Compliance Statement
Scope of Use
Pre-Curved sheeting allows for complex curved designs that complement both traditional homes and modern architecture. Factory pre-curved to your requirements in high quality CGI Curving sheet by Stratco in a variety of forms including concave, convex, bullnose and barrel vault designs.
New Zealand Building Code (NZBC)
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
- Clause B1 Structure: Performance B1.3.1, B1.3.2, B1.3.3, B1.3.3(b), B1.3.3(c), B1.3.3(f), B1.3.3(g), B1.3.3(h), B1.3.3(j)
Clause B1 Structure: B1.3.1, B1.3.2, B1.3.3 (b, c, f, g, h, j), B1.3.4
Span tables are in accordance with AS/NZS 1170.2:2002 and based on a maximum overall building height of ten metres and a 500 year design return period for strength limit state wind load assessment. Roofing spans specified are suitable for snow loading up to 2kPa in accordance with the New Zealand Metal Roof and Wall Cladding Code of Practice. - Clause B2 Durability: Performance B2.3.1, B2.3.1(b)
Durability in accordance with Table 20 E2/AS1
Rain Washed Roofs
Colorsteel Endura / Colorcote Zinacore
B, C, D
Colorsteel Maxx / Colorcote Magnaflow
B, C, D, E
Colorsteel Altimate / Colorcote Alumiguard
B, C, D, E
Walls and Unwashed Areas
Colorsteel Endura / Colorcote Zinacore B, C
Colorsteel Maxx / Colorcote Magnaflow C, D
Colorsteel Altimate / Colorcote Alumiguard B, C, D, E - Clause C3 Fire affecting areas beyond the fire source: Performance C3.5, C3.6, C3.7
Zinc/alum coated steel, Colorsteel and Colorcote products are rated as a Group 1-S material when tested in accordance with ISO 5660:2002 Part 1 & Part 2
- Clause E1 Surface water: Performance E1.3.2
CGI Corrugated carrying capacity - Refer Stratco BPIR - www.stratco.co.nz/siteassets/pdfs/bpis/stratco-cgi-corrugated-building-product-information-sheet.pdf
Capacity Calculation in accordance with NZ Metal Roofing and Wall Cladding Code of Practice calculators
- Clause E2 External moisture: Performance E2.3.1, E2.3.2, E2.3.7
The versatility of CGI Corrugated lends itself to a wide range of details for any application. Standard design details can be accessed from the web: www.stratco.co.nz/nz/roofing-and-walling/cgi-corrugated-cladding/
Alternative details may comply with solutions for corrugated roofing found in E2/AS1, or comply with the 4 “D’s” Deflection, Draining, Drying and Durability.
- Clause E3 Internal moisture: Performance E3.3.1
When used with an absorbent, permeable underlay, complying with NZS 2295 2006, CGI Corrugated will contribute to compliance with NZBC E3.3.1. Ceiling spaces of sarked roofs, skillion roofs, barrel curved roofs, flat roofs and roofs over moisture laden environments must have provision for adequate ventilation.
- Clause F2 Hazardous building materials: Performance F2.3.1
CGI Corrugated manufactured from Zinc/alum coated steel, Colorsteel, Colorcote or pre-painted aluminium will meet the performance requirement of F2.3.1.
- Clause G12 Water supplies: Performance G12.3.2, G12.3.2(a), G12.3.2(b), G12.3.2(c)
Colorsteel and Colorcote tested in accordance with AS/NZS 4020:2005 passed the requirements for products in contact with drinking water.
Evidence
The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:
NZ Metal Roofing Manufacturers Association Inc. (NZMRM Code of Practice) www.metalroofing.org.nz/cop
NZ Steel www.colorsteel.co.nz/resources/downloads-and-brochures/
Pacific Coilcoaters www.colorcote.co.nz/technical-information/
Supporting evidence provided where requested will apply to the product substrate supplied for the specific project.
The Wind Capacity Tables are based on testing in accordance with AS1562.1-1992 and AS4040.0, 1 & 2-1992. Span tables have been developed by determining wind pressures in accordance with AS4055-2006 for domestic applications and AS/NZS 1170.2:2002 for all other applications.
Design requirements
Roof pitch minimum 8°
Effective cover - 0.40mm 760mm, 0.55mm 750mm
Specify material coating to suit building location/environment
Unpainted metallic coated steel, COLORSTEEL®, including Matte, and ColorCote standard colour ranges - availability and minimum quantities may apply
Stratco flashing details for roofing and wall cladding to be used to meet NZ Building Code, E2/AS1 and NZ Metal Roofing Manufacturers Code of Practice
Allow for thermal expansion of CGI Corrugated, particularly in darker colours
Purlin spacing not to exceed maximum spans as per CGI Corrugated span tables
CGI Corrugated wall cladding can be direct fixed vertically but must use drainage cavity batten when fixed horizontally
Ensure compatibility when using CGI Corrugated roofing/wall cladding with other metal products such as copper to prevent accelerated corrosion
Installation requirements
Packs of CGI Corrugated sheeting should always be kept dry and stored above ground level on site. If the sheets have become wet, they should be separated, wiped and placed in the open to dry.
CGI Corrugated sheets should be laid lapping to sit neatly on the preceding roof sheet.
Cut pre-painted steel material by shear only — use nibblers or hand shears. Friction blades and high-speed saw blades must not be used on metal cladding.
Black lead pencils must never be used for marking aluminium/zinc, and unpainted or pre-painted steel products. Use a pencil of any colour other than black, a marker pen, or crayon.
For full installation details refer: www.stratco.co.nz/siteassets/pdfs/bpis/stratco-cgi-corrugated-building-product-information-sheet.pdf
Maintenance requirements
All roofing and cladding products are subject to the cumulative effects of weather, dust and other deposits so the performance and durability of CGI Corrugated roofing and wall cladding over time depends on its correct maintenance. For roofing, normal rain washing will remove most accumulated atmospheric contaminants from the top side of roofs.
Areas that do not receive adequate rain washing (known as unwashed areas) require more extensive manual washing.
Roofing and cladding products should be manually washed by either water and a sponge or a soft nylon-bristled brush or by water blasting at pressures of no more than 20MPa. Never use abrasive or solvent based cleaners such as turps, petrol or kerosene.
Manufacturer
Legal Trading Name:
Stratco
Business Email:
technical@stratco.co.nz
Company Website:
www.stratco.co.nz
Contact Number/s:
03 3389063
0800 787282
Product Identifier
CGI CORRUGATED CURVING
Warnings
This product has no warnings associated with it.
 |
Date last validated:
30 April 2024 |
 |
Date last updated:
30 April 2024 |
|