When a window or screen has to stop a bullet, a thrown brick or a determined crowd, the material that does the job is polycarbonate. After years of supplying ballistic and security glazing, I can tell you that the difference between a glazing system that saves lives and one that fails under stress is not magic – it is correct material, correct thickness and correct installation. This guide explains where bullet-resistant and anti-riot polycarbonate is used, how it compares with glass, and the mistakes to avoid when buying it.
Thank you for reading this post, don't forget to subscribe!Where security polycarbonate is used
Polycarbonate is the workhorse of modern security glazing across four recurring applications:
- Bank counters, teller screens and cash-handling areas, where staff must stay protected while talking to customers face to face
- Government buildings, embassies, police stations and control rooms, where glazing has to resist both forced entry and ballistic attack
- Armoured vehicle windows and anti-riot shields, where weight matters as much as protection because the panel moves with a person or a vehicle
- Prisons, courts and public transport screens, where the glazing resists impact and tampering over years of hard use
Polycarbonate versus glass for security glazing
Every serious security spec starts with a comparison, and the honest conclusion is that polycarbonate and glass do different jobs:
- Impact and ballistic performance – polycarbonate absorbs and contains impact energy instead of shattering; a single thick PC sheet can stop threats that crack laminated glass, and it does not throw razor fragments when it fails
- Weight – for the same protection, polycarbonate is dramatically lighter than ballistic glass, which is why vehicles and hand-held shields use it almost exclusively
- Flexibility – PC can be cut, drilled, radius-corned and mounted in lighter frames, simplifying both manufacture and site installation
- Optical clarity – a properly made PC panel stays clear and free of haze for years, so security glazing does not have to look industrial to perform
Glass in security glazing is normally used as laminated armour inside a composite; polycarbonate is the impact-absorbing core that keeps the whole assembly in one piece. For pure impact and blast containment, PC is the material that takes the hit.
The problems in today’s market
The failures I investigate in security glazing almost always trace back to a few avoidable causes. The first is buying generic sheet labelled as ‘bullet-resistant’ with no documented rating and no test backing – protection cannot be guessed, it has to be proven. The second is undersized thickness: a panel that stops a pistol round may fail completely against a higher threat, because the rated level dictates the thickness, not the reverse. The third is poor UV stabilisation, which turns an outdoor or sunlit security panel yellow and brittle over time. And the fourth is installation – a perfect panel mounted with gaps, wrong fasteners or no anti-vandal framing loses its integrity. None of these is about the material; all of them are about the specification and the supplier.
Our advantage and solution
We manufacture polycarbonate sheet purpose-built for security glazing, and we treat every order as an engineering problem. Tell us the threat level you are designing against, the panel size and the mounting situation, and we will recommend the correct thickness and construction – from single thick panels for anti-riot screens to multi-layer ballistic assemblies where required – and supply them cut to size with polished edges and drilled holes, flat-packed so they arrive true. We supply UV-stabilised grades so outdoor security glazing stays clear and strong, and we document the grade and construction behind every quotation. If you are unsure of the rating you need, send us the application and we will help you translate the threat into a specification.
For security integrators, glazing contractors and facility managers, send your panel sizes and threat requirements to oversales@rpplexiglass.com for a quotation.
Frequently Asked Questions
What thickness of polycarbonate is bullet-resistant?
There is no single thickness that is “bullet-resistant” – the correct thickness is set by the threat level you are designing against and is confirmed by documented testing. Higher-threat installations use thicker panels or multi-layer assemblies. Send us the threat rating you need and we will recommend the specification.
Can ballistic polycarbonate be cut and drilled to size?
Yes. Panels are supplied cut to size with polished or deburred edges and pre-drilled holes. Correct edge finishing and mounting are essential – stress raisers from rough cuts weaken a security panel, so fabrication should be done by the manufacturer, not on site.
Does security polycarbonate yellow or degrade outdoors?
Standard sheet can yellow and embrittle over time in sunlight. For exterior security glazing we supply UV-stabilised grades that keep their clarity and impact strength for years of exposure.