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Topspan is a high rib roofing profile that combines wide coverage with long span capabilities. It has a curved rib top and a bold shape, allowing Topspan to achieve economy, style and ease of installation. Topspan is ideal for large commercial and industrial applications and the profile is also readily available in Dimond’s range of natural lighting systems.
Dimond long run metal roofing and cladding is intended for use in constructing the building envelope for commercial buildings and residential buildings subject to the limitations listed below.
Attention to the following details is required to ensure the expected system performance is achieved:
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.
Dimond is New Zealand's largest manufacturer of steel roofing, cladding, structural and rainwater goods.
For over forty years Dimond has been an industry leader in innovation, product development, technical backup and distribution excellence.
Green Tag:
Thickness | End span | Internal span |
0.40mm | 2.00m | 3.00m |
0.55mm | 2.90m | 4.30m |
*To suit ultimate wind loads up to 1.5 kPa
Thickness | End span | Internal span |
0.40mm | 2.40m | 3.70m |
0.55mm | 3.30m | 5.00m |
*To suit ultimate wind loads up to 2.0 kPa
Dimond Roofing are a manufacturer of steel roofing, cladding and rainwater products.
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