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Professional Building Supplies£37.98Visit shop Molan Brown Exitex Pvc Capped Rafter Bar Rafter Supported - 4Mtr
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The PolyX PVC Capped Rafter Bar (RB40-B) is designed for contractors and DIY enthusiasts installing polycarbonate roofing systems who require a robust, weather-resistant mounting solution. The primary benefit of this system is its dual-material construction, which combines the structural rigidity of an aluminium base with the easy-to-install, protective nature of a PVC cap, providing a secure seal for conservatory or canopy roofs. However, users should note that the bar is supplied in a fixed 4-metre length, which may require precise site cutting to fit custom roof dimensions.
| Model Part Number | RB40-B |
|---|---|
| Brand | Storm |
This product is specifically designed for polycarbonate sheets ranging from 10mm to 25mm and is not recommended for use with glass.
Yes, you will need to pre-drill the aluminium base at regular intervals to securely fasten it to your timber rafters.
The PVC cap is manufactured for outdoor durability, though some minor fading may occur over many years of intense UV exposure.
While these bars are 4 metres long, they can be carefully butted together, though we recommend a continuous length to ensure the best weather seal.
Fasteners for attaching the base to the timber are generally sold separately as they depend on the specific material of your roof structure.
A sharp, fine-toothed hacksaw or a mitre saw with a blade suitable for aluminium and PVC is recommended.
Check that the sheets are pushed fully into the base and verify that the base is not warped or obstructed by screw heads.
Ensure that the end caps are properly fitted and that the PVC cover is fully snapped into position along the entire length.
Check that the polycarbonate sheet edge is clean and free from jagged burrs, or apply a light silicone lubricant to the gasket.
To ensure a long service life, verify that your rafters are structurally sound and level before installation. Use stainless steel screws to attach the aluminium base to prevent corrosion. When cutting the 4-metre bars, use a fine-toothed hacksaw or a power saw with a non-ferrous blade to ensure clean edges.
Compatibility covers sheets from 10mm to 25mm; always ensure the gasket is seated correctly during the cap installation to maintain the weather seal. For ongoing care, simply wash the PVC surface with mild soap and water annually to remove dirt and organic debris. Avoid using abrasive scouring pads or harsh solvents, as these can dull the brown finish.
