Invisigard versus Crimsafe Security Doors

Key Insights

• Crimsafe security doors feature patented Screw-Clamp™ technology and tamper-resistant screws, offering superior impact resistance and mesh retention compared to Invisi-Gard’s EGP clamping system.


• Crimsafe’s Tensile-Tuff 304-grade stainless steel mesh is 26.5% thicker than standard 316-grade mesh and, combined with Santoprene insulation, provides excellent anti-corrosive performance in coastal and harsh environments.


• Crimsafe products exceed Australian Standards for dynamic impact resistance, with models like Classic, Ultimate, and Heavy Duty achieving up to 12x the required force levels—outperforming Invisi-Gard’s 10x standard.


• Crimsafe offers a broader model range (Classic, Ultimate, iQ, Heavy Duty) with varied features, including designer laser-cut steel options and 6–10 point electronic locking in the iQ model, catering to different home styles and security needs.


• Crimsafe doors are tested up to BAL-FZ for bushfire protection—exceeding Invisi-Gard’s BAL-40 rating—providing higher protection levels in extreme bushfire zones when installed with compliant windows.

While Invisigard and Crimsafe security doors have similarities, there are some notable differences between them.

Both reduce the risk of forced entry into your home, and as such, meet some very rigorous tests and standards.

The main differences relate to the materials used, screen fixing methods and available models.

Crimsafe vs Invisigard: Which Security Door Is Better?

Both Crimsafe and Invisi-Gard are high-quality security screen options, but there are some differences between the two. Crimsafe uses a unique, patented Screw-Clamp™ technology, which secures the stainless steel mesh to the frame with tamper-resistant screws. This design makes it virtually impossible for intruders to break through, while still allowing for excellent airflow and visibility. Invisi-Gard, on the other hand, uses a different system of interlocking pieces to secure the mesh, which may not be as strong as the Screw-Clamp™ technology used by Crimsafe. Additionally, Crimsafe screens are tested to withstand the impact of a 100kg intruder, while Invisi-Gard screens are tested up to 50kg. Overall, while both options offer excellent security and aesthetic appeal, the unique design and rigorous testing of Crimsafe make it a standout choice for those seeking the ultimate in home security.

Let’s compare the two by diving more into the key features.

Mesh Material

Both Crimsafe and Invisigard use high-quality stainless steel mesh for their security screens. The mesh used by both brands passes the Australian Standard Knife Shear Test (AS5039), which tests the screen’s resistance to repeated knife attacks.

To pass the test, the mesh must not tear more than 150mm after three knife strikes.

Invisigard Mesh

Invisigard security doors use 0.8mm 316-grade stainless steel mesh.

316 stainless steel contains molybdenum, which provides excellent resistance to corrosion and makes it particularly suitable for coastal environments where sea spray is common.

Crimsafe Mesh

Crimsafe doors use Tensile-Tuff® 304-grade stainless steel mesh, a patented material engineered to increase strength and durability.

Crimsafe mesh is 26.5% thicker than standard stainless steel security mesh, including 0.8mm 316 mesh.

While 304 stainless steel is not naturally marine-grade, Crimsafe uses Santoprene rubber insulation to protect the mesh from water penetration and salt build-up. This helps create a strong anti-corrosion barrier in harsh conditions.

Crimsafe doors also meet the salt spray corrosion resistance standard (AS2331.3.1).

Why security door mesh matters

High quality stainless steel mesh is critical not only for preventing attacks, but also to ensure the doors are resistant to corrosion, and are easy to clean and maintain. Both brands meet Australian standards in this regard and have warranties ranging from 10 to 15 years.

Mesh Securing Method

Another major difference between the two brands is how the mesh is fixed to the aluminium frame.

Invisigard EGP System

Invisigard uses its patented Extreme Grip Protection (EGP) system.

This system:

• Uses shaped PVC extrusions to capture the mesh in the frame


• Locks the mesh in place with a PVC wedge


• Avoids screws or metal-to-metal contact

This approach helps reduce corrosion risks while still providing a strong hold on the mesh.

Crimsafe Screw-Clamp Technology

Crimsafe uses its patented Screw-Clamp™ technology, which secures the mesh using tamper-resistant stainless steel screws.

The process involves:

1. Placing the mesh between two metal frame sections


2. Clamping the mesh tightly using screws


3. Securing the mesh across the entire frame

The number of screws used varies depending on the door model.

Once installed, the mesh can only be removed using specialised Crimsafe tools, adding another layer of security.

Crimsafe’s clamping system also distributes impact force around the frame, rather than concentrating it in one area.

Why mesh fixing matters

A strong fixing system ensures the screen cannot easily be pried out of the frame. Since most intruders want to enter quickly, a security door that resists removal can slow down or deter burglary attempts altogether. In many cases, simply having a security door installed can act as a powerful deterrent.

Strength and impact resistance

Security doors must pass dynamic impact tests (AS5041). These tests involve delivering five strikes from a weighted bag that delivers 100 joules of energy at the door each time. To pass, the screen must demonstrate it can withstand all five strikes.

Both brands meet or exceed the test for dynamic force for their products. For example, the Crimsafe Classic model provides over 5 x the standard and its Heavy Duty model exceeds the standard 12-fold. Invisigard security screen doors offer 10 x the standard.

Why impact resistance is important?

Offenders are likely to kick or strike a door not just once but several times over. The test is performed to show that the door has the strength to resist multiple kick attacks from a person or persons attempting to gain entry.

Locking mechanisms

Invisigard

Invisigard security doors come with 3-point locking. This refers to the number of secure points where the door locks into the frame.

Crimsafe

Crimsafe doors also come with 3-point locking, with the exception of the iQ model which offers six to 10 points and the option of electronic locking.

Why do multi-point locks matter?

Multi-point locking enables the door to be locked at several points in the door jamb, making locking up much more secure than in the case of single-point mechanism.

Available models

Invisigard offers one model, that comes with multiple applications – these being sliding, single hinged, or French door screens.

All Invisigard screens are made from the same 316-grade stainless steel mesh, come with a 15-year warranty, and offer 2,000 hours of salt spray corrosion protection.

Crimsafe has four models on offer:

• Classic – up to 550 joules of impact and a 12-year warranty.


• Ultimate – up to 750 joules of impact and a 15-year warranty. The Ultimate has the highest number of applications in the range.


• iQ – similar features to Ultimate but with additional locking points and only one application (hinged door).


• Heavy Duty – up to 1200 joules impact and 10-year warranty.

At My Security Door, we also offer the option of designer Crimsafe laser cut security doors to our customers. These doors consist of a security screen door with the added strength, security and durability of a steel laser cut panel.

All Crimsafe security doors use Tensile-Tuff mesh and offer 3,000 hours of corrosion resistance. Applications include hinged, sliding, stacking, French, and bi-fold, depending on the model.

Why product range matters

A variety of products allows for a greater range of solutions. It means the best product can be selected according to regional risk, property style, taste, application, and budget.

Bushfire protection

Both brands pass the AS3959 standard for homes in bushfire-prone zones.

Invisigard screens have a BAL (Bushfire Attack Level) 40 rating – the second-most severe attack level. This means the screens provide protection against ember attack and heat flux.

Similarly, Crimsafe’s screens provide protection from ember attack and radiant heat. They also protect glass from burning debris up to BAL-FZ (the most severe bushfire attack level) when used in conjunction with compliant windows.

Why bushfire ratings matter

Security doors are an investment. As such they not only need to able to resist attack from intruders and protect your property, but also from natural disasters like bushfire so they can last as long as possible.

Need help choosing the right security door for your home or business? Get in touch with our team for a quote or alternatively explore our security doors.