LYSAGHT FLATDEK® II (Queensland Only)

Product Description and Features

LYSAGHT FLATDEK® II is a modern long span cladding particularly well suited to many types of home improvement projects such as room additions, carports and awnings.  The underside of LYSAGHT FLATDEK® II features clean un-interrupted lines, with an attractive gloss finish.

• Pan-fixed roof sheeting for open sided awnings where high degree of weather tightness is not required
• Uninterrupted ceiling provided by a special closed-rib profile with long spanning capabilities
• The top side finished in Surfmist® COLORBOND® steel. The ceiling side finished in either Dover White or Classic Cream high gloss COLORBOND® steel.

Common Uses of this product

Roofing patios, awnings, carports

Warnings

• Available in Queensland only
• Minimum recommended roof pitch is 2 degrees (1 in 30)
• Lead and copper are not compatible with COLORBOND® steel
• Read full details on Guidelines for using COLORBOND® steel & ZINCALUME® steel.

Product Details

Schematic

Material Specification

• COLORBOND® prepainted steel complying with AS/NZS 2728:Type 4, is made from zinc-aluminium alloy coated steel complying with AS1397-2001, G550 (550MPa minimum yield stress), AZ150 (150g/m² minimum coating mass) or AZ200 (200g/m² minimum coating mass), or
• The base metal thickness is 0.42mm

Spanning Tables

The maximum recommended support spacings are based on testing in accordance with AS 1562.1-1992. Design and installation of sheet roof and wall cladding, and AS 4040.1-1992. Resistance to concentrated loads.**

Depending on support spacings used, LYSAGHT FLATDEK® II can be installed as either a:

• Light foot traffic roof (incidental maintenance foot traffic acceptable); or
• No foot traffic roof (will not support the weight of a person walking on it), this considers resistance to wind pressure only.

The pressure considered is based on a typical awning C_pn=-0.8 and K_l=1.5 adjacent to an enclosed structure.

The tables are based on FLATDEK® II fixed to supports of 1.0mm BMT minimum. For FLATDEK® II awnings applications, the awning span is often governed by the capacity of the receiver channel and its connections. This must be considered in the design of any awning system.

Spans for light foot traffic Maximum support spacings (mm)
Span type	Wind Classification to AS 4055
	N1 (W28)	N2 (W33)	N3 (W41N)	N4 (W50N)
Single End Internal	2400 2800 3200	2400 2800 3200	2400 2800 3200	2400 2800 3200
Spans for no foot traffic Maximum support spacings (mm)
Span Type	Wind classification to AS 4055
	N1 (W28)	N2 (W33)	N3 (W41N)	N4 (W50N)
Single End Internal Stiffened Overhangs	5100* 4800 4800 600	5100* 4800 4800 600	4500 3700 4450 450	3300 3000 3500 400

Supports must be not less than 1mm BMT.
* Spans of 5100mm may result in noticable deflections under maximum loads. When deflections need to be considered in designs, reduce these spans to 4800mm.

Capacity & Load Tables

The limit state wind pressure capacity table can be viewed in the LYSAGHT FLATDEK® II brochure. Download LYSAGHT FLATDEK® II Roof Cladding for Home Improvements - Queensland Only (745 KB).

This information is suitable for use only in areas where a tropical cyclone is unlikely to occur as defined in AS1170.2-2002.

Fastening Details

	Fixing to steel up to 0.75 mm BMT	Fixing to steel 1 to 3 mm BMT	Fixing to timber
Standard fixing	Self Drilling, self Tapping screws with hex. washer head & EPDM washer 10-12 x 20mm	Self Drilling, self Tapping screws with hex. washer head & EPDM washer 10-16 x 16mm	Self Drilling, long shank wood screws with hex. washer head & EPDM washer SOFTWOOD: 10-12 x 30mm HARDWOOD: 10-12 x 20mm
Higher weather-tightness	Self Drilling, self Tapping screws with hex. washer head 16mm x 0.9mm aluminium / EPDM bonded washer 12-11 x 25mm	Self Drilling, self Tapping screws with hex. washer head 16mm x 0.9mm aluminium / EPDM bonded washer 12-14 x 20mm	Self Drilling, long shank screws with hex. washer head 16mm x 0.9mm aluminium / EPDM bonded washer SOFTWOOD & HARDWOOD: 12-11 x 40mm

When fixing to LYSAGHT FIRMLOK™, tighten until washer is just gripped enough to give a weathertight seal. Don't tighten any more.

Fastener Location

Supports: 2 fasteners per sheet