Combining the strength of Marine Grade 316 Stainless Steel with the beauty and flexibility of aluminium, INVISI-GARD Security Screens offer unparalleled clarity of vision with uncompromised security.

Using the unique, INVISI-GARD Patented EGP Retention Method, you can be assured that the Stainless Steel Mesh will defy the most determined attack from both intruders and corrosion. Tested and approved in accordance with Australian Standard AS5039.2005, you can be assured of having made the right choice when you choose INVISI-GARD.

Invisi-gard Stainless steel doors can be installed with our full range of aluminium and cast aluminium doors

 Salt Spray Test

Australian Standard AS5039 requires that security screen doors and windows must exhibit corrosion resistant properties in order that the consumer is able to buy a product that is fit for purpose and will last.

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.

Security 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.

 Dynamic Impact Test

This Australian Standard test simulates a kick to a security screen door.

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.

 Lock and Hinge Lever Test

The effects of a jemmy attack against a security screen door or window grille are simulated by allowing a standardised narrow-bladed lever (representing a large screw driver) to be inserted against the locking, fastening and hinging points and a turning force (torque) is applied to those points via the lever.

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 our hardware and the stiffness of our aluminium section framing.

Also all INVISI-GARD hinged security 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.