Roof Replacement Estimate Cost: Australia 2022

Are you thinking about the need to replace your roof? Your home’s value and protection can be enhanced by replacing your roof, especially when it is getting a bit long in the tooth. You could go with a colorbond roof or something else – of course, a big issue is how much does it cost?

Below, we’ll explain what to expect and how to go about replacing a roof. An estimate based on the key roof replacement issues is the way to go here. The cost to replace a roof is not trivial, so being armed with info when you seek a cost estimate is important. Also, it is not something you should attempt yourself becasue it is a big project. You need a professional roof replacement service for this situation.

Most people consider roof replacement to be the most important home renovation project. A bad roof should be replaced as soon as possible. Even though it may seem expensive, putting it off usually results in a greater cost. The roof of a building may leak, causing electrical lines to be damaged or causing a structural collapse (possibly causing a fire).

It is common for Australians to be reluctant to replace their existing roof when it has been damaged or deteriorated over time. Many people still believe that installing new roofs is expensive and time-consuming, despite the evidence that they save money in the long run. Calculating the cost of a new roof requires consideration of several factors. There are so many variables to consider when planning to budget for a new roof to replace a leaking or damaged one.

Roof Replacement Cost Calculator Australia If You Want A New Roof

If you replace the roof, what will the estimated cost be? Cost varies, and is influenced by the following factors:

  • Your choice of roofing type
  • Amount of square meters on your roof.
  • Whether your roof slopes or inclines – the degree of pitch
  • What might the estimated labour cost?

In addition to steep pitches and asbestos cement, roofs that are hard to access will cost more to replace. Multiple pitch roofs, asbestos-cement roofs, and difficult-to-reach roofs may cost more to replace.

A larger roof will obviously require more money for roof replacement, so its size has a significant impact on roof replacement costs. You’ll have to climb up your home’s roof to reach the highest point depending on the style of your home’s roof. The workers may take greater risks while working on a steep slanting roof, which may cost you more money.

Roof Replacement Costs: How Does Your Existing Roof Material Affect Them?

You have to choose the right material for a new roof in order to determine its cost. A zinccalume or colorbond roof may be less expensive than a terracotta roof. As a result of their durability and long lifespan, metal shingles are more expensive than asphalt shingles. Replacement of metal roofs costs on average between $80 and $150 per square meter.

You should calculate how much it costs for a square meter of any roofing material if you are replacing your roof. Make sure you choose the right roofing material for your roof when receiving quotations from roofing contractors. You also need to keep in mind that the cheapest option is not necessarily the best option, since you want a roofing material that will last for many years without having to be replaced.

Should You Use A Roof Replacement Service Or DYI?

The materials are only one aspect of the cost. Your contractor will also charge you for labour. Depending on how long it takes for the workers to replace the old roof and install the new one, the roof replacement cost may vary from contractor to contractor. Roofing replacement costs are also affected by the complexity and design of the roof because a sloping roof is more complicated and dangerous to replace, resulting in a higher price.

You may be able to find cost calulators for roof replacement on some roofing contractors’ websites in Australia. Using this tool, you can simply fill in details about the roof’s height, slope, materials, and dimensions, and then get back an apprximate estimate what it will all cost. You can use that form to determine a rough estimate of the total roof replacement cost.

A professional roofing contractor is also knowledgeable about a wide variety of roofing materials. A professional roofer has more experience and knows how to install or repair a wide variety of roofs than an amateur. Existing metal skillion roofs or asbestos roof repairs or replacements are offered by some professionals and these are some of the cheapest roofing options available.

Calculate the cost of replacing a tile roof in Australia

A typical three-bedroom home may cost the following per square metre for colorbond roofing:

  • Using colorbond as a replacement of existing concrete tiles will cost $20,000.
  • Colorbond roof replacement cost is $20,000 to $15,000 for asbestos cement roofs
  • The cost of replacing an existing metal roof with Colorbond roofing ranges from $6000 to $10,000.

Here are some examples of further price estimates.

A reroofing job generally costs $4000 to $15000, when roof shingles need to be replaced.

The cost of reroofing a garage can range from $1,000 to $2,500 depending on the materials and pitch.

Roof replacement costs range from $4300 to $7600 for a house with shingles.

All Australian states and territories require roofers to be licensed. Depending on where you live, they may hold a specific roofing license such as a building license (Victoria), a roof tiling license (NSW), a roof cladding license (QLD), or a roof tiling license (NSW). Make sure the roofing contractor you choose has a valid license before you hire them. Ask the following questions as well:

  • Do you have Workers’ Compensation coverage while you work on the roof of my house?
  • Can you provide a written quote for the work you will do and the costs of the materials?
  • What is the warranty on roofing materials and workmanship?
  • Can I speak to other happy customers of your service?

Calculator For Re-Roofing A House

Reroofing costs are largely determined by the type of roofing material you choose. A concrete tile is considered to be the cheapest tile, followed by steel, clay, and stone tiles at the top. Your choice of roofing material can greatly affect the cost of your re-roofing project. Some roofing materials can cost as little as $40/m2 or as much as $500/m2.

In order to determine how much it will cost to reroof a house, your roof’s pitch is the most important factor. Installing a new roof is more difficult when the pitch is steep. During installation, a steep pitch complicates laying down tarps and protecting surrounding buildings and plants. The pitch of your roof can have a significant impact on the cost of reroofing. If your pitch is low (5:12), you may need to pay $50 per square metre, while if your pitch is high (18:12), you may have to pay as much as $250 per square metre.

The cost of reroofing varies from $4500 to 13000 based on the material you use and the size of your house. Flat roofs cost on average between $3000 and $4000 to repair. It is possible to obtain the same price for a bubble or puddled flat roof, while a flat roof that is freestanding starts at $9000. Metal coil leaks can cost from $500 and $1500 to repair, depending on their size and location. Because extreme weather wears down roofs faster, they eventually need to be replaced after around 20 years.

The Average Cost Including Labour

It costs about $50 per square metre to replace a roof with labour. As part of this cost, your roofer will perform the work and provide any necessary equipment to complete the job safely. There are various types of roofs that can cost more to replace, including asbestos cement roofs, steep roofs, bubble or flat flat roofs, and freestanding flat roofs.

Garage Roof Replacement Costs

In general, replacing an existing metal roof will cost you $500 per square metre. Garage pitch and surface materials affect cost. The cost of installing a metal roof is between $300 and $400 per square metre. It is important to note that metal roofs are extremely durable and can last for up to 50 years, so you won’t need to be concerned about the issue of reroofing your garage for many years to come. It costs approximately $1500-2500 to replace a flat roof, while $2500-3500 to install a steep metal roof.

Roof Replacement Reasons

The costs of roof replacement are much higher than those of roof repairs since an old roof might have a number of issues that would be solved by minor repairs. Despite this, you may need to replace your roof for several reasons if this doesn’t work, such as:

  • It is no longer feasible to replace your roof’s shingles or tiles. It’s best to reroof your house sooner rather than later if your roof has worn down over time.
  • It’s evident that much of the wooden structure supporting the roof is rotting. In order to prevent additional damage from occurring beneath your current roof, a new roof should be installed as soon as possible.
  • The last storm caused multiple leaks in your home. Your roofing system needs to be re-evaluated to ensure it’s working efficiently or isn’t aggravated by this.
  • Materials used in the construction of your home were of lower quality. Your house may not be adequately protected from extreme weather conditions if the materials used were not made to meet proper industry standards. Using an online calculator, you can estimate the cost of reroofing based on the size of your roof and its pitch. Your reroofing costs will be impacted by these factors, but material fees are not included in these figures.

Average Roof Material Cost Per Square Metre In Australia

So just how much does roof replacement cost? As new construction commences and the property market recovers, the average cost of a new roof is rising. There is also a growing skilled labour shortage since various flooding events have occurred recently in Australia during 2022. As a result, property owners with limited funds may find it difficult to repair or replace their roofs. So that property owners can properly plan their budget, it is important to know how much different types of roofs cost:

  • The average cost of Colorbond roofing is $18 to $37 per square metre
  • The average cost per square metre of concrete tiles is $40 to $65
  • The average cost of steel per square metre is $50 to $70
  • The average cost per square metre of corrugated metal is $50 to $70
  • The average cost of asphalt shingles is $65 per square metre
  • A square metre of Terracotta Tile costs approximately $80 to $110
  • A square metre of clay tiles costs on average $104
  • A square metre of timber costs on average $160
  • It costs around $230 and $320 per square metre to install solar roofing tiles
  • Per square metre, slate tiles cost between $200 and $500
  • The average cost of copper tiles is $260 per square metre

Signs A Roof Needs To Be Replaced

Roof replacement is most commonly caused by the overall age and structural integrity of the building surrounding it. Asphalt shingles and steel are materials that have a limited lifespan. In order to remain protected from extreme weather conditions, they may need to be replaced after some time. You may suffer extensive damage to your roof if you don’t install or maintain it properly if your home is in an area prone to high winds or heavy rainfall.

Stormy weather can also cause damage to your roof, which may require replacement. Before you can move forward with reroofing activities, you should get approval from the insurance company and hire professionals to make certain that all the work completed adequaltly meets regulations and industry standards. The design of your existing structure is another factor that may require roof replacement. Unless your current system supports and enhances its environment, upgrading it may not be cost-effective.

Roof replacements can be expensive but they are necessary to prevent your home from being damaged by weather conditions. When re-roofing your home, you should always get multiple estimates to make sure you are getting the best deal possible.


So How much does a replacement roof? The cost of new roof installation will be determined by many things. The size of the roof, roof replacement cost per square meter, if it is a metal roof replacement vs a flat roof will be part of determining costs.

The issue of removing your existing roof also comes into it. For example, asbestos roof replacements are much more expensive than the cost of removing a simple metal flat roof. In this way, The cost of existing roof materials and disposal are important factors.

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