Technical Information
Steel Framing
Roof Batten
PRINCIPLE
Steel Roof Battens are a versatile and easy to use batten which are compatible with all roof claddings. They can be fixed directly to the Rafters using screws or nails through the flanges. The roof cladding is then fixed to the Battens using self drilling screws.
ADVANTAGES
LONG LIFE, QUALITY
ROOF BATTEN Section is guaranteed a long life. All materials conform to Australian Standards. There are no worries about white ants, borers or rotting. Galvanised or Zinc/Aluminium coated steel provides the best protection from the environment and gives long life to any building.
LABOUR & COST SAVING
ROOF BATTEN Section is manufactured locally by continuously roll-forming prefinished steel coil and because of the efficient profile it is a low cost building material. Because of the ease of construction and fast fixing of frame members, erection time is speedy and therefore labour costs low. The protective coating on this section means that it will last for years without being touched. keeping maintenance costs very low.
DESIGN
FLEXIBILITY
Using ROOF BATTEN means your home can be built as you want it giving design freedom. Alterations, additions and renovations are also easily made. ROOF BATTEN is also suitable for other applications than battens such as for framing van bodies, floor stiffeners, bracing, awning support frames, furring channel and shelving.
COMPATIBILITY
All the usual Roof Cladding Materials can be used with ROOF BATTEN and it also can be used in combination with other systems such as timber.
PERFORMANCE
ROOF BATTENS - MAXIMUM SPANS & SPACING (NON-CYCLONIC)
Maximum Span - 1200mm
Maximum Spacing - Internal Spans - 1500mm
End Spans (Up to 900mm Span) - 1200mm
Note: The Batten Spacing must not exceed the manufacturers Maximum Recommended Support Spacing for the Roof Cladding material.
These values are for buildings located under the following conditions as specified by AS.1170 Part 2. SAA Wind Code:
- Area - Non-Cyclonic
- Maximum Building Height - 5m
- Wind Velocity - 50 m/s
- Internal Pressure Coefficient - +0.8
- Terrain Category - 3
ALLOWABLE WIND PRESSURE
For roofs of different wind pressures and conditions, calculate the actual wind pressure from AS.1170 and then determine the span required from the table below.
MATERIAL SPECIFICATION
MATERIAL
ROOF BATTEN Hi-Tensile steel section is produced from Hi-Tensile Grade G550/AZ150 (550 MPa Minimum Yield Stress coated with a minimum 150gm/sq. m. Zinc/Aluminium alloy) complying with AS.1397.
THICKNESS
ROOF BATTEN is produced in a Base Material Thickness of 0.75mm (0.81mm TCT)
MASS AND AREA
Mass Per Unit Area - 1.1 kg/m.
Cross Sectional Area - 135 sq. mm.
SUPPLY DETAILS
LENGTHS
Roof Batten Standard Packs comprise of 7500mm lengths in bundles of 20 lengths.
ROOF BATTEN Section can be cut in the factory to any length specified by the customer. For special orders please contact your Steeline Centres.
INSTALLATION
FIXING TO HOUSE FRAME
STEEL (1mm Thick Min.): Use 2 - No 14-10 x 20 Hex Head Self Drilling Tek Screws per Rafter.
TIMBER (Hardwood): Use 2 - No 14 x 40 Hex Head Type 17 Self Drilling Wood Screws per Rafter.
TIMBER (Softwood): Use 2 - No 14 x 50 Hex Head Type 17 Self Drilling Screws per Rafter.
FIXING OF ROOF SHEET
Refer to Manufacturers Recommended Fasteners and Fixing details for Roof Sheeting.
LAYING AND LAPPING OF BATTENS
To minimise cutting, lay all Battens in one direction, starting from one end. (Hip Valley Roofs - lay Battens starting from Valley.)
BATTEN AND SHEET ROOFING AT JUNCTION WITH HIP AND VALLEY BATTEN:
PRECAUTIONS
CORROSIVE ENVIRONMENTS
The zinc/aluminium coating used to protect ROOF BATTEN Section is not recommended for use in unlined structures in severe industrial or highly corrosive environments within one kilometre of salt water locations. Please contact your ROOFING CENTRE for advice on this.
HANDLING & STORAGE
It is important to ensure that ROOF BATTEN Section does not become wet, as this will damage the coating and also reduce the life expectancy of the product. When stacked and left in the open for any length of time it is to be kept clear of the ground and completely covered to prevent moisture entering. If any components do become wet, they must be separated and air dried as soon as possible to remove any moisture.
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