Invisi-Gard FAQ’S

The most corrosion-resistant material in its class316 Grade has virtually the same mechanical, physical and fabrication characteristics as 304 grade, but with better corrosion resistance, particularly to pitting corrosion. There are some key differences between the two grades of stainless steel that pose both benefits and shortcomings depending on which grade you choose. Due to these differences in chemical composition 304 Stainless Steel is not as corrosion resistant as 316 Stainless Steel. “Tea Staining” and surface pitting or corrosion, are potential problems with 304 grade stainless steel but pose less of a threat to products manufactured from 316 grade stainless steel.
Why doesn’t INVISI-GARD 316 Grade Stainless Steel Mesh cut like
so many others?
The difference is in the tensile strength of the wire used to weave the mesh. As the wire used in the INVISI-GARD mesh is of such high tensile strength, the weaving process is made more difficult. The mesh is much harder to keep flat and straight and requires specialised weaving equipment and techniques to achieve the quality and flatness that is a hallmark of INVISI-GARD mesh. This explains why many cheap imported meshes either pass the knife-shear test but fail on weave quality and flatness, or pass on weave quality and flatness but can be cut like butter. Premium powder coating improves aesthetics and optical clarity. Download Brochure
The powder coat finish on INVISI-GARD has been specially developed to ensure great looks, clear vision and long life. INVISI-GARD 316 Marine Grade Stainless Steel Mesh is coated with a black polyester powder coat finish. This coating cuts down light reflection allowing clear visibility and is suitable for outdoor applications. Some competing systems use hybrid epoxy powder coatings which are completely unsuitable to outdoor environments leading to reduced product longevity. The best and most comprehensive warranty in the industryINVISI-GARD 316 Marine Grade Stainless Steel Mesh is covered by a 10 Year Warranty subject to the conditions on the INVISI-GARD Warranty. You get the assurance of a warranty from ALSPEC, the distributors of INVISI-GARD. ALSPEC is a wholly Australian owned company that has been in the commercial building products business for over 35 years.

The strongest material in its class

Some companies claim that their 0.9mm 304 grade stainless steel mesh is stronger than INVISI-GARD 0.8mm 316 Marine Grade Stainless Steel Mesh because it is thicker.

INVISI-GARD 316 Marine Grade Stainless Steel Mesh gains its strength from the Ultra High Tensile wire (900 MPa) from which it is woven. Even thicker wires can be easily cut if they are “Soft” or of low tensile strength.

ALSPEC have had INVISI-GARD mesh independently tested to Australian Standards and INVISI-GARD 316 Marine Grade Stainless Steel Mesh passes the Australian Standards AS5041-2008 for Knife-Shear.

Q: What range of products and colours are in the INVISI-GARD range?
A: INVISI-GARD can be powdercoated to any colour in the Dulux and Interpon range. It also comes in standard anodized finishes. INVISI-GARD products include hinged, sliding and stacking doors, window grilles, patio enclosures, cast panel doors, balustrades and emergency egress systems.


Q: Does INVISI-GARD come with a warranty?
A: We are happy to extend a 10 year warranty to all original purchasers of INVISI-GARD as long as the product has been maintained in accordance with the “Care and Maintenance” guidelines. These simply require the product to be cleaned at intervals dependant on your location. For example, if the product is by the coast, the period between cleaning is less than if the product is located inland.


Q: How much is it / Can I get a quote?
A: As every application is made to measure, the best way to get a reliable quote is to contact one of our Licensed Dealers who will arrange a suitable time to meet with you, give you a quote to install the product, and will answer any further questions you may have.


Q: Where can I get a look at the product?
A: Many of our Licensed Dealers have showrooms featuring INVISI-GARD and would be happy for you to view the product. You are invited to visit us at Factory 2, Corner of Michael Street and Princes Highway, Pakenham, Victoria, 3810

Q: What standards does INVISI-GARD meet?
A: When installed correctly by a Licensed Dealer, INVISI-GARD meets all of the requirements for Security Doors and Windows as determined by Australian Standards, these being AS5039, AS5040 and AS5041.

Q: How can I be sure the product I’m buying is INVISI-GARD?
A: Only Licensed Dealers have access to the INVISI-GARD range of products. On installation, the Dealer will identify the product as INVISI-GARD with a discretely placed INVISI-GARD sticker which also shows their contact details should you need them.

Q: Does the product require any maintenance?
A: INVISI-GARD requires very minor maintenance. Simply washing the product with a mild detergent and then rinsing off the soap residue from time to time will keep the product looking fantastic for many years and will keep your 10 year warranty valid. The interval between cleaning will depend on your location. For example, if the product is by the coast, the period between cleaning is less than if the product is located inland. When the product is installed, you will receive a set of Care and Maintenance Guidelines which helps to better understand what’s required.

Q: How long has INVISI-GARD been in the market?
A: INVISI-GARD was patented in 2000 and began being sold into the market shortly thereafter. Our Dealer network has installed well over a million square metres of INVISI-GARD systems throughout Australia so far, and growing at an amazing rate. The INVISI-GARD brand is owned, supported and backed by ALSPEC, which has been a major distributor of aluminium building systems since 1974.

Q: What grade of stainless steel is your mesh made from?
A: INVISI-GARD uses grade 316 stainless steel exclusively in its mesh. This grade of stainless steel is commonly called “marine grade” stainless steel and has superior corrosion resistance to other grades of stainless steel such as grade 304. This is because of the steel’s chemistry which includes 2% Molybdenum, an alloying element not found in grade 304. Marine grade 316 offers real value for money, as the product will look pristine for many years to come with a minimum of maintenance.

Q: Does INVISI-GARD rust
A: If the Care and Maintenance Guidelines are adhered to, INVISI-GARD will maintain a beautiful rust free appearance for the life of the product. Like all other similar stainless steel products though, if it is not maintained, there is potential for corrosion to occur.

Q: What is Galvanic Corrosion or Electrolysis
A: This type of corrosion occurs spontaneously as a result of different metals coming into contact with each other in the presence of a conducting electrolyte like salt water, dust, even humid air or other debris. The designs of some systems use fasteners or screws to fasten the stainless steel mesh to the aluminium frame with clamps. This means of clamping the mesh brings different metals into contact, that is the screws and the aluminium frame, and creates the potential for corrosion to take place. In the case of INVISI-GARD, there are no screws or fasteners and the different metals are completely isolated from each other, so this type of corrosion cannot take place.

Q: What is the fire rating for INVISI-GARD
A: The Australian Standard for Buildings in Bushfire Prone Areas refers to the screening of openings with meshes for various Bushfire Attack Levels BAL’s. For sites to BAL-40, the requirement is that the mesh needs to have apertures less than 2mm and be made from a non-corrosive steel. INVISI-GARD mesh has apertures of 1.6mm, and is made of marine grade stainless steel and so is suitable for fire sites up to BAL-40.