Description
Why choose our extendable scaffold transoms?
When you’re building or maintaining scaffolding structures, flexibility is key. Our extendable transoms stand out by offering quick adjustments without compromising strength. Whether you’re working on a tight urban renovation or a larger industrial setup, these transoms slide effortlessly to match your required span, reducing setup time and minimising the need for multiple fixed-length pieces. Built with precision engineering, they integrate smoothly with standard scaffold tubes and couplers, giving you peace of mind that your platform will hold up under heavy loads. Customers love how these transoms reduce inventory costs while boosting productivity, perfect for contractors who value smart, long-lasting equipment. Please note that the extendable transoms require standard 48.3mm tubes for secure connections. Explore our full selection of new scaffolding tubes in galvanised high-yield steel, available in lengths from 5ft to 21ft for standards, ledgers, and full TG20-compliant structures.
Specifications
| Feature | 4+3 Size (Plain) | 4+3 Size (Wedged) | 5+3 Size (Plain) | 5+3 Size (Wedged) |
| Extended Length | Up to 3.1m | Up to 3.1m | Up to 3.6m | Up to 3.6m |
| Collapsed Length | 1.8m | 1.8m | 2.1m | 2.1m |
| Material | Galvanized Steel | Galvanized Steel | Galvanized Steel | Galvanized Steel |
| Weight | 12.5kg | 13kg | 14.5kg | 15kg |
| Load Capacity | 2.5kN/m² | 2.5kN/m² | 2.5kN/m² | 2.5kN/m² |
| Tube Diameter | 48.3mm | 48.3mm | 48.3mm | 48.3mm |
| Finish | Hot-Dip Galvanized | Hot-Dip Galvanized | Hot-Dip Galvanized | Hot-Dip Galvanized |
| Compatibility | BS EN 74 Couplers | BS EN 74 Couplers | BS EN 74 Couplers | BS EN 74 Couplers |
Typical applications
Extendable scaffold transoms shine in scenarios where adaptability matters most. They’re commonly used in building facades for painting or repairs, where bay widths vary around windows or corners. In industrial settings, like warehouse maintenance or bridge inspections, the 5+3 size handles wider spans effortlessly. For residential projects, such as roofing or extensions, the 4+3 variant offers compact storage and quick setup. Event staging teams appreciate their lightweight design for temporary platforms, while demolition crews rely on their strength to support debris loads. No matter the job, these transoms help create safe, customisable scaffolds that adapt to your site’s unique challenges. Why not combine these extendable transoms with our BS 2482-compliant, 225mm-wide, durable European whitewood scaffold boards to create fully adjustable, custom platforms across variable bay widths?
Safety and compliance
Safety is non-negotiable in scaffolding, and our extendable transoms are engineered to exceed industry standards. They comply with BS EN 12811-1 for temporary works equipment and BS EN 1004 for mobile access towers, ensuring structural integrity under load. Each unit features anti-slip surfaces and secure locking mechanisms to prevent accidental extension or collapse. We recommend regular inspections for wear and always pair them with guardrails and toeboards for full compliance with EU safety guidelines.
Maintenance is straightforward: simply clean with mild soap and store in a dry area to prolong lifespan. If you’re unsure about compatibility with your existing setup, our team can provide custom advice based on your project needs.
Frequently asked questions (FAQs)
What makes extendable transoms better than fixed ones?
They offer adjustable lengths, saving you from buying multiple sizes and speeding up assembly on variable-width bays.
How do I choose between plain and wedged types?
Plain is great for standard flat connections, while wedged provides a tighter fit on angled or irregular scaffolds for added stability.
Are these transoms compatible with other brands?
Yes, they’re designed to work with any system that uses 48.3mm tubes and BS EN 74 couplers, such as Kwikstage or Cuplok.
What's the maximum load they can handle?
Up to 2.5kN/m² when properly installed, suitable for workers, tools, and light materials.
How do I extend and lock them securely?
Simply pull the inner tube to the desired length and engage the built-in pin lock—it’s tool-free and takes seconds.
What's the difference between 4+3 and 5+3 sizes?
The 4+3 extends to 3.1m for medium bays, while the 5+3 reaches 3.6m for wider applications, such as commercial sites.
How should I store these transoms?
Stack them horizontally in a covered area to avoid bending, and inspect for damage before each use.
Are there any assembly tools required?
No special tools, just standard scaffold hammers for couplers. We include instructions with every purchase.
What if I need custom lengths?
Only the listed standard sizes are available; we do not offer custom lengths.
How do they contribute to site safety?
By reducing gaps in platforms and ensuring even weight distribution, they minimise trip hazards and structural failures.





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