Effective cover: 710mm (approx)
Sheet width: 770mm (approx)
Grades: 0.40mm BMT G550, 0.55mm BMT G550 and G300
Minimum pitch: 3
Steelformers has the means of delivering lengths up to 16.2m long. Contact your nearest branch for further information.
Longer lengths can be delivered upon arrangement. Where long sheets are used, consideration must be given too:
*Delivery to site
*Site access for large vehicles and lifting equipment
Be sure to contact a Steelformers representative to check stock levels of your chosen colour prior to ordering.
FASTENERS AND FIXING
It is important to select the correct fasteners for your application. This information can be contained from one of the Steelformers sales representative or Konnect, our fastener supplier. The NZMRM Code of Practice also provides information selection, fixing methods and patterns according to wind zones. It is important to ensure the fasteners are class 5 minimum, their durability is at least equal to the durability of the material and all screws have a neoprene washer and in some cases a load-spreading washer and EPDM.
*Long spans may require the specification and use of side lap stitching screws
*Fixing aluminium roofing requires a 10mm oversized pilot hole
*Aluminium wall cladding can be pan fixed up to 8m, then crest fixed with washers and EPDMs for 4m (limited to a maximum of 12m)
RECOMMENDED FIXING PATTERNS
As per the current NZMRM Code of Practice, compliance with E2/AS1 is dependent on the purlin spacing and gauge of material.
Recommended fixing patterns for residential applications for 0.40mm BMT roofing iron is as follows:
Three fasteners per sheet (end and internal supports)
RECOMMENDED MAXIMUM SPANS
*Maximum spans for NC710 with a 1kN concentrated load of G550 steel
*These should be reduced in high foot traffic areas or positioned to suit specific locations i.e. windy areas
Installation must be completed by, or under the supervision of a Licensed Building Practitioner with the relevant license class.
Check out the NZMRM Code of Practice by clicking this link, for detailed installation guidelines.
BUILDING CODE COMPLIANCE
Past history and testing from Blue Scope New Zealand Steel and Pacific CoilCoaters on their products indicate that providing the correct product for the environmental conditions is used, NC710 installed in accordance with the NZ Metal Roofing and Cladding Manufacturers Association (NZMRM) Code of Practice, and maintained in accordance, will meet the performance criteria of the New Zealand Building Code. Note: The NZ Building Code durability requirements does not include aesthetic appearance.
Like all roofing and cladding products, Steelformers NC710 is subject to the cumulative effects of weather, dust and atmospheric debris. Careful and regular maintenance will extend the life of this product.
Click here to download New Zealand Steels Environmental Categories, Warranty and Product Maintenance recommendations.
For more information, check out the following links:
*New Zealand Steel: Technical Resources
*NZMRM: New Zealand Metal Roofing and Wall Cladding Code of Practice
*New Zealand Building Code: E2/AS1
Click the masterspec link below to view and/or download the most up to date Taranaki Steelformers work sections from masterspec website.
Because of Taranaki Steelformers’ policy of continuous product improvement, the company reserves the right, at any time and without notice to discontinue or modify designs, features and other specifications of their product. Taranaki Steelformers reserves the right to either temporarily or permanently withdraw any such product from the market without incurring any liability. Taranaki Steelformers disclaim any liability for loss or damage suffered from the use of such material as all information is correct to the best of our knowledge at the time of publishing. As this is only issued as a general guide, it should be not be treated as a substitute for detailed technical advice.
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