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Polycarbonate Roof FAQs Help and Advice

Polycarbonate Roof FAQs

Posted on 22 June, 2021

Polycarbonate roofing is a versatile means of protecting and sheltering the likes of conservatories, greenhouses and porches and more. Strong yet lightweight, this robust material is an excellent alternative to glass roofing – but what do you need to know about polycarbonate roofing? 

The BC Profiles team have put together a list of quick-fire polycarbonate roof FAQs to answer all of your burning questions. 

Axiome polycarbonate installation

An incredibly popular product, Axiome polycarbonate roofing is pre-prepared for installation and use, but you must read up on just how to fit them before starting your project. You can do so by browsing the Axiome installation guide.  

Removing polycarbonate glazing bars

Whether you need to replace a slipped or broken panel or undertake some cleaning and maintenance, on occasion you’ll need to remove a polycarbonate glazing bar. Here’s how: 

  • Remove the rubber gaskets
  • Remove glazing bar end caps
  • Lift the glazing bar cap
  • Slife the polycarbonate roof panel out

What is the biggest piece of polycarbonate you can buy?

Some companies will supply oversized polycarbonate sheets measuring at 6050mm x 2050mm, but generally speaking, you’ll find that the largest sheets available from most retailers is 6105mm x 1000mm. 

How to join polycarbonate sheets

You’re able to join together two polycarbonate roof sheets with the aid of glazing bars from the likes of Snapa

How to cut polycarbonate roofing

Given its shape, polycarbonate sheets are simple to cut, but thanks to the robustness of the material you will need some help from tools. A circular saw is the best tool for cutting polycarbonate roofing, though you can also use a jigsaw.

Is 16mm clear polycarbonate see-through?

16mm polycarbonate sheets have the same clarity and transparency as glass with the added benefits of being half the weight and high impact resistance. 

Bending polycarbonate roofing sheets

A pliable material, polycarbonate roofing sheets are ideal for use on curved roofs at a fraction of the cost of glass. To bend polycarbonate sheets, you’re able to use a heat gun to manipulate the material, though you should always measure angles carefully. 

Does polycarbonate roofing block heat and UV? 

Polycarbonate roofing is resistant to heat and designed to reduce UV radiation. In summer, polycarbonate roof sheets can reduce the sun’s heat by up to 69%. 

How long do polycarbonate roof panels last?

So long as polycarbonate roofing has been installed properly and is sufficiently maintained, you can expect these hard-wearing sheets to last up to 20 years.

Can you walk on polycarbonate roofing?

Polycarbonate roof sheets are not designed to support the weight of a person and so you should avoid walking on them. If you do need to access the roof sheets, use crawl boards between the rafters or step ladders as a safe means of doing so. 

Can I use silicone on polycarbonate?

Concerning polycarbonate roofing, you should only use a 100% silicone sealant that has been specifically formulated to properly bond with the polycarbonate’s coating.

How do you seal the ends of polycarbonate sheets?

You’re able to seal the ends of polycarbonate roof sheets by using end caps. 

Can you screw into polycarbonate?

You can screw into polycarbonate sheets; woodworking drill bits are recommended for this. Drill patiently and steadily for a smooth entry and also use an unwanted piece of wood or acrylic as a backstop underneath the polycarbonate to ensure you do not blowout and crack the panel. 

Does polycarbonate roofing provide shade?

Generally speaking, all polycarbonate roofing reduces the effects of the sun and provides shade. However, certain colours and tints will offer more shade; for example, the likes of clear polycarbonate is designed to provide superior light transmission, making it ideal for the likes of greenhouses. 

Is polycarbonate roofing energy efficient?

Polycarbonate roof sheets are an excellent insulator and also great at reducing noise too; with quality light and solar transmission and high thermal retention, they’re incredibly energy efficient. 


If you’re searching for more information on polycarbonate sheets such as Axiome and Axgard, browse our guide on the benefits of plastic glazing on the BC Profiles help and advice page.


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