Polycarbonate Roofing Accessories

A successful polycarbonate roof is about far more than simply choosing the right sheets. Every roofing system relies on a range of carefully selected accessories that work together to provide strength, weather resistance and a professional finish.

At PolycarbonateX, we've brought together everything you need to complete your installation in one place. From glazing bars and side flashings to sealing tapes, end closures and fixing buttons, every accessory in our range has been selected to work seamlessly with our multiwall polycarbonate roofing sheets.

Whether you're building a new pergola, replacing an existing carport roof or installing a lean-to canopy, using the correct accessories is just as important as selecting the right sheet thickness.

Why Are Polycarbonate Roofing Accessories Important?

One of the biggest misconceptions about polycarbonate roofing is that the sheets alone create the finished roof.

In reality, the accessories are what transform individual sheets into a complete roofing system.

Glazing bars support and secure the sheets, sealing tapes protect the internal flutes, end closures provide a neat finish, and side flashings help prevent water ingress around the perimeter of the roof.

Without these components, even the highest-quality roofing sheets won't perform as they should.

By choosing compatible accessories designed to work together, you'll create a roof that's stronger, more durable and easier to install.

PVC Top Cap & Aluminium Base Glazing Bars

Glazing bars form the backbone of most rafter-supported polycarbonate roofs.

Our PVC Top Cap & Aluminium Base Glazing Bars securely support the roofing sheets while allowing them to expand and contract naturally as temperatures change throughout the year.

Manufactured with a strong aluminium base and a durable PVC snap-fit top cap, they're suitable for a wide range of roofing projects including pergolas, verandas, canopies, lean-to roofs and carports.

Each glazing bar is supplied with an end cap to create a neat, professional finish.

Side Flashings

Side flashings are fitted along the outside edges of the roof where the polycarbonate sheets finish.

Although often overlooked, they play an important role in creating a weather-resistant edge while improving the overall appearance of the installation.

They help direct rainwater away from the roof edge, protect exposed sheet edges and provide a clean transition between the roofing sheets and the surrounding structure.

End Closures

End closures are fitted over the open ends of the polycarbonate sheets once the sealing tapes have been applied.

They protect the tapes from damage, improve the appearance of the roof and help provide a durable finish that will withstand years of outdoor use.

Correctly installed end closures also help keep the sheet ends protected from accidental knocks and general wear.

Sealing Tape Kits

Every multiwall polycarbonate sheet should be sealed before installation.

Our sealing tape kits include both aluminium foil tape and breather tape, providing everything required to prepare the sheet correctly.

The aluminium foil tape is fitted to the upper end of the sheet to create a weatherproof seal, while the breather tape is fitted to the lower end to allow condensation to drain naturally whilst helping prevent dust, insects and debris entering the flutes.

Although these tapes are hidden once the roof has been completed, they play an important role in maintaining the long-term appearance and performance of the roofing system.

Polycarbonate Sheet Fixing Buttons

Where sheets are fixed directly to timber roof structures, fixing buttons provide a secure fixing point whilst allowing the sheet to move naturally as temperatures change.

The wide button head helps distribute pressure more evenly across the sheet, reducing the risk of stress around the fixing hole and creating a neat, professional appearance.

Correct installation using oversized fixing holes is essential to allow for thermal expansion.

Choosing the Right Accessories

One of the questions we're asked most often is:

"Which accessories do I actually need?"

The answer depends on the type of roof you're building, but for most installations you'll require:

• Glazing bars

• Sealing tape kit

• End closures

• Side flashings (where applicable)

• Fixing buttons (for directly fixed sheets)

By choosing components designed to work together, you'll achieve a much neater installation and avoid compatibility issues during fitting.

Compatible With PolycarbonateX Roofing Sheets

Our accessories have been selected for use with:

• 10mm Multiwall Polycarbonate Roofing Sheets

• 16mm Multiwall Polycarbonate Roofing Sheets

• 25mm Multiwall Polycarbonate Roofing Sheets

Simply select the correct accessory to match your chosen sheet thickness for a complete roofing system.

Why Buy Roofing Accessories from PolycarbonateX?

Polycarbonate roofing systems are our speciality.

Rather than offering a collection of unrelated components, we've carefully selected accessories that work together to create complete roofing systems for homeowners, installers and trade professionals.

When you order from PolycarbonateX, you'll benefit from:

• High-quality roofing components.

• Products designed to work together.

• Friendly technical advice before and after your purchase.

• Secure packaging.

• Fast UK delivery.

• Comprehensive installation guides and project support.

Whether you're replacing a single component or building an entirely new roof, we're here to help you choose the right products for your project.

Need Help Planning Your Roof?

If you're unsure which accessories you'll need, our team is always happy to help.

We can advise on compatible glazing bars, sheet thicknesses, fixings and installation accessories, ensuring you order everything required to complete your roof first time.

Our goal is simple: to help you build a strong, weather-resistant polycarbonate roof that will perform reliably for many years to come.