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Window Film Certification and Testing

Reputable manufacturers of window film products extensively test their products to ascertain individual performance and ensure continued durability.

Both Solar and Safety properties are independently tested and certified. Solar properties can be found on any product specification sheet. Safety certification is also given, with the level of performance.


ARC Window Films use safety products tested according to the following safety standards;

  • European Standard- EN12600 – Safety – Resistance against impact 
  • European Standard – EN356 – Security – Resistance against manual attack
  • International Standard – ISO16933 – Blast – Resistance against explosion


The level of window film certification achieved will depend on the product type and construction.

The level of window film certification required for your installation will depend on what level of safety/ security you wish to achieve.



BS EN 12600 has now superseded BS 6206 as a European wide performance standard for the impact safety of glazing.

Sometimes referred to as “the pendulum test”, it incorporates the swinging of a weight from three heights into a standard sized pane of glass. The point at which the glass breaks forms part of its classification. The test defines the level at which glass will “break safely”.
The classifications within BS EN 12600 (in order of highest performance) are:

  • Class 1B1 – Achieved by 175+ Micron Safety Films
  • Class 2B2 – Achieved by 100+ Micron Safety Films
  • Class 3B3

(Type B breakage is characterised by the fragments being held together, this is the typical breakage mode for glass with a safety film applied. Toughened glass only achieves type C breakage – whereby the glass breaks but the fragments are not held together.)
Note: In order for filmed glazing to comply fully with BS EN12600 the upgraded glazing system must carry an identifiable mark showing the level of safety achieved.



EN356 is the European performance standard for resistance against manual attack. It shows a glazing system’s resistance against thrown objects or attempted burglary.

It is sometimes known as “the steel ball test” as it incorporates the dropping of a weight from various heights onto a standard sized pane of glass. The main difference between EN356 and EN12600 is that during the EN356 testing the attacks are repeated.

The test is designed to simulate a repeated attack from a determined intruder.

The relevant classifications within EN356 are as follows:

  • P1A – Achieved by 200+ Micron Safety Films
  • P2A – Achieved by 300+ Micron Safety Films
  • P3A – Achieved by 375+ Micron Safety Films



ISO 16933 is the International Standard for resistance against explosions. It shows a glazing systems resistance against bomb blasts and such attacks.

The test involves setting of a controlled explosion close to a purpose built structure which houses the filmed glazing.

In order to reach ISO 16933 certification three passes must be achieved. This is much more stringent than lesser certification such as GSA.

A Class EXV 33 pass can be achieved using an attachment system in addition to Safety and Security Window Film.

ISO16933 is the highest certification achievable from a window film product.


The level and type of certification required will depend on the type and level of risk you wish to protect against. Speak to one of our advisors on 0333 800 2400 to discuss which of our products meet your requirements.

We’re perfectly placed to help, whatever your requirement. Take a look at our extensive range of products and services, or gain more insight into our solutions by reading our case studies and articles.

ARC Window Films

Whether you require a quotation, samples, or simply advice, fill in the form to the right and a member of our team will contact you as soon as possible.

If your enquiry is urgent, we recommend you call straight away. Our offices are open weekdays from 9am - 5pm. Our experienced staff will be delighted to assist you.

Contact Info

Head Office

Unit 1, ARC Business Park, Sankey Valley Industrial Estate, Newton-le-Willows, WA12 8AT

Manchester Office

83 Ducie Street, Manchester, M1 2JQ

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