Home Technology Perimeter protection specialist Zaun develops ‘world-first’ 20-minute security fence

Perimeter protection specialist Zaun develops ‘world-first’ 20-minute security fence

by Brian Sims

A key customer requirement has driven a steel mesh fencing manufacturer to a probable world-beating performance in security tests. A development fencing system based on Zaun’s CorruSec has resisted serious attempts at forced entry for over 20 minutes with tools including reciprocating saws and angle grinders in independent tests conducted by Building Research Establishment (BRE) assessors.

“We believe this may be a world record for a fencing system,” said Zaun’s founder and director Alastair Henman on returning from the test.

Independent testers from the BRE mounted a sustained attack on the development fence, loosely based on an SR5 ‘serious attempt at forced entry’. They used top-end battery-powered cutting tools including a 750W reciprocating saw with specialist blades used by Fire and Rescue teams and 18V circular saws, jigsaws and disk grinders, axes (including an 850 mm felling axe), a hooligan bar, a 1.5 kg lump hammer and 500 mm-long bolt cutters.

The testers were trying to create a ‘man-sized’ 600 mm square hole in the fence line. That’s larger than the 450 mm x 225 mm hole that’s part of the SR5 test.

Henman added: “Even with this astonishing arsenal, the testers took more than 20 minutes to create this larger breach. The fence, which uses a clever combination of materials and geometry to maximise resistance, needed to survive for only ten minutes in order to pass the client’s test.”

CorruSec variants had already achieved official SR3 and SR4 ratings.

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