SILATEC Encyclopedia

P4A glass or P6B glass?

We will be happy to explain the somewhat confusing terminology of DIN EN 356. There are 5 low security classes (orange and light blue) and 3 high (dark blue). Only those marked in dark blue offer effective burglary protection. 


SECURITYSILATEC SAFETY GLASSBURGLARY RESISTANCEP1A P2A P3A P4A P5A P6B P7B P8B P6B P7B P8B IMPACT RESISTANCE

 

 

 

The 5 low classifications P1A glass to P5A glass prevent the glass pane being smashed in, e.g. with a stone. It does not offer traditional burglary protection. For that reason it is also called only "impact-resistant glazing"

The 3 high resistance classes P6B glass to P8B glass offer burglary protection and are accordingly called burglar-resistant glass, P8B glass offering the highest level of burglary protection.

The security difference between impact-resistant glass (P1A to P5A glass) and burglar-resistant glass (P6B, P7B, P8B glass) is extreme. The biggest difference is between P5A glass and P6B glass and can be compared to apples and pears - namely not at all.

As the testing methods are very different: with impact-resistant glass (P1A to P5A glass), a heavy steel ball of around 4 kg is dropped several times on the glass from various heights. By contrast, burglar-resistant glass (P6B, P7B, P8B glass) is dealt with significantly more harshly: using an axe.

Important:

In practice P4A glass and P5A glass is often offered as burglar-resistant glass. This is not correct, as burglar-resistant glass is P6B glass. Or P7B. Of these, P8B glass offers the greatest burglary protection.

The classifications EH1, EH2, EH3 (VdS damage prevention) are even more burglar-resistant.

Of course SILATEC safety glass also meets the requirements for the highest resistance classes - and more. We are happy to help you make the right choice.