Attack Resistant Glazing Specifications

Architectural Armour offer Physical Attack Resistant Glazing products to meet a number of Glazing Standards. The most common standards are detailed below;

EN 356 is a European Standard for glazing to withstand an intruder attack, it has two resistance levels, the lower levels, P1A – P5A, also use the drop test but the higher resistance levels test using a hydraulically driven hammer and axe head, to replicate an actual attack. The higher resistance levels are P6B, P7B and P8B which require the samples to withstand 30/50, 51,70 or 71+ sledge hammer and axe blows respectively, before a 400mm square aperture is created.

LPS 1270 was developed by LPCB to certify glass products to be compatible with LPS 1175. LPS1270 differs from EN356 in that the test is carried out by a person able to vary his choice of tools and method of attack, within the duration of the test. LPCB believe this better represents an actual attack rather than the robotic method used in EN356. The result is to provide a range of tested categories, dependent on the tools allowed and the duration of the test, the higher categories’ of which exceed those of EN356.

LPS 1270 & 1175 Tool Categories

LPS 1270 and LPS 1175, which are the requirements and testing procedures for the LPCB approval and listings of intruder resistant security glazing units and building components, strongpoints, security enclosures and barriers respectively, use the same tool categories and attack durations to determine the attack resistance of the products. Architectural Armour Ltd can supply all of the above glass options into a wide variety of glazed security products, should you need further information or would like to discuss your requirements please email or call +44(0)1981 257000.