Corrugate


Corrugate is a popular age-old roofing profile that has been around for centuries. Corrugate is equally at home on light commercial as well as on modern residential dwellings.

Corrugate is an attractive flowing profile that has an appearance that has stood the test of time. It is available in continuous lengths so does not have unsightly end laps. Because of its width it is easy to install and is one of the more cost-effective roofing products available.

Corrugate clear sheeting is available in a matching profile in a variety of specifications. Recommended minimum pitch should be no less than 8 degrees. Maximum lengths should not exceed 12 metres.

Span Table Roof Walls
Internal End Internal End
Gauge Max Recommended Max Recommended
Steel .40BMT 1000mm 700mm 1200mm 800mm
Steel .55BMT 1500mm 1000mm 1600mm 1000mm
Aluminium .70BMT        
Aluminium .90BMT        

Base Materials
Corrugate is available in zinc coated and pre-painted steel in .40g and 55g (base metal thickness) and plain and pre-painted Aluminium .70g and .90g

Fasteners
Steeltite 12gx45mm and Timbertite 12gx50mm, Class 4 fixings compatible with the material being fitted.
Provision should be made for thermal expansion.

Foot Traffic
Foot traffic up the roof should be spread evenly over 2 crests on purlins. Foot traffic across the roof should be on purlins.


Durability
All materials should be checked for their compatibility and their warranties as to the suitability in the environment to which they will be exposed. Warranties must comply with the maintenance recommendations as set down by the material.

Design Details
For design details and best practice applications, please refer to NZ Metal Roofing Manufacturers’ Code of Practice.

Materials
Custom cut to length subject to available transport

Zinc Alloy Steel .40BMT AZ150 (150GM/M2) G550 Mpa Yield Stress
Zinc Alloy Steel .55BMT AZ150 (150GM/M2) G550 Mpa Yield Stress
Pre-painted Steel .40BMT AZ150 (150GM/M2) G550 Mpa Yield Stress
Pre-painted Steel .55BMT AZ150 (150GM/M2) G550 Mpa Yield Stress
Pre-painted Aluminium .70BMT 5052 305 Mpa Yield Stress
Pre-painted Aluminium .90BMT 5052 305 Mpa Yield Stress

Paint Finishes
ZinaCore – For general exterior roofing and cladding applications NOT suitable for use in severe or very severe marine environments
MagnaFlow – For general exterior roofing and cladding applications NOT suitable for use in very severe marine environments
AlumiGard – For general exterior roofing and cladding applications suitable for use in up to very severe marine environments

Installers
Only qualified approved roof installers should be used on your contract.
All installations should be to the standards as set out in the NZ Metal Roofing Manufacturers’ Code of Practice.