Roof Bloc 300 Roof Safety Mesh

Rolls of Roof Bloc 300 galvanised roof safety mesh, 2.0 mm high tensile wire with 300 x 150 mm aperture, labelled and wrapped ready for delivery

1/2

$99.75

$99.75 $105.00

GST inclusive

Dispatch: Most orders are processed the same day. Metro delivery: Usually 1–3 business days. We do our best to get most items out on the next business day.

Australia-wide freight · Local pickup from Epping, VIC by arrangement. Ordering from the outback? Get in touch about deliveries to remote locations · Shipping details

Roof Bloc 300 is Australian made galvanised roof safety mesh, 300 mm by 150 mm aperture, designed to comply with AS/NZS 4389:2015 and tested to Appendix A of that standard by a NATA accredited laboratory. It goes across the purlins or battens and is fixed down before the roof sheets, so it is in place while anyone is still working above the ceiling.

What it is for

The primary job is fall protection for people working on a steel or timber framed roof. The secondary job is supporting synthetic underlay in enclosed roof spaces and foil underlay in exposed ones. It can also support insulation, but check the intended use with the insulation manufacturer first, because not every product is meant to be carried on mesh. Roof safety mesh: when is it required covers where mesh is the right control and what the standard actually specifies.

Specification

Wire is 2.0 mm, galvanised to AS/NZS 4534:2006 W02, with line wires at 500 MPa minimum tensile and cross wires at 450 MPa minimum. Longitudinal wires run at 150 mm centres, cross wires at 300 mm.

Sizes

Three stock widths, all 50 m rolls: 1800 mm covering 90 m², 2250 mm covering 112.5 m² and 2400 mm covering 120 m². The 900 mm and 1200 mm widths are made to special order, and cut to length rolls are available, so ask if your run does not divide neatly.

Limits worth knowing before you order

Not recommended for coastal or seashore sites, or buildings with a high internal moisture load. It is rated for fall protection and underlay support, not as a structural element. Compliance holds only while the mesh is undamaged and installed to the written instructions, by or under the supervision of a licensed builder, so do not use mesh that has been kinked or cut in transit.

Full wire and compliance figures are in the table below.

Technical data

Austral Wire product data sheet (PDF)

Austral Wire Products · Galvanised high tensile steel wire mesh · Roof fall protection and underlay support application

Sizes stocked

Width	Roll length	Coverage per roll	Weight per roll	Product code
1800 mm	50 m	90 m²	about 24.0 kg	650050
2250 mm	50 m	112.5 m²	about 27.0 kg	650070
2400 mm	50 m	120 m²	about 31.0 kg	650100

900 mm and 1200 mm widths are made to special order. Cut to length rolls are also available.

Mesh and wire

Mesh size	300 mm x 150 mm
Longitudinal wires	At 150 mm centres
Cross wires	At 300 mm centres
Wire diameter	2.0 mm
Line wire tensile strength	500 MPa minimum
Cross wire tensile strength	450 MPa minimum
Wire coating	Galvanised to AS/NZS 4534:2006 W02
Origin	Made in Australia by Austral Wire Products

What it is for

Primary use	Fall protection for anyone working on a steel or timber framed roof
Secondary use	Supports synthetic underlay in enclosed roof spaces and foil underlay in exposed roof spaces
Insulation support	Can be used to support insulation, but check the intended use and compatibility with the insulation manufacturer first
Buildings	Domestic, commercial and industrial

Compliance

Standard	Designed to comply with AS/NZS 4389:2015 for roof safety mesh
Testing	NATA accredited testing to AS/NZS 4389 Appendix A
Installation	Must be installed by or under the supervision of a builder licensed or registered in the relevant state or territory

Compliance holds only while the mesh is undamaged, installed to the written instructions and used within the limits set out below.

Limits of use

Not recommended for	Coastal and seashore sites, and buildings with a high internal moisture load
Roof only	Rated for fall protection and underlay support, not as a structural element
Compatibility	Test compatibility with the building structure materials before installing

Fitting notes

Runs across the purlins or battens and is fixed down before the roof sheets go on, so it is in place while anyone is still working above the ceiling. Lap and fix it the way the installation instructions set out, since the lap is what carries the load at a joint. Do not use mesh that has been kinked, cut or damaged in transit, because the fall rating depends on the wire being intact. If it is also carrying insulation or underlay, confirm with the insulation supplier that the two work together before you order.

Figures are taken from the Austral Wire Products data sheet for Roof Bloc 300, October 2022. Product codes and roll weights are from the Austral Wire Products Roof Bloc 300 product catalogue, April 2026. The full manufacturer document is linked above. Austral Wire can change specifications without notice, so check the current sheet before specifying on a job.