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If you are looking for a bold, powerful roofing and cladding profile then LT7 should be your choice. Designed for applications where protection from severe climatic conditions and maximum structural economy is required, the strong section properties of LT7 allow for wider purlin and girt spacings which add extra economy to building projects. LT7 is particularly noted for its aesthetic appeal which was emphasised in its use on the Wellington Stadium as shown above. It also has excellent water shedding characteristics as well as being perfect for low pitch roofs.

889mm Sheet Width: 933mm

Minimum Pitch 3° (approx 1:20)




Thickness End Span Internal Span
0.40mm 1.20m* 1.80m*
0.55mm 1.90m* 2.90m*

* To suit ultimate wind loads up to 2 kPa

Thickness End Span Internal Span
0.40mm 2.00m 3.00m
0.55mm 3.00m 4.50m

Note: Spans shown above are for steel. When using other materials please call 0800 DIMOND for more info.

All roofing spans shown are maximum spans to suit occasional foot traffic only. Not suitable for use as a platform for maintenance work.

Download Full Overview

PDF 138 KB

Download Specification Document

PDF 171 KB
Durability Performance and Warranty PDF 211 KB

For comprehensive information on Dimond systems which include CAD drawings, Installation documents and PDF downloads, use one of the following links below

Dimond Roofing & Cladding Systems Manual
Dimond Roofing & Cladding Systems Manual
Dimond Structural Systems Manual
Dimond Structural Systems Manual

Download a lite version of the Roofing & Cladding Systems Manual (PDF - 2.9MB)

Download Roofing/Cladding installation Info (PDF - 560KB)

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Dimond is a member of the Roofing Association of New Zealand Roofing Association NZ

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