Corrugated roofing sheets
Corodek® steel roofing
Product Overview
Corrugated metal roofing is Australia’s classic roofing profile. It’s the distinctive, wavy pattern you see on rooftops across the country. One of our nation’s most popular and cost-effective roofing solutions, it’s suitable for everything from residential homes to large rural sheds found on farms, warehouses, and industrial premises.
The corrugated profile is robust, durable, and expedites water runoff, making it ideal for Australian conditions. Available in both COLORBOND® (pre-painted) and ZINCALUME® steels, it delivers the perfect balance of strength, resilience, affordability, and authentic Australian style.
Perfect for:
- Residential homes & extensions
- Sheds, garages, & workshops
- Carport, pergola, verandah, porch, patio roofing
- School halls and covered areas
- Park/picnic area shading
Technical Specifications
Profile
Standard sheet widths
Available lengths
Material thickness
Minimum roof pitch
Australian standards
Maximum end spans
Corodek Data Sheet
Download PDFMaterial Options
What makes COLORBOND® steel special?
Key benefits:
- Wide colour range
- Superior corrosion resistance
- 15 to 36 year product warranty*
- UV-resistant coating
- No need for repainting
- Australian-made by BlueScope® Steel
What is ZINCALUME® steel?
Key benefits:
- Exceptional corrosion-resistance
- Excellent longevity in most conditions
- Park/picnic area shading
Complete System
Roofing Sheets
- Roofing sheets in your chosen material and length
- Calculate your requirements based on your roof area plus 10% allowance for wastage
Fixings & Fasteners
- Roofing screws (weather sealed)
- Hex Head Type 17 Screw with EPDM Washers for timber supports
- Allow 8-10 screws per square metre of roof area
Ridge Capping & Flashings
- Ridge capping for rooftop peaks
- Barge flashings for gable ends
- Apron flashings for wall junctions
- Valley gutters for roof valleys
Guttering System
- Quad or fascia gutters (half round or flat back)
- Downpies & brackets
Support Structure
- Purlins/battens (if not existing)
- Appropriate spacing to suit the corrugated profile
DIY Installation
Tools You’ll Need
- Cordless drill with hex bits
- Measuring tape and chalk line
- Metal-cutting circular saw or angle grinder
- Ladder or scaffolding
- Safety equipment (harnesses, anchors, non-slip footwear, eye protection)
Safety First
Installation Overview
IMAGE CREDIT: https://colorbond.com/inspiration/gallery
Builder: Saltbox Building | Designed by Rama Architects
Measure & plan
Calculate how many sheets you need. Mark purlin positions.
Prepare the structure
Install purlins and roof batterns, ensure they are correctly spaced and level.
Add guttering
Complete the rooftop water management system, including downpipes.
Install roofing sheets
Begin at one end, overlap sheets correctly, and maintain straight lines.
Secure sheets
Use the appropriate screws in the correct positions.
Install flashings
Seal all joints and roof penetrations.
Wash down
Thoroughly wash down to clean off swarf (metal shavings)
Frequently Asked Questions
Corrugated roofing offers a classic, stylish aesthetic to any rooftop and delivers in terms of strength, durability, ease of installation, and low maintenance. It is a sustainable, energy-efficient system that helps maintain a comfortable temperature indoors, and it facilitates rapid water runoff and drainage.
Corrugated roofing can last up to 70 years. When made from premium COLORBOND®, your roof will typically last between 40 and 70 years; ZINCALUME® can last from 30-40 years or, under ideal conditions, up to 60 years.
COLORBOND® Steel is backed by the Bluescope Steel Warranty for 15 to 36 years. Exact coverage varies by location, product type and other factors. See here for more information.
ZINCALUME® steel is silver-coloured, and features a protective aluminium-zinc-silicon alloy coating. It can be painted.
COLORBOND® is pre-painted ZINCALUME® available in a wide array of colours.
Most standard corrugated roofing requires a minimum pitch of 5 degrees; this ensures proper drainage and helps prevent leakage and ingress at the seams. Trimclad® roof sheeting, however, allows for a minimum pitch of just 2 degrees.
You’ll need to calculate your roof’s total area (via measurement – tip: sketch the roof, break it into smaller sections, measure and add these up), determine the area of each of your chosen roofing sheets, and divide the entire roof area by the area of a single sheet. Round up and add a 10% allowance for overlap/wastage/error.
ZINCALUME® corrugated roofing comes in a standard grey colour; this sheeting can be painted. COLORBOND® corrugated roofing is available in 22 steel core classic and contemporary colours. There are also 6 colours available in a premium matt finish.
It’s simple! Just get in touch with us to get the ball rolling.