Product Details

Product Description

roof wire mesh Roof Safety Mesh

Roof safety mesh is formed by welding of zinc coating wires using electric resistance techniques under pressure. Welded roof safety mesh is a primary means for fall protection when persons working at heights in domestic, commercial and industrial building applications and housing roof construction that use metal or timber purlins, or a tested supporting member.

Roof Safety Mesh

Roof safety mesh coverage

Roof safety mesh shall be installed over the entire roof area, including penetrations, and remain in place for fall protection.

Standard roofing safety mesh complies with
Our roof safety mesh complies with Australian/New Zealand - standard AS/NZS 4389:2015 roof safety mesh.

Welded roof safety mesh Features
The wires are clean, smooth and free from defects detrimental to its subsequent processing and end use.
Wire with zinc coating and UV stabilized.
Mesh construction shall be formed by welding of wires using electric resistance techniques under pressure.
Apart from the cut ends, roof safety mesh is clean and free of defects, sharp edges, burrs and similar imperfections that may cause injury to the handler or installer.

Specification

Roof safety mesh specifications, staples and fasteners needed for mesh installation.

Table 1 Wire for roof safety mesh

Minimum nominal diameter of wire mesh	Minimum mass of zinc coating	Minimum tensile strengths of transverse wire	Minimum tensile strengths of longitudinal wire
2.00 mm	35 g/m2	450 MPa	500 MPa

Table 2 Roll of roof safety mesh

Spacing of longitudinal wires	Spacing of transverse wires	Length of the mesh roll	Width of the mesh roll	Nominal weight of the mesh roll
150 ± 5 mm	300 ± 5 mm	50 m	1.8m	24kgs

Table 3 requirements for roof safety mesh staples

Minimum mass of zinc coating	Minimum nominal diameter of staple wire	Minimum length of staple		Maximum spacing of staples
		Stapling onto side of of staples timber rafter	Staples on top of timber rafter
35 g/m2	3.15mm	30mm	40mm	155mm

Table 4 requirements for roof safety mesh fasteners

Crown width of fastener	Opening width of fastener	Coating type	Fastener size
22mm	16mm	galvanized	1.90 mm diameter or equivalent strip

Installation

Installation requirements

The installation of roof safety mesh shall comply with the following steps:
1. Position of roof safety mesh;
2. Fixing of roof safety mesh;
3. Joining rolls or sections.

Roof safety mesh longitudinal wire joining.

Side lapping of roofing safety mesh. For purlin spacing 1200-2200 mm, fasteners to be fitted at maximum of 900 mm centres and minimum single lap. For purlin spacing greater than 2200 mm, fasteners to be fitted at maximum 600 mm centres and minimum double lap.

In order to better understand safety mesh, please see the terms of roof safety mesh.

Fastener
A ring fastener (or 'hog ring') used for joining side laps of roof safety mesh.
Fixing
Connections between the roof safety mesh and the roof member.
Joints
Connections between rolls or sections of roof safety mesh.
Lapping
Where the sides of roof safety mesh are overlayed to prevent a gap forming between the two.
Longitudinal wires
Wires of roof safety mesh that span between purlins and are welded to transverse wires; also known as line wires.
Mesh sag
A measurement of downward deflection of roof safety mesh between two roof members.
Purlin
Beam, parallel to the eaves, that is supported by rafters and gives support to roof cladding.
Roof member
A supporting member to which the roof safety mesh is attached, and which has the structural capacity to ensure the performance requirements. Typically purlins or rafters, but may include bridge bars or other members.
Roof safety mesh
Steel wire mesh, comprising longitudinal and transverse wires, fixed to an appropriate roof member to prevent persons from falling during installation of roofing materials and support insulation materials. Roof safety mesh is intended to control the risk of fall hazards over the entire roof area, including penetrations, both during construction and after the building enters service.
Staples
Component used for fixing the ends of longitudinal wires to appropriate timber roof members.
Transverse wires
Wires of roof safety mesh that are parallel to the purlins and are welded to the longitudinal wires; also known as cross-wires.
Ultraviolet (UV) protection
The stabilization process applied to materials susceptible to deterioration from UV radiation.