TRUSTED BY THE GOLD COAST SINCE 1990
Invisi-Gard Performance Testing



At Stop Thief Security, we are committed to safeguarding Gold Coast residences and commercial properties with top-tier security solutions. Our partnership with Invisi-Gard enables us to offer security screens that not only meet but surpass Australian Standards, ensuring unparalleled protection and peace of mind.
Dynamic Impact Test
Bushfire Testing
Fire Attenuation Testing
Corrosion Testing
Fall Prevention Testing
Energy Efficient Testing
Invisi-Gard security products undergo rigorous testing to ensure they meet and exceed Australian Standard AS5039-2008, encompassing the following assessments:
Dynamic Impact Test
This test simulates a forceful kick to a security screen door using a 40kg sand and lead-filled bag, delivering 100 joules of energy per impact. The standard requires screens to withstand five consecutive impacts without the mesh dislodging or breaching. Invisi-Gard's patented Extreme Grip Protection (EGP) retention system enables their screens to endure over 50 consecutive impacts without failure, significantly surpassing the standard.
Jemmy Test
This assessment evaluates resistance to forced entry using tools like screwdrivers or jemmy bars. A narrow-bladed lever is inserted at critical points such as locks, hinges, and fasteners, applying torque to simulate an intrusion attempt. Failure is determined if all hinges, locks, or fastening points give way, or if any part of the edge deflects, creating a gap exceeding 15 centimetres between the screen and its frame. Invisi-Gard products pass this test due to the quality of their hardware and the rigidity of their aluminium framing. Additionally, all Invisi-Gard hinged security doors come standard with three-point locks, enhancing security by engaging the lock at the centre and providing extra latches toward the top and bottom of the door for increased strength.
Knife Shear Test
This test simulates an attack using a sharp instrument, such as a utility knife, to assess the screen's ability to withstand cutting attempts. The objective is to ensure the mesh resists penetration and maintains its integrity under such attacks. Invisi-Gard's 316 Marine Grade Stainless Steel Mesh is designed to withstand these attempts, providing robust protection against cutting implements.
By excelling in these tests, Invisi-Gard demonstrates a strong commitment to providing high-quality security solutions that offer peace of mind to homeowners and businesses alike.
In the Gold Coast Hinterland, where bushfire risks are a significant concern, ensuring that homes are equipped with appropriate protective measures is essential. Invisi-Gard's BAL40 screen range has been specifically designed to withstand temperatures up to 40kW without failure to the EGP retention system, offering protection against ember attacks and burning debris. This compliance with Australian Standard AS1530.8.1 ensures that the screens remain operational even after exposure to severe bushfire conditions.
For residents seeking to enhance their property's bushfire resilience, Stop Thief Security stands as a trusted local provider. Established in 1990, this family-owned and operated business is one of the Gold Coast's leading manufacturers, suppliers, and installers of stainless steel and aluminium security screens. Their expertise ensures that installations meet the highest standards, providing both security and peace of mind to homeowners in bushfire-prone areas.
By choosing Invisi-Gard screens installed by Stop Thief Security, residents in the Gold Coast Hinterland can significantly bolster their home's defence against bushfires, ensuring compliance with stringent safety standards and enhancing overall property protection.
Invisi-Gard's Fire Attenuation Screens are engineered to mitigate the spread of fire between buildings by reducing radiant heat transmission. These screens are particularly vital for window openings situated less than 3 metres from a property boundary or within 6 metres of another building on the same property. They comply with Section C3 of the National Construction Code, serving as a deemed-to-satisfy solution for protecting such openings.
Invisi-Gard screens have undergone rigorous testing in accordance with AS1530.4:2014 Appendix B7, achieving up to a 55% reduction in radiant heat at an incident energy of 40kW/m² over a 130-minute period. This significant attenuation helps prevent fire spread via flames and radiant heat between structures.
For Gold Coast residents seeking to enhance their property's fire safety, Stop Thief Security stands as a trusted local provider. As one of the Gold Coast's leading manufacturers, suppliers, and installers of stainless steel and aluminium security screens, they offer Invisi-Gard products to bolster both security and fire protection.
Before installation, it's essential to consult with a Fire Certifier or Fire Engineer to ensure that Invisi-Gard Fire Attenuation Screens meet specific site requirements and receive the necessary approvals.
By choosing Invisi-Gard screens through Stop Thief Security, Gold Coast residents can effectively enhance their property's resilience against fire hazards while maintaining robust security measures.
In the Gold Coast's coastal climate, selecting security screens that can withstand harsh environmental conditions is crucial. Stop Thief Security, a trusted local installer, offers Invisi-Gard products renowned for their exceptional corrosion resistance.
Corrosion Resistance of Invisi-Gard
Invisi-Gard utilises marine grade 316 stainless steel mesh, known for its superior corrosion resistance compared to lesser grades like 304. This enhanced durability is particularly beneficial in coastal areas where exposure to salt and moisture is prevalent.

Accelerated Testing
To ensure long-term performance, Invisi-Gard screens undergo rigorous testing, including over 2,000 hours in a salt spray chamber, simulating extended exposure to corrosive environments without showing signs of deterioration.
Patented EGP Retention System
A notable feature of Invisi-Gard is its patented Extreme Grip Protection (EGP) retention system, which prevents direct contact between the stainless steel mesh and aluminium frame. This design effectively eliminates the risk of galvanic corrosion, a common issue when dissimilar metals come into contact.
Invisi-Gard's fall prevention screens are designed to enhance child safety by allowing windows to open beyond 125mm, thereby improving airflow and natural ventilation. These screens have been rigorously tested and comply with the National Construction Code for the Protection of Openable Windows, ensuring they meet stringent safety standards.
For residents on the Gold Coast seeking to enhance their home's safety, Stop Thief Security stands as a trusted local provider. Established in 1990, this family-owned business specialises in the manufacture, supply, and installation of high-quality security solutions, including Invisi-Gard stainless steel security screens.

By choosing Stop Thief Security's installation services, homeowners can ensure their properties are equipped with compliant fall prevention screens, offering both security and peace of mind.
Installing Invisi-Gard security screens over your windows can enhance their energy efficiency by up to 51%.
This improvement is attributed to the screens' ability to reduce solar heat gain, leading to a more comfortable indoor environment and potential savings on energy bills.
For residents and businesses on the Gold Coast seeking to upgrade their property's energy efficiency and security, Stop Thief Security is a trusted local provider. Established in 1990, this family-owned business specialises in the supply and installation of Invisi-Gard stainless steel security screens, ensuring both protection and enhanced energy performance for your property.
By choosing Stop Thief Security for your Invisi-Gard installations, you can enjoy the dual benefits of increased security and improved energy efficiency, tailored to the unique needs of Gold Coast properties.
