Why Use Self Supporting Glazing Bars


Roofing projects demand both aesthetic appeal and structural integrity. One innovative solution that meets these requirements is the use of self supporting glazing bars.

These bars offer many benefits, from easy installation to long-term durability, making them an increasingly popular choice in modern roofing.

But what exactly makes these bars a game-changer in the world of roofing? Let’s explore the six key reasons.

Overview of Self Supporting Glazing Bars

Traditionally, roofing projects relied heavily on timber rafters for support, but these glazing bars eliminate that need, simplifying the installation process and offering a range of benefits.

  • Simplification: They remove the need for timber rafters, making the installation process more straightforward. Incorporating timber rafters requires careful measurement, cutting, and fitting, often demands a higher level of skill and precision. This not only extends the time required to complete the roofing project, but also increases the complexity and potential for errors. With self-supporting glazing bars, however, this cumbersome process is bypassed. These bars are designed to support themselves and the roofing material directly, without the intermediary structural support that timber rafters provide. As a result, the installation becomes a more manageable task, significantly reducing the time and effort involved in constructing a roof.
  • Cost-Effectiveness: Initially, they might seem more expensive than average glazing bars, but when considering the overall project cost, including timber and labor, they prove to be more economical.

For those considering a roofing project, exploring our variety of glazing bars which can be used with our polycarbonate sheets.

🔆 Key Takeaway: Self supporting glazing bars not only simplify the roofing process but also prove to be a cost-effective solution in the long run.

Enhanced Durability

Aluminium self supporting glazing bars are designed for longevity, making them a wise investment for any roofing project.

  • Material Strength: Aluminium's robust nature significantly extends the lifespan of these glazing bars. Unlike other materials traditionally used in roofing, aluminium stands out for its exceptional strength-to-weight ratio, making it both lightweight and incredibly strong. This inherent strength is critical in resisting environmental stressors like wind, rain, and snow, which can cause wear and tear over time. Additionally, aluminum's resistance to corrosion and rust further enhances its longevity, ensuring that the glazing bars maintain their structural integrity and aesthetic appeal for many years.
  • Life Expectancy: These bars have an impressive life expectancy of over 30 years, providing peace of mind regarding durability.

When choosing materials for a roof, the durability of components is paramount. Shop our range of Polycarbonate Roofing Sheets for durable options that complement these glazing bars.

🔆 Key Takeaway: Opting for aluminium self supporting glazing bars translates into a roofing solution that’s not just strong, but also lasting, ensuring a worthwhile investment.

Installation Efficiency

The ease and speed of installing self supporting glazing bars are unmatched, offering efficiency that benefits both professionals and DIY enthusiasts.

  • Simplicity: Their design allows for straightforward, step-by-step installation. The clever design eliminates the guesswork and extensive planning typically associated with the installation of conventional roofing systems. Installers, whether they are seasoned professionals or DIY enthusiasts, can appreciate the ease with which each bar can be aligned and secured. This streamlined process not only saves valuable time but also minimises the potential for installation errors, another common challenge with more complicated roofing systems.
  • Time-Saving: The installation process is quick, reducing labor time and speeding up the completion of roofing projects.

For a detailed understanding of the installation process, contact our expert team.

🔆 Key Takeaway: The installation of self supporting glazing bars is not only user-friendly but also significantly faster, ensuring your roofing project progresses smoothly and efficiently.

Versatility with Different Materials

Self supporting glazing bars offer remarkable versatility, compatible with a wide range of materials.

  • Compatibility: They work seamlessly with both glass and various types of polycarbonate sheets.Whether it's the classic elegance of glass or the practicality and resilience of polycarbonate, these glazing bars are adept at providing secure and stable support. For glass installations, their robustness is particularly crucial due to glass's greater weight and fragility compared to polycarbonate. On the other hand, the diverse characteristics of polycarbonate sheets, from twinwall to solid formats, require a support system that can adapt to different thicknesses and structural dynamics. The ability of these glazing bars to accommodate such a variety of glazing options means that they are not just a one-size-fits-all solution but a versatile tool adaptable to a range of design scenarios.
  • Support for Heavier Glazing: Their robust design is capable of supporting heavier glazing options like glass, which is critical given the weight difference compared to polycarbonate.

🔆 Key Takeaway: The ability of self supporting glazing bars to work with different materials adds a layer of versatility to your roofing project, accommodating a range of design preferences and structural requirements.

Long-Term Cost Effectiveness

While the initial investment in self supporting glazing bars might seem high, their long-term cost-effectiveness is a significant advantage.

  • Longevity vs. Cost: The extended lifespan of these bars means they are more cost-effective over time, despite the higher upfront cost.
  • Reduced Need for Timber: Eliminating the need for timber rafters not only cuts down on material costs but also on maintenance expenses. In traditional roofing methods, timber rafters constitute a substantial portion of the material costs. They require not only the initial investment in the wood itself but also additional expenses related to cutting, fitting, and treating the timber to make it suitable for roofing purposes. Furthermore, timber, as a natural material, is prone to a variety of issues over time, such as rot, insect infestation, and warping due to moisture and temperature changes. This necessitates ongoing maintenance, repairs, and eventually replacements, all of which add to the total cost of ownership of a timber-based roofing system. In contrast, self-supporting glazing bars, typically made from materials like aluminum, are inherently resistant to these issues. They do not require the same level of maintenance as timber, significantly reducing long-term costs. This aspect is particularly beneficial for projects where long-term sustainability and cost-effectiveness are priorities.

For those planning a roofing project, considering the long-term financial benefits is crucial. Consider also the range of applications, including for Polycarbonate Greenhouses.

🔆 Key Takeaway: The long-term financial benefits of self supporting glazing bars, including reduced maintenance and replacement costs, make them a financially savvy choice for roofing projects.

Impressive Spanning Capability

One of the most remarkable features of self supporting glazing bars is their ability to span considerable distances without the need for rafter support.

  • Extended Spanning Lengths: They can span up to nearly 6 meters, a feature not common in traditional bars.
  • Design Flexibility: This spanning capability offers more design freedom and efficiency in roofing construction.

To understand the full potential of these spans in your roofing design, consider consulting with specialists through our contact page.

🔆 Key Takeaway: The extended spanning capability of self supporting glazing bars opens up new possibilities in roofing design and construction, allowing for more creative and efficient architectural solutions.

Bonus: Convenience of One-Stop Shopping

Purchasing self supporting glazing bars offers the convenience of sourcing all necessary materials from one place, reducing the hassle associated with organizing multiple suppliers. We can help with this by supplying all the materials that you need, with expert support 5 days a week.

  • Simplified Procurement: All components, including bars and fittings, can be purchased from a single supplier - Trade Warehouse!
  • Expert Advice: Access to professional advice ensures that all components are compatible and suit your specific project needs.

🔆 Key Takeaway: The convenience of purchasing all roofing components from one supplier simplifies the process and ensures compatibility, saving time and reducing the potential for errors.


Self supporting glazing bars are revolutionizing roofing projects by offering durability, installation ease, versatility, cost-effectiveness, impressive spanning capabilities, and the convenience of one-stop shopping.

These features not only streamline the roofing process but also ensure a high-quality, long-lasting outcome. As you plan your next roofing project, consider the numerous advantages of these innovative bars.

Remember, for more information or to explore a wide range of roofing materials, don't hesitate to contact us. Let us help you make your roofing project a resounding success.

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