1. We 'screw-clamp' the mesh to give it enormous strength under attack
Only Crimsafe screw-clamps security mesh to the frame with tamper-resistant screws that go right through a metal clamp, through the mesh and into the frame. This is repeated every 125mm around the frame.
The patented screw-clamp hooks into the aluminium frame and with its lever action creates a "single frame member" effect, meaning impacts are absorbed by spreading the load around the whole frame. And when screwed down, special teeth in the screw-clamp and frame "bite down" on the profile of the mesh to grip it tightly. (See diagram below)
The result gives Crimsafe its enormous strength against attack.
2. Our 304 Security mesh is 12.5% thicker, so it's harder to break or cut
At .9mm in diameter Crimsafe's "Tensile Tuff” security mesh is up to 12.5% thicker than most other meshes on the market, making it stronger and harder to cut or penetrate.
We developed Tensile Tuff specifically for use as a security screen product that would also be an effective insect screen and look great both inside and out. Made from 304 grade stainless steel wire, it has a special high tensile and elongation factor which gives it strength and the ability to be woven into a very tight aesthetically pleasing mesh.
Tensile Tuff utilises its Category 4 Cyclone ballistics rating as a proven strength advantage over other steel meshes.
It also resists corrosion in coastal areas and harsh environments just as well as any other type of stainless mesh (even Marine grade mesh) when used in a security screen.
3. Mid-rails come as standard to make our doors even stronger and look great
A mid-rail gives you these 5 great benefits:
It stiffens a door or enclosure, to resist attack
It strengthens door locks against jemmy attacks
It protects the hinges on a door by reducing a criminal's ability to lever the door from the wall
It acts as a visual warning to prevent you from walking through an apparently open space.
It can become an architectural feature and give your doors more flexibility in design.
Crimsafe Security up close -
The patented screw-clamp and hook feature transfers the force of an impact around the frame, so the mesh remains intact and the unit is able to withstand enormous impacts. All our standard products are rated to resist Cat. 3 Cyclones. Most competitors use plastic wedging to hold in mesh. Even UV stabilised plastics have been known to lose strength after degradation caused by UV light and summer/winter temperature changes
Tamper-resistant screws, exclusive to Crimsafe Licensees, are driven right through clamp and mesh and into the frame, to give unsurpassed strength
Crimsafe uses our own specially developed .9mm "Tensile Tuff" security mesh, because it is more suited to security applications than other meshes, including 316 Marine grade
The Crimsafe clamp and frame have special teeth designed to match the woven profile of the mesh and "bite down" on it with a vice-like grip
Specially designed 3M insulation tape keeps water out to totally resist corrosion
Special coating developed in conjunction with Dulux gives our mesh commercial grade UV fade resistance for longer life, and makes cleaning easier
Dick Johnson talks Crimsafe® .
Racing legend Dick Johnson explains how Crimsafe® compared to other brands in recent independent testing.
Testing by UNSW@ADFA Proves Crimsafe's® Strength
Recently, Crimsafe had the University of New South Wales' School of Aerospace and Civil and Mechanical Engineering at the Australian Defence Force Academy design a rigorous scientific test to determine exactly how much force Crimsafe® screens can resist before breaking. We also tested stainless steel security screens bought directly from 9 leading competitors.
The results were both surprising and a little disappointing. Let us explain....
The Dynamic Impact Test
In the Australian Standard AS5041:2003 - Methods of Test, the Dynamic Impact Test simulates the effects of a human impact against a security screen door or window grille by allowing a standardised weight to swing against the test specimen 5 times. Each impact is about 100 joules of energy. That's roughly the impact force imparted by a child stumbling into a glass door and in fact, the test was originally designed for the glazing industry so they could make glass that didn't shatter upon a small impact.
Standard not high enough, yet competing screens still fail
Unfortunately, 100 joules is a lot less force than a motivated burglar can deliver. After the testing we requested the scientists conducting the test to make a recommendation on the level of impact resistance that the Australian Standard should require, and they put the figure at 150 joules and 10 impacts if the burglar kicks the door and 200 joules if the burglar is able to use an implement such as a baseball bat or brick.
Yet 6 competing brands that we tested failed to meet even the current minimum standard of impact resistance. These screens are leading brands and they broke before the test delivered even 100 joules of energy in an impact!
3 security screens managed to reach the 150 joule level but only two exceeded it and they both failed to protect against anything more than 200 joules. From our perspective it is very disappointing that the Australian Standard doesn't require better performance of security screens. In fact, in most cases, the word 'security' should not be associated with these screens as they fail to deliver adequate protection against one of the most common methods of entry: a well-aimed kick.
Watch as three separate competing brands fail to withstand the UNSW at ADFA testing.
Crimsafe ® Security Screens passed easily!
We tested three types of Crimsafe® product: our standard residential range, our heavy duty range and our commercial range.
Crimsafe® Residential screen withstood up to 500 joules of impact energy. That's twice as good as any competing screen and 5 times the impact level the current Australian standard requires.
Crimsafe Heavy Duty screen withstood 700 joules of energy at impact. Seven times higher than the impact level that the standard requires.
Our Commercial screen withstood 1200 joules of impact energy. That's 12 times higher than the impact level of the standard and nearly 5 times more force than any competing screen can withstand. Watch the video below with the sound up and you'll get a good sense of just how heavy an impact of 1200 joules is.
Here's a graph of how all the screens performed in comparison to each other.
