff8.jpg 2x,/fileadmin/_processed_/b/d/csm_dachziegel_flexen_2df3d76cde.jpg 3x" media="(min-width: 480px) and (max-width: 768px)" width="768" height="513" /><source srcset="/fileadmin/_processed_/b/d/csm_dachziegel_flexen_4e5b2d8c68.jpg 1x,/fileadmin/_processed_/b/d/csm_dachziegel_flexen_fb13ce867e.jpg 2x,/fileadmin/_processed_/b/d/csm_dachziegel_flexen_17030c58f0.jpg 3x" media="(max-width: 480px)" width="480" height="321" /><img class="bg" src="/fileadmin/_processed_/b/d/csm_dachziegel_flexen_01b4c45d89.jpg" alt="" /> </picture> </div> <div class="row"> <div class="container"> <h1>New technical regulations for the roofing trade</h1> <div class="h2 header-intro-subheader">Roof hooks and tile flexing prohibited? </div> <div class="header-intro-text"> <p>An important new publication for solar installers comes from the Zentralverband des Deutschen Dachdeckerhandwerks (Central Association of the German Roofing Trade): new technical rules from March 2024 describe, among other things, the correct handling of roof tiles and roof stones. This is of great importance for the installation of solar systems - because many photovoltaic systems are installed on tiled roofs. </p> <p>We took a look at the "Technical rules for roof coverings with roof tiles and roof stones". We have summarized the most important points for solar installers in this article. If you want to know exactly, you can order the technical rule <a href="https://www.dachdecker-regelwerk.de/" target="_blank" rel="noreferrer">here</a>.</p> <div class="line"> </div> </div> </div> </div> </section> </div>  </div> <div class="content"> <div class="container">  <div id="c42321" class="frame frame-default frame-type-text frame-layout-0 frame-space-before-medium"> <header> <h2 class=""> The importance of the standard roof pitch </h2> </header> <p>In the new "Technical rule for roof coverings with roof tiles and roof stones", the additional measures have been simplified and restructured depending on the standard roof pitch. Recommendations for the attachment of solar systems have been added.  </p> <p>The standard roof pitch is of central importance. This is the minimum pitch of the roof for rain safety. The value can be found in the tile manufacturer's data sheet and can vary greatly - for roof tiles from approx. 16° to approx. 35° pitch. It is therefore worth taking a look at the data sheet or the processing instructions. </p> <p>Additional measures for rain protection are only necessary if the pitch falls below the standard roof pitch. </p> </div> <div id="c42322" class="frame frame-default frame-type-text frame-layout-0 frame-space-before-large"> <header> <h2 class=""> Roof hooks can be used from standard roof pitches </h2> </header> <p>As long as the standard roof pitch is not undercut, roof hooks can be used without hesitation, as was previously the case. This type of fastening corresponds to the state of the art. </p> </div> <div id="c42323" class="frame frame-default frame-type-text frame-layout-0 frame-space-before-large"> <header> <h2 class=""> Special measures when falling below the standard roof pitch </h2> </header> <p>If the standard roof pitch is undercut, the technical rules recommend roof support tiles that fit seamlessly into the existing roof covering without the need for manual adjustment. The product used should have the same properties as the original roof tiles in terms of height and side overlap, as well as water drainage. </p> <p>This means that the usability of the replacement solutions currently available on the market must be checked carefully in each individual case. The use of so-called sheet metal replacement tiles could be incompatible with the technical rule in many cases - namely if they do not allow a form-fit connection. </p> <p>So far, it can be summarized that it depends on the standard roof pitch - if this is reached or exceeded, roof hooks can be used without hesitation as before. It must be ensured that the distance between the lower tile and the bracket of the roof hook is 6 mm, as can be seen in our installation instructions.</p> </div> <div id="c42326" class="frame frame-default frame-type-text frame-layout-0 frame-space-before-large"> <header> <h2 class=""> Loss of warranty due to flexing? </h2> </header> <p>In addition to the choice of fastener, the processing of tiles (the "flexing") during installation is also repeatedly discussed. This has to do with the guarantee provisions of the roof tile manufacturers. It is often claimed in the industry that the end customer "loses the guarantee for their roof". As a solution, some roof tile manufacturers recommend so-called "solar supports". </p> </div> <div id="c42327" class="frame frame-default frame-type-text frame-layout-0 frame-space-before-large"> <header> <h3 class=""> The difference between warranty and guarantee </h3> </header> <p>It is important to distinguish between warranty and guarantee: Warranty is a statutory right, guarantee is a voluntary promise of performance by the manufacturer. </p> <p>There are major differences between the two: While the warranty claim covers the work of the craftsman as a whole, the guarantee applies to each roof tile individually. Processing may invalidate the guarantee of individual tiles - but only the guarantee of precisely these processed tiles. The processing of tiles is completely normal in roof construction and is also carried out on roof windows, dormers and roof superstructures on almost every roof. So almost every roof also contains such "non-guaranteed tiles". </p> <p>In a chain, the warranty is initially directed at the craftsman, who can assert his claim against the seller - who in turn asserts this claim against the manufacturer. </p> <p>Processing the roof tile may invalidate the warranty claim against the roof tile manufacturer - but not the claim against the end customer's direct contact, the solar installer. This is because the craftsman creates his work by processing the tile and installing the roof hooks. And he also assumes the warranty for this - it has never been any different. </p> </div> <div id="c42363" class="frame frame-default frame-type-text frame-layout-0 frame-space-before-large"> <header> <h3 class=""> Technical aspects </h3> </header> <p>There is also no cause for concern from a technical point of view: although the stability of the tile may be slightly reduced by the processing, this has no effect, as loads are transferred via the load-bearing novotegra roof hooks and not via the roof tiles. As long as the roof hooks are installed with a sufficient distance between the bracket and the roof tile, as described in our installation instructions, there is no cause for concern. This type of fastening has been state of the art for 20 years. </p> </div> <div id="c42364" class="frame frame-default frame-type-text frame-layout-0 frame-space-before-large"> <header> <h3 class=""> Legal perspective </h3> </header> <p>Even from a legal point of view, the use of so-called solar beams does not increase safety. This is because no load calculation can be carried out for these elements. In the event of damage to the solar installation, for example due to a strong wind event or high snow pressure, the building owner would therefore not have a tested overall system statics of the mounting system manufacturer and would possibly have difficulties in claiming damages. </p> <p>Furthermore, there is no contradiction with the guidelines for the roofing trade. These merely require that the area of application and the load-bearing capacity of load-bearing roof installation components must be specified and complied with by the manufacturer. This is exactly what our system planning with our "Solar Planit" does. </p> </div> <div id="c42325" class="frame frame-default frame-type-text frame-layout-0 frame-space-before-extra-large frame-space-after-extra-large"> <header> <h3 class=""> As a result </h3> </header> <ul class="list-checkmark"> <li>The use of roof hooks has been state of the art for 20 years </li> <li>If used correctly, no consequential damage is known </li> <li>Is it almost impossible to create an overall system statics when using solar supports </li> <li>If no overall system statics can be presented, systems installed with solar mounting rails do not meet the requirements of the state of the art. </li> <li>Is the installation effort for solar panels much higher and less economical? </li> <li>If there is no contradiction to the guidelines for the roofing trade    </li> </ul> </div> <div id="c42324" class="frame frame-background-light-gray frame-type-text frame-layout-1 frame-space-before-large frame-space-after-large"> <header> <h2 class=""> Conclusion </h2> </header> <p>Based on the above, installers can use the novotegra mounting system for tiled roofs without hesitation if the standard roof pitch is present. Additional measures are required for lower roof pitches. However, this is also the case if a solar system has not even been installed on the roof. Solar roof supports can improve the tightness of the roof if the pitch is below the standard roof pitch, but they also entail other risks. Their use must therefore be thoroughly checked. </p> </div> <div id="c42365" class="frame frame-default frame-type-novotegra_productteaser frame-layout-4"> <div class="row col-12 col-xl-9 justify-content-center"> <div class="col-12 col-xl-3 card-item d-flex align-items-stretch"> <div class="card"> <img class="card-img-top align-self-start img-fluid" alt="" src="/fileadmin/_processed_/c/5/csm_ziegeldach-klemmsystem-top-fix-hochkant_6afeccc55e.jpg"> <div class="card-body"> <p class="h5 card-text">Clamping system top-fix</p> <p class="card-text">Powerful, stable and flexible</p> </div> <div class="card-footer"> <a class="btn btn-primary rounded-pill align-self-end" href="/en/mounting-systems/tile-roof/clamping-system-top-fix"> Show details </a> </div> </div> </div> <div class="col-12 col-xl-3 card-item d-flex align-items-stretch"> <div class="card"> <img class="card-img-top align-self-start img-fluid" alt="" src="/fileadmin/_processed_/5/6/csm_ziegeldach-klemmsystem-side-fix_f3283cb2b2.jpg"> <div class="card-body"> <p class="h5 card-text">Clamping system side-fix</p> <p class="card-text">Quick and easy fixing!</p> </div> <div class="card-footer"> <a class="btn btn-primary rounded-pill align-self-end" href="/en/mounting-systems/tile-roof/clamping-system-side-fix"> Show details </a> </div> </div> </div> <div class="col-12 col-xl-3 card-item d-flex align-items-stretch"> <div class="card"> <img class="card-img-top align-self-start img-fluid" alt="" src="/fileadmin/_processed_/c/3/csm_ziegeldach-einlegesystem-top-fix_77bb4bcf21.jpg"> <div class="card-body"> <p class="h5 card-text">Insertion system top-fix</p> <p class="card-text">Position, insert – finished!</p> </div> <div class="card-footer"> <a class="btn btn-primary rounded-pill align-self-end" href="/en/mounting-systems/tile-roof/insertion-system-top-fix"> Show details </a> </div> </div> </div> <div class="col-12 col-xl-3 card-item d-flex align-items-stretch"> <div class="card"> <img class="card-img-top align-self-start img-fluid" alt="" src="/fileadmin/_processed_/5/0/csm_ziegeldach-einlegesystem-side-fix_b755921053.jpg"> <div class="card-body"> <p class="h5 card-text">Insertion system side-fix</p> <p class="card-text">Powerful, stable and attractive!</p> </div> <div class="card-footer"> <a class="btn btn-primary rounded-pill align-self-end" href="/en/mounting-systems/tile-roof/insertion-system-side-fix"> Show details </a> </div> </div> </div> </div> </div>  </div> </div> <section class="side-buttons-bar contact-section"> <a data-toggle="modal" data-target="#contactModal" class="btn side-buttons-bar--hover-btn contact-hover-btn" href="/en/contact"> Contact </a> </section> <footer class="footer"> <div class="footer-content"> <div class="row footer-content__top-container"> <div class="container"> <div class="row"> <div class="accordion col-12 footer-collapse" id="footer-collapse"> <div class="row"> <div class="col-12 col-md-6 menu-links"><div class="footer-headline collapse-trigger" type="button" data-toggle="collapse" data-target="#footer-collapse--mounting-systems" aria-expanded="true" aria-controls="footer-collapse--mounting-systems">Mounting Systems</div><ul class="collapse show" id="footer-collapse--mounting-systems" aria-labelledby="heading-footer-collapse--mounting-systems"><li><a href="/en/mounting-systems/all-mounting-systems" title="Mounting Systems for every roof: tile roof ✓ trapezoidal sheet metal roof ✓ seamed metal roof ✓ corrugated sandwich roof ✓ flat roof." class="footer-nav--item">All mounting systems</a></li><li><a href="/en/mounting-systems/tile-roof" title="Choose between clamping system and insertion system: top-fix ✓ side-fix ✓ cross-system components for fast & efficient assembly." class="footer-nav--item">Tile roof</a></li><li><a href="/en/mounting-systems/flat-roof" title="Our flexible solution for south & east-west orientation: Wind tunnel tested ✓low ballasting required ✓ safe, stable and quickly installed." class="footer-nav--item">Flat roof</a></li><li><a href="/en/mounting-systems/trapezoidal-metal-roof" title="Our system variants - your choice: clamping system ✓ insertion system ✓ top-fix ✓ side-fix, cross-system components for fast & efficient assembly." class="footer-nav--item">Trapezoidal metal roof</a></li><li><a href="/en/mounting-systems/bitumen-roof" title="Classic meets modern: The brand new roof-parallel direct mounting for bitumen shingles and bitumen membranes on wooden formwork." class="footer-nav--item">Bitumen roof</a></li><li><a href="/en/mounting-systems/corrugated-sandwich-roof" title="The right variant for your project: clamping system ✓ insertion system ✓ cross-system components for fast & efficient assembly." class="footer-nav--item">Corrugated & sandwich roof</a></li><li><a href="/en/mounting-systems/seamed-metal-roof" title="The right system for your project: clamping system ✓ insertion system ✓ cross-system components for fast & efficient assembly from above. 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