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When it comes to installing solar panels, not all roofs are created equal. Some roofing materials, like ceramic tiles and Onduline, pose significant challenges that can complicate the installation process. This article explores the issues associated with these complex roof types and offers potential solutions for a successful installation.

The Challenges of Ceramic Tile Roofs

Ceramic tile roofs, while aesthetically pleasing and durable, are among the most challenging surfaces for solar panel installation. The difficulties arise from the need for special mounting brackets, lifting entire rows of tiles, and cutting tiles to fit brackets. These steps require meticulous care and precision to avoid damaging the tiles, which can lead to costly repairs and replacements. However, there are instances where installation is unavoidable, especially when it involves family, friends, or dedicated subscribers.

The Difficulties with Onduline Roofs

Onduline, a bitumen-based corrugated roofing material, is another problematic surface for solar panel installation. While rumors persist about a sturdy and reliable version of Onduline capable of supporting solar panels, such material remains elusive. The issues with Onduline include:

  1. Limited Mobility:
    Onduline becomes soft and compressible in warm weather and brittle and prone to cracking in cold weather. This makes it difficult to move across the roof without causing damage.

  2. Insecure Anchor Points:
    Securing safety equipment is challenging, as attaching anchors through the ridge can crush the material. Even with additional support, the material can still depress and compromise the anchor’s effectiveness.

  3. Inadequate Sealing:
    Properly securing bolts with sealing washers is nearly impossible due to Onduline’s flexibility. Over time, the material can shift or deform, causing the bolts to lose their grip and potentially leading to leaks.

Due to these challenges, installing solar panels on Onduline is often impractical and risky, with a high likelihood of roof leaks.

Alternatives and Solutions

For those with Onduline roofs, consider the following alternatives:

  1. Utilize Other Structures:
    Look for other structures in your yard that could support solar panels, such as garages, canopies, terraces, enclosures, or saunas. Ensure these areas receive adequate sunlight and are not covered with Onduline.

  2. Replace the Roofing Material:
    In many cases, replacing the roofing material is a wise decision. Onduline’s limited lifespan means it will eventually need to be replaced. Swapping it for a more suitable material, such as metal roofing, can simplify the installation process. The good news is that Onduline is often installed over a counter-batten and batten system, making the switch to a metal roof relatively straightforward.

Conclusion

Installing solar panels on complex roof types like ceramic tiles and Onduline requires careful consideration and planning. While these materials present unique challenges, viable solutions exist, such as utilizing alternative structures or replacing the roofing material. By choosing the right approach, you can ensure a safe and effective solar panel installation, maximizing the benefits of solar energy for your home.