CORRUGATE
DESCRIPTION Corrugate is a proprietary metal profile roofing and wall cladding system manufactured by long-run roll forming processes and installed with screw fasteners to supports. It can be formed from a variety of substrates to meet durability, formability, and aesthetic requirements. This BPIS includes the profile along with associated fasteners and flashings supplied by the manufacturer.
SCOPE OF USEGenerally used for roofing and wall cladding, mansards, ceilings, fences and decorative screens, or any other cladding application.
LIMITATIONSMaterial selection must be commensurate with ambient environmental conditions. Contact with corrosive and incompatible materials, prolonged exposure to damp or corrosive internal environments, or excessive periods of wet stacking must be avoided. Minimum Pitch 8°
MATERIALS1. Metallic coated grade G300/G550 steel complying with AS 1397 type AZ 150 coating 2. Prepainted grade G300/G550 steel complying with AS 1397 coated in accordance to AS/NZS 2728 to Type 4 (Colorsteel Endura/Colorcote Zinacore) or Type 6 (Colorsteel Maxx/Colorcote MagnaFlow) specification.3. Unpainted or Prepainted H34/H36 aluminium (Colorsteel Altimate/Colorcote Alumiguard)
INSTALLATIONInstallation should be carried out by a suitably qualified practitioner in accordance with manufacturer’s recommendations and the Metal Roofing and Wall Cladding Code of Practice.
MAINTENANCEMaintenance must be carried out in accordance with the manufacturer’s recommendations. Unwashed areas must be regularly maintained to avoid the build-up of salt and debris.
COMPLIANCE WITH NZ BUILDING CODE (NZBC) Corrugate and associated flashings made from equivalent material, used in combination with fasteners, underlays and clear sheeting accredited by NZMRM as complying to their product performance standards, will contribute to meeting the following performance requirements of the NZBC:
NZBC B1 Structure Load/span testing and analysis in accordance with procedures described in Metal Roofing and Wall Cladding Code of Practice have led to the development of the following load span table
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For buildings designed to AS/NZS 1170, refer to manufacturer
NZBC B2 Durability
Durability in accordance with Table 20 E2/AS1Sea Spray Exposure B Low, C Medium, D High, E Severe MarineProduct Rain Washed Roofs Walls and Unwashed AreasZincalume or Galvanised B, C BColorsteel Endura/ Colorcote Alumiguard B, C, D B, CColorsteel Maxx/Colorcote MagnaFlow B, C, D, E B, C, DAluminium B, C, D, E B, C, D, E
NZBC C FireColorsteel Endura and Colorsteel Maxx are rated as a Group 1-S material when tested in accordance with ISO 5660:2002 Part 2
NZBC E1 Surface WaterCapacity Calculation in accordance with Metal Roofing and Wall Cladding Code of Practice calculators Minimum Pitch 80, rainfall intensity 150 mm/hrMaximum Run 22m Catchment area of spreader 17.65m2 10 m run, 4 holes in spreaderCatchment behind penetration 1.8m2 10m run, discharging each side of penetration
NZBC E2 External MoistureFlashing details should be in accordance with Franklin Long Roofing design details, Metal Roofing and Wall Cladding Code of Practice, E2/AS1, or E2/AS4. Alternative details complying with the “4 D’s” (Deflection, Draining, Drying and Durability) will also comply with the performance requirements of NZBC.
NZBC E3 Internal MoistureWhen used with an absorbent, permeable underlay complying with NZS 2295:2006, or Dridex pre-adhered fleece, Corrugate 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.
NZBC F2 Hazardous Building MaterialsCorrugate manufactured from metallic coated, prepainted metallic coated or pre-painted aluminium will meet the performance requirements of F2, 2.3.1.This building product is not subject to a warning or ban under the Building Act 2004.
NZBC B2 Durability
Durability in accordance with Table 20 E2/AS1Sea Spray Exposure B Low, C Medium, D High, E Severe MarineProduct Rain Washed Roofs Walls and Unwashed AreasZincalume or Galvanised B, C BColorsteel Endura/ Colorcote Alumiguard B, C, D B, CColorsteel Maxx/Colorcote MagnaFlow B, C, D, E B, C, DAluminium B, C, D, E B, C, D, E
NZBC C FireColorsteel Endura and Colorsteel Maxx are rated as a Group 1-S material when tested in accordance with ISO 5660:2002 Part 2
NZBC E1 Surface WaterCapacity Calculation in accordance with Metal Roofing and Wall Cladding Code of Practice calculators Minimum Pitch 80, rainfall intensity 150 mm/hrMaximum Run 22m Catchment area of spreader 17.65m2 10 m run, 4 holes in spreaderCatchment behind penetration 1.8m2 10m run, discharging each side of penetration
NZBC E2 External MoistureFlashing details should be in accordance with Franklin Long Roofing design details, Metal Roofing and Wall Cladding Code of Practice, E2/AS1, or E2/AS4. Alternative details complying with the “4 D’s” (Deflection, Draining, Drying and Durability) will also comply with the performance requirements of NZBC.
NZBC E3 Internal MoistureWhen used with an absorbent, permeable underlay complying with NZS 2295:2006, or Dridex pre-adhered fleece, Corrugate 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.
NZBC F2 Hazardous Building MaterialsCorrugate manufactured from metallic coated, prepainted metallic coated or pre-painted aluminium will meet the performance requirements of F2, 2.3.1.This building product is not subject to a warning or ban under the Building Act 2004.