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Dimond LT7

LT7 is a bold, powerful roofing and cladding profile 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.

Key Features
  • LT7 is particularly noted for its aesthetic appeal that was emphasised in its use on the Wellington Stadium  
  • Excellent water shedding characteristics as well as being perfect for low pitch roofs
Green Tag Certified
Green Tag Certified
Scope of Use
  • Cover: 889mm 
  • Sheet Width: 933mm
  • Minimum Pitch 3° (approx 1:20)
  • All roofing spans are shown as maximum spans to suit occasional foot traffic only
Limitations on Use

Not suitable for use as a platform for maintenance work.

Statement of Building Code Compliance

Test information available from Pacific Coilcoaters and BHP NZ Steel, and past history of use of long run metal roofing and cladding products in New Zealand indicate that, provided the product use and maintenance is in line with the guidelines contained in the current literature referenced, Dimond long run metal roofing & wall cladding systems can be expected to meet the performance criteria in clause B2 and E2 of the New Zealand Building Code, for a period of not less than 15 years.

In-Service History

Dimond is New Zealand's largest manufacturer of steel roofing, cladding, structural and rainwater goods.

LT7 is particularly noted for its aesthetic appeal that was emphasised in its use on the Wellington Stadium.  

Other Performance Attributes

Green Tag:

  • All Dimond Roofing products roll-formed using ColorCote painted steel coil is Global GreenRate GreenTag certified and is applicable for Green Star and Home Star credits

Span Capacity 

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

*To suit ultimate wind loads up to 1.5 kPa

Cladding Span Capacity
Thickness  End span  Internal span
0.40mm 1.60m 2.40m
0.55mm 1.90m 2.90m

*To suit ultimate wind loads up to 2kPa

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

B2 Durability compliant
E2 External Moisture compliant
External Moisture
Product Technical Statement
Dimond Roofing & Cladding Technical Manual
Environmental Information
Specification Clause (Masterspec)
Installation and Operation
Colour Range
Additional Information

Dimond Roofing are a manufacturer of steel roofing, cladding and rainwater products.

Product Enquiries

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