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Glazing Bars

Glazing bars are an essential part of any glass or polycarbonate roofing system, whether it be on a large conservatory or small pergola. These glazing bars provide you with a clean finish and help... Read More
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best seller Alukap-XR - Aluminium Valley Bar - White

Alukap-XR - Aluminium Valley Bar - White

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Price From: £75.19INC VAT RRP: £94.00 View
best seller Snapa - Polycarbonate H Section

Snapa - Polycarbonate H Section

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best seller Alukap-SS - Low Profile Bar - White

Alukap-SS - Low Profile Bar - White

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best seller Alukap-SS - High Span Bar - Brown

Alukap-SS - High Span Bar - Brown

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best seller Alukap-XR - 45mm Aluminium Glazing Bar with End Cap - White

Alukap-XR - 45mm Aluminium Glazing Bar with End Cap - White

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best seller Alukap-SS - Low Profile Wall Bar - White

Alukap-SS - Low Profile Wall Bar - White

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best seller Alukap-XR - 60mm Aluminium Gable Bar with End Cap - Brown

Alukap-XR - 60mm Aluminium Gable Bar with End Cap - Brown

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best seller Alukap-SS - High Span Wall Bar - Brown

Alukap-SS - High Span Wall Bar - Brown

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best seller Alukap-XR - Aluminium Ridge - White

Alukap-XR - Aluminium Ridge - White

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best seller Alukap-SS - Complete Post & Bracket Kit - White (3000mm)

Alukap-SS - Complete Post & Bracket Kit - White (3000mm)

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best seller Alukap-SS - Low Profile Cap - Brown

Alukap-SS - Low Profile Cap - Brown

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best seller Alukap-XR - End Stop Bar - White

Alukap-XR - End Stop Bar - White

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Common Questions

Buying roofing materials can be daunting, especially when ordering them online. With over 40 years of experience in roofing, however, we get asked a lot of questions about our growing range of polycarbonate glazing bars. Here are some of the most common questions with answers for each!

Which Material is Best – Plastic or Aluminium Glazing Bars? 

Roofing Megastore supplier both plastic and aluminium glazing bars. Whilst both do the same job, they have been designed and manufactured for particular project types. Therefore, when ordering glazing bars you should ensure you choose those that are purposely crafted for your project.

Plastic glazing bars are manufactured from high-quality PVC, which is ideal for multiwall polycarbonate. These glazing bars require a timber frame are only suitable for low-mid span polycarbonate roofing projects. Due to the weight of solid polycarbonate and glass panels, plastic glazing bars should not be used on such projects.

Aluminium glazing bars are ideal for solid polycarbonate and glass panels, but can also be used with multiwall polycarbonate if desired. Due to their aluminium build, they can also be used on high-span roofing projects. Whilst standard aluminium glazing bars require a timber frame, self-supporting glazing bars can withstand the weight of your panels without additional structural support.

Why Do I Need Polycarbonate Glazing Bars?

Glazing bars are an essential part of any conservatory, pergola or greenhouse roof. They ensure your roofing sheets are secured in place and will not be lifted by strong wind. Through the use of rubber gaskets, they are prevent water ingress below your polycarbonate or glass panels. 

Whilst some will fix polycarbonate roofing sheets onto a timber structure without glazing bars, this will likely reduce the lifespan of those sheets. This is as water can enter the sheets more easily and the fixings will struggle to hold your sheets in place.

What is Used to Connect Multiple Sheets?

When connecting multiple polycarbonate or glass panels along the length, you will use a glazing bar. These feature a base plate and top bar, which hold your roofing sheets snuggly in place. If you are connecting sheets along the width, you will use a H section.

Will an End Cap Be Included with Your Glazing Bar?

A single end cap is provided with each glazing bar. This end cap is used on the exposed end to stop water or wind from entering your glazing bar. Should you wish to seal both ends of your glazing bar or intend to cut them on site, you can buy additional end caps too.

Are Polycarbonate Glazing Bars Available in Other Colours?

The majority of our plastic glazing bars are only available in either white or brown. Our aluminium range, however, can be coloured to match that of a provided RAL colour. As an additional cost may apply and the estimated delivery date may vary, we recommend that you contact our team online or by telephone.

Have More Questions? 

If you have more questions about our glazing bars, speak to our team online or by telephone. With over 40 years of experience in roofing, we’ll help answer your questions and will ensure you have everything you’ll need to complete your roofing project.

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