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This striking cladding features slender, high ribs and broad, flat pans that make a dramatic statement on any structure. Using a concealed fixing system to maintain its clean lines, LYSAGHT LONGLINE® cladding can be tapered for a fan-like effect where curvilinear roofs require a tailored cladding solution.

Technical Specifications



Sheets are supplied custom cut to length. Minimum and maximum lengths apply. Please contact your nearest LYSAGHT® office for your region for more information.


+ 0 mm
- 15 mm


- Standard & Fluted:
+ 4 mm
- 4 mm

- Tapered:
+ 5 mm
- 5 mm

Material Specification

Next generation ZINCALUME® aluminium/zinc/ magnesium alloy coated steel complies with AS1397:2011 G550, AM125 (550 MPa minimum yield stress, 125 g/m2 minimum coating mass).

COLORBOND® steel is prepainted steel for exterior roofing and walling. It is the most widely used. The painting complies with AS/NZS 2728:2013 and the steel base is an aluminium/zinc alloy-coated steel complying with AS 1397:2011. Minimum yield strengths are G550 (550MPa), or G300 (300MPa) depending on profile. Minimum coating mass is AM100 (100g/m2).

COLORBOND® Metallic steel is prepainted steel for superior aesthetic qualities displaying a metallic sheen.

COLORBOND® Ultra steel is prepainted steel for severe coastal or industrial environments (generally within about 100-200 metres of the source). The painting complies with AS/NZS 2728:2013 and the steel base is an aluminium/ zinc alloy-coated steel complying with AS 1397:2011. Minimum coating mass is AM150 (150g/m2).

SuperDura™ Stainless steel is pre-painted steel and is used for severe and coastal environments. The painting complies with AS/NZS 2728:2013 and the steel base is a stainless steel complying with AISI/ASTM Type 430; UNS No. S43000.

As LONGLINE 305® has a flat pan finish with no flutes, the material can exhibit signs of oil canning. This can exist for all COLORBOND® steel colours but is potentially more visible in the darker COLORBOND® steel colours in the range. This can be seen in the finish of the product so designers need to make a professional judgement in its suitability for the application. Oil canning is not a structural defect simply an aesthetic issue. Please consult with the Lysaght technical enquiries team for advice.



* For tapered LONGLINE 305® contact your local Service Centre

Span Table

The maximum recommended support spacings are based on testing in accordance with AS1562.1-1992, AS4040.1-1992 and AS4040.2-1992. Supports must not be less than 1mm BMT.

Roof spans consider both resistance to wind pressure and light roof traffic (traffic arising from incidental maintenance).

Wall spans consider resistance to wind pressure only.

The figures relate only to buildings 10m or less in height and located in sheltered or exposed suburban areas or sheltered rural areas only, for further details Download LYSAGHT LONGLINE 305® Design and Installation Guide.

Maximum Support Spacings (mm)
Types of Span BMT (mm)
Single Span 1800
End Span 2000
Internal Span 2500
Unstiffened Eaves Overhang 150
Stiffened Eaves Overhang 450
End Span 2700
Internal Span 2700
Overhang 450

Disclaimer: Please note that all flat pan profiles can exhibit signs of oil canning under certain light conditions which can potentially be seen in the finish of the product. While this appearance can differ for all colours, it is typically more visible in darker colours. Oil canning is not a structural defect but simply an aesthetic issue. Designers should take this aspect into account upon selection and need to make a professional judgement on the profile suitability for the particular application. Please consult with LYSAGHT® technical team for any additional advice.

Capacity & Load Tables

The limit state wind pressure capacity table can be viewed in the LYSAGHT LONGLINE 305® brochure. Download LYSAGHT LONGLINE 305® Design and Installation Guide.

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

Roof Drainage Capacity

LYSAGHT® Roofing & Walling Installation Manual. - Chapter 2 Design Preliminaries - to view Table 2.14.1, Maximum Roof Lengths for Drainage.

Installation (ZENITH®)

Lysaght publishes detailed installation guides & demonstration videos for the LYSAGHT ZENITH™ architectural cladding range.

NCC of Australia Compliance

LYSAGHT® products comply with the National Construction Code of Australia (NCC).


Brochures & Catalogues

LYSAGHT® Residential Walling Brochure PDF(5.25 MB). Last updated 22 Nov 2023

LYSAGHT ZENITH™ Commercial & Industrial Brochure PDF(1.52 MB). Last updated 9 Feb 2023

LYSAGHT ZENITH® Range - Product Category Brochure PDF(4.6 MB). Last updated 24 Nov 2023


New South Wales & ACT
Northern Territory
Not Available
South Australia
Not Available
Not Available

Colour Range


  1. Basalt®
  2. Gully®
  3. Ironstone®
  4. Monument®
  5. Shale Grey™
  6. Surfmist®
  7. Wallaby®
  8. Windspray®
  9. Woodland Grey®


  1. Dune®
  2. Monument®
  3. Surfmist®
  4. Wallaby®
  5. Windspray®
  6. Woodland Grey®


  1. Basalt®
  2. Bluegum®
  3. Dune®
  4. Monument®
  5. Shale Grey™
  6. Surfmist®


  1. Aries™
  2. Astro™
  3. Celestian™
  4. Cosmic™
  5. Galactic™
  6. Rhea™

Unpainted Steel Range

  1. ZINCALUME® steel

COLORBOND® steel Studio Library

COLORBOND® steel Studio enables you to browse over 200 COLORBOND® steel colours. Search by RGB or HEX colour values or DULUX or RAL colour names to return the closest match from over 200 available colours.

The COLORBOND® steel colour swatches shown have been reproduced to represent actual product colours and finish as accurately as possible. However, we recommend checking your chosen colour against an actual sample of the product before purchasing, as varying light conditions and limitations of the printing process may affect colour tones and finish. All colours & finishes may not be available in all regions or for all profiles. To determine the most suitable material for your project, please contact your supplier or


Pricing for all our products varies based on availability and quantity.


Phone (Mon-Fri, 9AM-5PM AEST/AEDT):

1800 641 417

100 Years Celebration

LYSAGHT® products have been made in Australia for 100 years.