SupaClear CAP-X Aluminium Screw Down 50mm Gable Glazing Bar – 3000mm

The SupaClear CAP-X Aluminium Screw Down 50mm Gable Glazing Bar – 3000mm is a durable, professional-quality glazing profile designed to secure and finish the exposed outer edges of polycarbonate roofing sheets. Manufactured from high-quality powder-coated aluminium, this gable glazing bar provides a strong, weather-resistant fixing solution for timber-framed polycarbonate roofs.

Part of the SupaClear Polycarbonate Roofing Sheet range, the CAP-X Gable Glazing Bar is ideal for conservatories, lean-to roofs, carports, pergolas, canopies, verandas and other pitched roofing applications.

Unlike intermediate glazing bars, which join two adjoining polycarbonate sheets, a gable glazing bar is specifically designed for the outer edges of a roof. Its distinctive profile incorporates a 50mm vertical downstand that neatly covers the exposed side of the supporting timber rafter, creating a clean, professional roof-edge finish.

The screw-down aluminium profile features concealed fixings and integrated rubber glazing gaskets to help secure the polycarbonate sheet and provide a weather-resistant seal. A snap-fit cover conceals the fixing screws, leaving an attractive, streamlined appearance.

Supplied in a 3000mm (3m) length and available in White, Brown and Grey, the SupaClear CAP-X Gable Glazing Bar offers a practical and long-lasting solution for finishing polycarbonate roof edges.

This handy pack includes: 1 Glazing Bar, 1 Plastic End Cap, Fixings and Pre-installed Gaskets

Features & Benefits

• 50mm Aluminium Glazing Profile: Strong, durable construction designed to secure the outer edges of polycarbonate roofing sheets.
• 3000mm Length: Supplied in a convenient 3m length for a wide range of roofing installations.
• 50mm Vertical Downstand: Covers the exposed side of the supporting timber rafter for a neat and professional gable-edge finish.
• Powder-Coated Aluminium: Provides excellent resistance to corrosion, weathering and everyday outdoor exposure.
• Concealed Screw-Down Fixings: Central fixing channel and snap-fit cover hide screw heads for an attractive finished appearance.
• Rubber Glazing Gaskets: Help create a weather-resistant seal between the glazing bar and polycarbonate roof sheet.
• Designed for Timber Rafters: Suitable for mechanical fixing directly onto appropriately sized timber roof supports.
• Secure Sheet Retention: Helps hold the outer edge of the polycarbonate sheet firmly in position.
• Low Maintenance: Durable aluminium construction requires minimal upkeep.
• Three Colour Options: Available in White, Brown and Grey to complement different roof designs.
• Part of the SupaClear Range: Complements compatible SupaClear Polycarbonate Roofing Sheets and glazing accessories.

What Is a Gable Glazing Bar?

A gable glazing bar is a specialised roofing profile used to secure and finish the outermost edges of polycarbonate roofing sheets.

Unlike an intermediate glazing bar, which connects two adjacent sheets along a supporting rafter, a gable glazing bar secures a single sheet at the perimeter of the roof.

The SupaClear CAP-X 50mm Gable Glazing Bar incorporates a vertical aluminium downstand that extends over the outside face of the timber rafter, helping to protect the exposed edge and provide a neat, continuous finish.

The profile is secured using a concealed screw-down fixing system, with rubber gaskets providing contact between the aluminium glazing bar and the polycarbonate sheet.

This makes it particularly suitable for the left and right outer edges of timber-framed polycarbonate roofing installations.

Suitable Applications

The SupaClear CAP-X Aluminium Gable Glazing Bar is suitable for a variety of domestic and commercial polycarbonate roofing projects, including:

• Conservatory roofs
• Lean-to roofs and extensions
• Timber-framed carports
• Garden pergolas
• Patio covers and verandas
• Entrance canopies
• Covered walkways
• Garden buildings and shelters
• Other compatible pitched polycarbonate roofing installations

Technical Specifications

How Does the SupaClear CAP-X Gable Glazing Bar Work?

The CAP-X Gable Glazing Bar is designed to secure the outer edge of a polycarbonate roof sheet while providing a neat finish to the supporting timber rafter.

1. Position the Polycarbonate Roofing Sheet

Place the polycarbonate sheet onto the timber roof structure, ensuring it is correctly aligned with the outer supporting rafter and positioned according to the roofing system’s installation requirements.

2. Position the Gable Glazing Bar

Place the aluminium gable glazing bar over the outer edge of the polycarbonate sheet, ensuring the vertical downstand covers the outside face of the timber rafter.

The rubber glazing gasket should sit evenly against the upper surface of the polycarbonate sheet.

3. Secure the Glazing Bar

Fix the glazing bar through its concealed central fixing channel into the supporting timber rafter using suitable screws.

Ensure the glazing bar is securely fastened without overtightening or excessively compressing the glazing gasket.

4. Fit the Concealed Fixing Cover

Once the glazing bar has been secured, install the snap-fit aluminium cover to conceal the screw heads and create a clean, professional finish.

5. Complete the Roof Edge

Fit compatible glazing bar end caps, sheet closures and other necessary roofing accessories to complete the installation.

Always follow the relevant glazing system installation instructions and allow for thermal expansion of the polycarbonate sheets.

Intermediate vs Gable Glazing Bars: What’s the Difference?

Choosing the correct glazing bar is important when installing a polycarbonate roof.

Intermediate Glazing Bar

An intermediate glazing bar is installed between two adjoining polycarbonate roofing sheets. It secures both sheet edges to a supporting timber rafter and creates a sealed joint between the sheets.

Gable Glazing Bar

A gable glazing bar is installed at the outermost edge of the roof. It secures a single polycarbonate sheet and incorporates a vertical downstand that covers the exposed side of the supporting timber rafter.

Wall Glazing Bar

A wall glazing bar is designed for roofing installations where the glazed roof meets an adjoining wall. Its raised vertical upstand allows an appropriate weatherproof junction to be formed.

For a complete installation, the SupaClear CAP-X range offers complementary glazing profiles designed for different positions across a polycarbonate roof.

Why Choose SupaClear Aluminium Gable Glazing Bars?

The SupaClear CAP-X Aluminium Gable Glazing Bar combines strength, durability and an attractive appearance, making it a practical choice for polycarbonate roofing installations.

Its powder-coated aluminium construction provides greater rigidity than many basic plastic glazing trims, while the concealed fixing system creates a cleaner appearance than profiles with exposed screws.

The 50mm vertical downstand helps provide a tidy finish along the roof perimeter, covering the outer face of the supporting timber rafter.

Combined with compatible SupaClear Polycarbonate Roofing Sheets, the CAP-X glazing system offers a coordinated solution for creating professional-looking, long-lasting roofs.

Frequently Asked Questions

What is a 50mm gable glazing bar used for?

A 50mm gable glazing bar is used to secure and finish the exposed outer edge of a polycarbonate roofing sheet. It is typically installed along the left or right perimeter of a pitched polycarbonate roof.

What length is the SupaClear CAP-X Gable Glazing Bar?

This glazing bar is supplied in a 3000mm (3m) length.

Can the CAP-X Gable Glazing Bar be fitted to timber rafters?

Yes. The CAP-X Gable Glazing Bar is designed for screw-down installation onto suitable timber rafters.

Does the gable glazing bar conceal the fixing screws?

Yes. The profile incorporates a concealed fixing channel and cover, allowing the screw heads to be hidden after installation.

What is the purpose of the 50mm downstand?

The 50mm vertical downstand extends over the outside face of the supporting timber rafter, helping create a neat, professional finish at the roof edge.

Is this glazing bar suitable for polycarbonate roof sheets?

Yes. The SupaClear CAP-X Gable Glazing Bar is designed for use with compatible polycarbonate roofing sheets. Always verify sheet thickness compatibility before installation.

What colours are available?

The SupaClear CAP-X Aluminium Gable Glazing Bar is available in White, Brown and Grey.

Can I use a gable glazing bar between two polycarbonate sheets?

No. A gable glazing bar is designed for the outer edge of a roof. To join two adjacent polycarbonate sheets, use a suitable SupaClear CAP-X Intermediate Glazing Bar.

Complete Your Roof with SupaClear Polycarbonate Roofing Accessories

Create a secure and professional polycarbonate roof installation by combining the SupaClear CAP-X Aluminium Screw Down 50mm Gable Glazing Bar – 3000mm with compatible SupaClear Polycarbonate Roofing Sheets, intermediate glazing bars, wall glazing bars, end caps and other roofing accessories.

The SupaClear range offers coordinated roofing products for conservatories, carports, lean-to roofs, canopies and a wide variety of domestic and commercial glazing projects.