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Invis-gard outperforms


Product Testing

Dynamic Impact Test: AS5039-2008

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.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.

Invisi-Gard absorbed over 10 times the dynamic impact energy required by Australian standards

Why Choose Invisi

 Invisi-Gard is Australia’s premier security screen brand because it's made from the toughest material in its class and features unique patented product architecture. The combination of these two vital features provides the maximum protection for your family and your home.At the heart of every Invisi-Gard security screen and security door is our high tensile 316 marine grade stainless steel mesh.The grade 316 mesh used in Invisi-Gard sets the world standard in terms of its quality, precision and longevity.This class leading mesh is retained in an aluminium frame using our patented EGP (Extreme Grip Protection) retention system. This unique design ensures maximum strength and durability through an assembly technique that avoids contact between the two dissimilar metals - a major cause of corrosion over time.Invisi-Gard is designed first and foremost to protect your family and home from would-be intruders and performs this task better than any other product on the market.It also protects your home from flying insects and maintains your view.Invisi-Gard security doors and screens are without question the best investment for your family's safety. They are also the best investment for the look and value of your home.

Why Choose Invisi-Gard?

  • 10x the strength of the Australian Standard in terms of absorbed energy.
  • Heavy duty extruded aluminium perimeter frame for extra strength.
  • The patented EGP retention system ensures the mesh can withstand dynamic impacts. In the testing required to meet AS5041-2008 the screen is subjected to an impact test consisting of a swinging bag weighing 40kg impacting the door five times. This test simulates a door being repeatedly kicked as a burglar attempts to break into your home.
  • The 316 Marine Grade Stainless Steel Mesh is extremely difficult to cut.
  • The patented EGP retention system means no unsightly screws or other fixings.
  • Invisi-Gard is supported by a 15-year warranty from ALSPEC, a wholly Australian owned company that has been in business of supplying building products to the high specification commercial building industry for more than 35 years.
  • A national network of more than 350 dealers means there is a dealer in, or near, your town or suburb who will custom make and fit your Invisi-Gard doors and screens.
  • The powder coat finish on Invisi-Gard has been specially developed to ensure great looks, clear vision and long life.
  • The EGP retention system ensures that there is no contact between the mesh and frame. This eliminates the threat of corrosion that is present when there is contact between two different metals.
  • All Invisi-Gard hinged doors are fitted with three point locks for added security.
  • All Invisi-Gard hinged doors are fitted with three hinges for added security.
  • All Invisi-Gard sliding doors are fitted with three point locks for added security.
  • The EGP retention system actually pulls the mesh tightly into the frame so that your door looks great and eliminates the possibility of sag.
  • Invisi-Gard easily exceeds all relevant Australian and industry standards.
  • Each Invisi-Gard door and screen is custom built to suit your home.
  • A full range of standard colours is available for optimum aesthetic impact.

Stainless steel the Facts


Stainless steel is a generic term for a family of corrosion resistant alloy steels containing 10.5% or more chromium. All stainless steels have a higher resistance to corrosion than their mild steel counterparts.

This resistance to attack is due to the naturally occurring chromium-rich oxide film formed on the surface of the steel. Although extremely thin, this invisible, inert film is tightly adherent to the metal and extremely protective in a wide range of corrosive media. The film is rapidly self-repairing in the presence of oxygen. Damage by abrasion, cutting or machining is quickly repaired.Grade 316 should be selected as a minimum within five kilometres of the surf.The less expensive grades (such as 304) will probably become tea stained or even suffer more severe corrosion. Grade 316 has excellent corrosion resistance in a wide range of media. Its main advantage over grade 304 is its increased ability to resist pitting and crevice corrosion. It resists ordinary rusting in virtually all architectural applications, and is often chosen for more aggressive environments such as sea-front buildings and fittings on wharves and piers.Grade 316 has virtually the same mechanical, physical and fabrication characteristics as 304 with better corrosion resistance, particularly to pitting corrosion.Invisi-Gard Stainless Steel Security Products use only 316 Marine Grade Stainless Steel.You can rest assured your new security doors and screens will look great for years with only a moderate amount of maintenance. And unlike some other competing products your warranty is not subject to the ongoing use of a proprietary cleaning product. 

Salt Spray


Salt Spray Test: AS2331.3.1

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 without 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. 

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Style Glass and Aluminium

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