SPRING SAVINGS 10% off your glazing bars when you buy your polycarbonate from us! Use BAR10 at checkout.

PVC Capped Rafter Bar 25mm, 32mm & 35mm - White & Brown

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The 25mm, 32mm and 35mm PVC Capped Rafter Bar is available in White or Brown. This sturdy, lightweight snap down bar has a strong aluminium base and a PVC top cap. The bar comes complete with EPDM gaskets for a leak proof seal. This easy to fit rafter supported Glazing Bar suits 25mm, 32mm and 35mm Multiwall Polycarbonate Sheets. 

To make an end bar simply clip in the Universal edge trim to balance up the outside of the bar and neatly cloak off the ends of your roof.

Each bar comes complete with one push fit end cap. Additional end caps can be purchased seperately if you need them.  

This bar is not suitable for use with glass. Follow this link for rafter bars for glass roofs.   

July Savings!! - Buy your polycarbonate from us and enjoy a 10% discount off your glazing bars throughout the month of July - apply the code BAR10 to your basket.

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Availability: In stock


PVC capped rafter bars are also known as ‘snap down’, ‘snap tight’ or ‘knock down’ bars due to the way they are installed. Before installing thread the gaskets into the groove on either side of the aluminium base section. If the gasket arrives in one piece simply tear this down the middle to separate it into the two gaskets. Screw the strong aluminium base bar down into your rafters between the upstands. We recommend that they are screwed every 300 - 400mm and around 75mm from the ends. Your polycarbonate sheets are then laid on top of the gaskets in the base bar separated by the bar upstands. The upstand has dedicated locking points for the sheet thicknesses so when the PVC caps are knocked down the prongs on the caps lock into these points for a secure fix. As well as the two base gaskets, the PVC top cap has co-extruded gaskets on both edges to give your roof a watertight seal. Finally the bar end cap is pushed into the end of the bar. 

The bar is easily adapted from an intermediate or joining bar into an end bar by adding a Universal Edge Trim (PVC F section). Simply leave out the gasket from the outside of the aluminium base of the bar and click the prongs of the universal edge trim in its place. This will fill the empty oustide of the bar, balancing it up and neatly cloaking off the edge of your roof.


These PVC capped rafter bars are are a very cost effective solution for multi--wall polycarbonate roofs. Ideal for Lean Tos, canopies and carports and for conservatory roofs, Please note that if you are using glass in your roof this bar is not suitable. Our aluminium capped rafter bars  are designed for use with glass.


These rafter bars are available in white or brown and there is a wide range of lengths to choose from.

Sunwood Range

The Glazing Shop's full range of Sunwood Timber glazing products offer a complete set of parts for anyone building a timber conservatory roof.

The superior ‘Sunwood’ branded system offers a choice of powder coated aluminium and PVCu component parts to suit your design or specification. Available in white and brown finishes.

We also offer a selection of timber ridges, hip bars, and a range of crestings and finials in aluminum. Supported by a full range of trims and accessories, the ‘Sunwood’ system provides a professional finish to your roof every time.