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How Much Does a Colorbond Roof Replacement Cost?

Can you imagine a home without a roof? While the idea seems unique, a house can never be complete without sturdy roofing materials protecting those who live in it.

The top is like a security blanket that keeps us safe from the harsh weather and other elements. “It’s also an investment material and an essential part of the home because it can withstand the test of time, winds, extreme heat, heavy rains, and even storms.

Aesthetically speaking, the roofing is the crown of the house, so it’s ideal to consider the type and colour that will match the structure and design as a secondary consideration.

Colorbond roof cost per square meter varies from $53 to $97 for new residential homes, including materials and installation. Having a professional roofing contractor to perform the installation is always recommended.

You need a sturdy roof that protects your house from structural damage. Colorbond roof installers charge based on your roof’s size and other factors that affect the cost of installation.

Re-roofing your home, as the name suggests, involves replacing your roof, either because it’s past its use-by date or for aesthetic purposes. This is done by putting a new one over the old one (a not common practice) or removing the old one and replacing it with new (recommended).

If you’re on a tight budget, $12,000 is usually the minimum starting mark. Looking for a roof replacement? Check out Top Glaze for a wide range of roof services. 

Colorbond Roof Costs Based on Your Roofing Size

The cost of the Colorbond roof is relatively higher than other roofing materials such as concrete roof tiles.

Colorbond roof cost per square meter averages between $13 and $37, excluding labor.

Check the following price estimates of Colorbond roof sheets:

  • Regular corrugated iron sheets can cost about $13 to $18 per m2
  • Steel clad sheets can cost about $21 per m2
  • Powder-coated Colorbond can cost about $22 per m2
  • Double-sided Colorbond can cost about $24 per m2
  • Colorbond Ultra roofing can cost about $37 per m2

Note: Visit the nearest hardware store or Colorbond roofing suppliers to ask for accurate prices and available colours that suit your property needs.

Also, determining your house’s roof area is essential to calculate the total cost of roofing materials and labour. Here’s the projected cost of your Colorbond roofing project.

Roofing Size Estimated Colorbond Roofing Prices

  • 300 to 400m2 $15,900 to $38,800
  • 200 to 300m2 $10,600 to $29,100
  • 150 to 200m2 $7,950 to $19,400
  • 100 to 150m2 $5,300 to $14,550

*Confirm GST inclusion with your prospective roofing contractor.

If you’re unsure about your roof’s exact measurement, ask a local roof installer to assist you.

On another note, if a homeowner with 150 to 200 m2 roofing size is planning to have the existing roof replaced, here’s a rough guide to determine Colorbond roof installation costs along with replacement and material fees.

  • Asbestos cement roof conversion to Colorbond roof costs around $15,000 to $30,000
  • Terracotta tile roof conversion costs around $15,000 to $25,000
  • Metal terrace roof conversion costs around $7,500 to $15,000

Average Labour Cost of Colorbond Roofing

Roofing installers charge different rates depending on your State. Some charge an hourly rate of $50 to $80, but others base their pay on a per-square-metre basis, which can be around $40 to $60 across Australia. We have a wide range of Melbourne roof replacement services at Top Glaze.

See the table below for colour bond roof cost per square metre:

State Average Cost per M2

  • New South Wales-$55 to $60
  • Brisbane-$40 to $45
  • Queensland-$40 to $45

Note: The above prices are just ballpark figures and may vary depending on your roof dimension. The most convenient way to receive up to three quotes is to find a local metal roofing company to supply and install Colorbond roofing systems.

Colorbond Roofing Cost per Sheet

The cost of Colorbond steel sheets depends on the type of sheeting and its dimensions. Like with any product, the costlier sheet will have greater properties and features. For example, a single basic corrugated sheet will cost around $18.

A powder-coated sheet in a range of colours will cost you around $21. A double sided Colorbond sheet can cost up to $25. The most durable Colorbond sheets with the Ultra finish are priced at around $37 a sheet.

To help you understand more about Colorbond roofing, we provide the following ten quick tips below to help you make an informed decision.

Consider Your Building Plans

Before you begin to think about choosing Colorbond roofing, you must consider how you want your new roof to look. Remember, your new roof will need to blend in with the property’s exterior and comply with any regulations, property title requirements and local council regulations.

For example, you might have to install a roof with a particular pitch elevation, or there might be a restrictive covenant requiring your roof to have a tiled look.

Roof Replacement in Melbourne

Here are a few things you should consider:

  • How will your new roof look compare to the exterior design and landscaping of the property?
  • Are you replacing your roof, and are you limited by internal structural restrictions?
  • Do you want a pitched roof, flat roof or an inverted pitched roof?
  • Will your new roof design be practical and easy to maintain?
  • Are there any restrictive covenants or heritage overlays affecting your title?
  • Are there any local council restrictions or plumbing regulations that you need to comply with?
  • Have you consulted a licenced plumber?

Consult a Licenced Melbourne Plumber

You must consult a licenced plumber when you are considering the roofing of your property. A licenced plumber should install a roof, so it is best to have the plumber involved in planning discussions. Ensure the plumber is a part of all discussions with other tradespeople so that communications are fluid and all decisions have been transparently reached.

Why Choose Colorbond Roofing?

If you have considered choosing Colorbond roofing, and your expert tradespeople (including your plumber) has not suggested against it, here are a few helpful positives of Colorbond roofing: 

  • It has been tested in Australia’s harsh outdoor conditions and an advanced laboratory testing facility.
  • It undergoes strict corrosion testing, durability testing and application testing.
  • It is manufactured in accordance with the patented ACTIVATE® technology.
  • It is ideal for residential and commercial applications. It has been used on a number of public buildings.
  • It is compliant for use in bushfire prone areas and zones.
  • It offers superior thermal efficiency properties to help keep your property cool in sunny conditions and warm in cool conditions.
  • It has remarkable sustainable performance and is capable of withstanding Australia’s harsh climate for a long time.
  • It only requires cleaning with fresh water to help it maintain its look.
  • It is fabricated with five layers of protection and complies with Australian Standards (AS1397 and AS/NZS 2728).
  • Its simplistic design and features make it a popular choice for both classical and contemporary properties.

Available Colorbond Roofing Colours

Colorbond roofing is available in 22 classical and modern colours to suit various tastes, designs and plans. The colours have been chosen to reflect the trends in Melbourne in 2021 and to ensure that the colour choice will remain popular in the future.

Colorbond roofing is available in contemporary, classical, matt, and ultra colours. Colour brochures, pallets and swatches are available from the Colorbond website free of charge. Check out our range of roof restoration services here. 

Available Colorbond® Roofing Designs

Colorbond roofing is available in various designs. Before choosing the design, remember to consult your plumber, architect, engineer and builder. The plan will need to be practical so that it can be installed appropriately without any issues.

Available designs include corrugated (either round or square), rib and pan, panel-style, weatherboard-style, and more. It is important the design complies with regulations so that a building inspector does not fail the design and installation.

Consider the Cost of Colorbond® Roofing

The cost of Colorbond roofing will depend on the design and scale. Aside from the installation and other labour costs, Colorbond roofing is set at a reasonable price because it is more than just a metal roofing system. With all the positives listed above, Colorbond roofing sheets typically vary between $18 to $40 per sheet.

It is important to remember that your roof will keep you safe and secure from the outdoor environment for many years. Do not compromise on the roofing material and ensure that you invest in a quality roofing system such as Colorbond roofing.

Gutters, Fascia and Downpipes

Alongside your new Colorbond roof, you will also need to consider gutters, fascia and downpipes. This is all part of the roofing system because runoff water will need to pass through gutters and downpipes and flow into underground drains.

Your plumber will help you design the entire roofing system. Make sure you also consider the design and colour of your gutters, fascia and downpipes so that it suits your property’s exterior and new roof.


While the installation of your new roof will have a warranty given from the licenced plumber in accordance with plumbing regulations, the manufacture of the roof can also be guaranteed (i.e. against peeling, cracking, corrosion, etc.).

BlueScope does provide warranties for its steel roofing system. You can discuss suitable warranty options with your builder or plumber. If you are project managing the build yourself, make sure you have these discussions with your sales representative and ensure that you choose an appropriate warranty to suit your needs and requirements.

Cost to Install Colorbond® Roofing

In addition to the cost of Colorbond roofing, you will also need to consider the installation cost. Seek quotations and estimated from licenced plumbing professions. 

Professionally Installed

Your Colorbond roof must be installed by a licenced and professional plumber. In addition to the roofing, the associated parts such as the gutter, fascia and downpipes must also be installed by a plumber who will follow the appropriate and applicable plumbing regulations.

Following installation and a satisfactory building inspection and another testing (as required), your plumber will issue you with a plumbing certificate which will note the jobs that it has completed for your build. Among other installations and servicing, the roofing system installation will be noted. Keep this handy on file for future reference.

How to Install Colorbond Roof: Step by Step

Installing Colorbond roofing on the house, shed, or patio can be a DIY project, but it’s not a project for an unskilled do-it-yourselfer.

It’s essential that the roof is installed in line with Australian Standard AS 1562 – ‘Design and installation of metal roofing’. This is to ensure the roofing is installed correctly and won’t pose a danger in normal or extreme weather conditions.

Colorbond roof installation has six basic steps:

Step 1: Install Gutters, Fascias and Battens

Guttering and fascias should be installed first, which can be chosen to match your Colorbond roofing. You should then lay the battens on the trusses to support the roof.

Step 2: Install Sarking or Roof Blankets

Sarking (reflective foil laminate) or a foil-backed roof blanket should be laid before placing the roof sheets. This helps to insulate the roof and prevent rot and rust.

Step 3: Lay the Colorbond Roof Sheets

Install Colorbond roof sheets by lapping the sheets against the prevailing wind direction. If your roof has hips and valleys, these should be marked on the sheets and carefully cut using a power saw or metal shears.

Step 4: Attach the Roofing

Check that the roof sheets are correctly aligned at the gutter end, then fasten the roof in place. This may involve drilling or using the provided fixings.

Step 5: Install Cappings

When the roofing is secured, bend the valleys upwards and install cappings across the roof ridge, hips and fascias.

Step 6: Clean the Roof

Carefully clean the roof using a broom or leaf blower to remove swarf. These tiny fragments of metal can cause a roof to quickly corrode if they are not removed.

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