Australian Standard AS 5039-2003 Safety screen door and security window grilles is the main product standard relating to Safety Screens. This standard calls up AS 5041-2003 Methods of Test – Safety screen doors and window grilles, which specifies the following tests:
This test was introduced after it was found that grilles fitted to security screen doors were subject to impact breakage through kicking of the grille panel.
The test is performed with a sand and lead filled bag and weighing around 40kg. At impact the bag imparts 100 joules of energy to the panel being tested. The test is repeated 5 times, simulating repeated kicking as the burglar attempts to break into your home.
The test panel fails the test if the infill material (mesh) comes out of the door or window framing, or if the impact breaches the material in any way.
The Australian Standard AS5041 requires security screens and doors to resist five consecutive impacts, each of 100 Joules.
INVISI-GARD easily meets this requirement and can resist in excess of 50 consecutive impacts, each of 100 Joules without failure.
INVISI-GARD passes because of our Patented EGP Retention System which runs around four sides of the screen. This Patented retention system resists the tendency of the mesh to be pulled out of the frame.
INVISI-GARD shows its strength by withstanding a 4kg block of hardwood fired at a speed of 20 meters per second. This corresponds to a debris impact during a storm event with wind speeds of 180 kilomtetres per hour.
The test panel fails if any of the hinges or locking points or their fixings fail, or if the edge of the security door has deflected to a gap wider than 15 cm.
INVISI-GARD products pass this test thanks to quality of their hardware and the stiffness of our aluminium section framing.
Also all INVISI-GARD hinged doors are manufactured with three point locks as a standard feature. Three point locks provide higher security as not only does the lock engage in the centre position but also has extra latches towards the top and bottom of the door that give even more strength.
In order to establish the corrosion resistant properties of security systems, long term environmental conditions are simulated in a reduced timeframe using accelerated weathering tests.
The Neutral Salt Spray Test is one such method, and is also referenced as Australian Standard AS2331.3.1. This test is an inexpensive but effective means of comparing the relative corrosion resistance performance between competing systems.
In essence, this test requires that a sample of a security product be immersed in a sealed booth. The atmospheric conditions in the booth are then stabilized in terms of temperature, relative humidity, pH neutrality, and salt concentration.
In this particular test, the salt concentration has the potential to act as an electrolyte, and this accelerates corrosion in security systems dramatically. The samples are inspected at regular intervals for signs of corrosion, and during these inspections, are washed down and dried before once again being immersed in the booth.
Safety doors and screens are required to resist 240 hours in this accelerated weathering test without showing any corrosion whatsoever.
Whilst some competing systems deteriorate as early as the 500 to 750 hour mark, INVISI-GARD systems have been extensively tested and have resisted 2,000 hours of such immersion without any signs of corrosion. The Grade 316 stainless steel mesh used in INVISI-GARD, on its own resists a remarkable 10,000 hours with any signs of the onset of corrosion.
Clearly the benefits of combining the isolation of dissimilar metals using our EGP system, and using the highest quality stainless steel mesh yields superior corrosion resistance performance, and makes INVISI-GARD the premier security solution for your home or business.
During this test, a specially designed machine draws a knife blade along a line down a panel three times. After each draw, the used blade is replaced with a new one. The sample fails if a continuous cut of 15cm or greater is achieved after the third draw. INVISI-GARD passes this test in both the warp and fill directions, unlike many imported meshes which only pass in one direction.
INVISI-GARD is able to pass this test thanks to the strength of the 316 Marine Grade Stainless Steel Mesh.
In addition to this regime of testing which is specific to Safety Screens Invisi-Gard have also conducted relevant industry tests in the areas of:
One of the toughest tests of strength for a security system is the Cyclonic Missile Impact Test in accordance with Australian Standards AS1170 – 1989.
In this test a 4 kilogram piece of hardwood is aimed at the centre of the security screen and then launched reaching a speed of 15 metres per second or 54 kilometres per hour at the time of impact.
Not only did the INVISI-GARD screen stop the timber missile in its tracks, there was no breakage of the mesh and only a minor deformation in the centre of the panel! This means the screen doesn’t even require replacement and is ready for more punishment in the event of another cyclone.
INVISI-GARD Stainless Steel Doors and Screens combine the proven strength and security of 316 Marine Grade Stainless Steel Mesh with extruded aluminium perimeter framing that looks great and retains visibility whilst providing excellent security.
An additional benefit of installing INVISI-GARD Stainless Steel Doors and Screens is the corrosion resistant properties of the 316 Marine Grade Stainless Steel Mesh combined with the patented EGP Retention System. In an environment as harsh as a coastal cyclonic region where airborne salt mist is an ever present factor, lesser grades of stainless steel mesh or mechanically fixed systems will fall victim to corrosion and ultimately need costly replacement.
Imagine the possible uses for a product with this much protection.
No more cricket balls through windows as a result of the backyard “six”. Golf balls, stones, tree branches and other flying objects simply bounce off INVISI-GARD. All of these additional benefits at no extra charge when you install INVISI-GARD Stainless Steel Doors and Screens.
INVISI-GARD Firesafe Fire Attenuation and Bushfire Resistance Properties
Don’t welcome fire into your home or business premises, INVISI-GARD Firesafe doors and window screens are constructed with corrosion resistant Grade 316 mesh and is retained in the frame using EGP Technology preventing corrosion that is associated with fasteners.
Higher level of resistance to fire damage.
INVISI-GARD Firesafe will protect your property from floating embers preventing them passing through the screens and its fire attenuation properties will reduce the intensity of radiant heat flux by up to 27% over two hours based on an incident energy of 80 kW per square metre, and 43% based on an incident energy of 40kW per square metre. ( Tested by the CSIRO to the latest test method using broad spectrum radiometer measuring both incident heat flux and transmitted heat.).
In most bushfire situations the heat level is around 40kw/m2 and passes within minutes. INVISI-GARD Firesafe has been tested at up to 80kw/m2 for two hours which is well above the minimum requirement of one hour.
Australian Standard AS 3959-2009 Construction of buildings in bushfire prone areas governs the requirements of buildings constructed in bush fire prone areas. By installing INVISI-GARD Firesafe your property will comply with AS3959-2009 and the requirements of the Building Code of Australia.
Inner-city constructions require additional attention to fire attenuation.
By installing INVISI-GARD Firesafe more flexibility of design is possible and cost savings can be made. Windows facing adjoining properties can be positioned within 3 metres of the boundary or within 6 metres of a building positioned on the same building allotment.
The installation of INVISI-GARD Firesafe can offer substantial cost savings as INVISI-GARD Firesafe reduces heat flux which may eliminate the requirement for drench boxes to be installed above window openings. Where INVISI-GARD Firesafe is not deemed to be sufficient on its own, INVISI-GARD Firesafe can be used in conjunction with drench boxes increasing the attenuation properties by a considerable margin.
Want to know more about INVISI-GARD products?
You can contact us on 1300 INVISI (1300 468 474) and order an Architects and Builders pack which includes a copy of the CSIRO Fire Attenuation report.