Learn what EN 356 glass is, how it is tested, what the ratings mean, and where this type of security glazing is commonly used.
EN 356 glass is security glazing that has been tested to measure its resistance to manual attack.
The standard is used to classify how well glass performs when exposed to impact from heavy objects or repeated tool strikes.
EN 356 is commonly associated with anti-bandit glass, anti-vandal glass and laminated security glass.
It helps architects, contractors, security consultants and building owners specify the correct level of protection for a project.
As experienced security glass manufacturers in the UK, Tecdur designs and manufactures Tecdur Secure Glass —
a high-performance laminated glass range engineered to withstand severe levels of manual attack while maintaining clarity and architectural integration.
What Does EN 356 Mean?
EN 356 is a European standard used to test and classify glass resistance to manual attack.
It does not simply describe glass thickness; instead, it measures performance under controlled testing conditions.
This means EN 356 glass is specified based on its tested ability to resist impact and delay penetration.
The higher the classification, the greater the resistance level achieved during testing.
How EN 356 Glass Works
EN 356 glass is usually manufactured using a laminated construction. Multiple layers of glass are bonded together with specialist interlayers that absorb impact energy and hold fragments in place when the glass is damaged.
When struck, the glass may crack, but the laminated structure prevents it from immediately falling away.
This helps stop an opening being quickly created and makes it much harder for an intruder to gain access.
The objective is to delay entry, increase resistance to attack and provide additional protection for people, property and valuable assets.
EN 356 Glass Ratings Explained
EN 356 ratings are divided into two main categories: P1A to P5A and P6B to P8B.
Each group is tested differently and represents a different level of attack resistance.
P1A to P5A: Steel Ball Drop Testing
P1A to P5A classifications are tested using a heavy steel ball dropped onto the glass.
These ratings are generally used where protection is required against impact, vandalism or opportunistic attack.
- P1A – entry-level impact resistance
- P2A – increased resistance to repeated impact
- P3A – moderate impact protection
- P4A – higher resistance to vandalism and impact
- P5A – strong impact resistance before moving into axe-tested classifications
P6B to P8B: Axe Attack Testing
P6B to P8B classifications are tested using repeated axe strikes.
These ratings are used where the glazing must withstand more sustained manual attack before an opening can be created.
- P6B – approximately 30 to 50 axe strikes
- P7B – approximately 51 to 70 axe strikes
- P8B – more than 70 axe strikes
Where Is EN 356 Glass Used?
EN 356 glass is typically specified in buildings where glazing forms part of the first line of defence.
It is commonly used in environments where there is a risk of vandalism, forced entry or deliberate attack.
- High value retail storefronts
- Commercial buildings and offices
- Security doors and glazed screens
- VIP protection environments
- Prisons and police custody suites
- Mental health establishments
- High security facilities
EN 356 vs LPS 1270
EN 356 is an important standard for measuring impact and manual attack resistance.
However, some projects may also require LPS 1270, which was developed by the Loss Prevention Certification Board to simulate more realistic manual attack scenarios.
Tecdur Secure Glass can be specified to EN 356 and LPS 1270, helping project teams choose the most suitable level of security glazing for the risk profile of the building.
Secure Glass can be:
Enhance Security
Impact Resistant
Bullet Resistant
Blast Resistant
Fire Resistant
Acoustic
Why Choose Tecdur?
With over 15 years of industry experience and extensive in-house manufacturing capability, Tecdur provides certified, high-performance security glazing designed to protect people and property.
Our team works closely with architects, contractors and specifiers to ensure the correct EN 356 glass rating is selected for each project.
Whether you need impact-resistant glazing, anti-bandit glass or enhanced security glass for a high-risk environment, Tecdur can help you specify the right tested solution.