Roof Replacement Cost in Australia 2026 — Full Breakdown
If your roof has hit the 30-year mark, leaks keep coming back after every patch job, or there is visible sagging when you look up from the street, it is probably time for a full replacement. A reroof is one of the bigger spends you will make on a home — but it is also one of the best investments. A new roof protects everything underneath it for the next 30 to 50 years.
The short answer for 2026: a full roof replacement on a standard Australian home costs between $15,000 and $45,000 inc. GST, depending on the material you choose, the size and pitch of the roof, whether the old roof contains asbestos, and how much structural work is needed underneath. Colorbond steel sits at the more affordable end, while terracotta tile is at the premium end. For a ballpark tailored to your roof, try the free roofing quote calculator — takes 30 seconds, no signup.
This guide breaks down the per-square-metre rates by material, what old roof removal costs, the extras that catch people off guard (sarking, insulation, gutters, structural upgrades), and when asbestos makes the whole job more complex. All prices are national averages — metro areas like Sydney and Melbourne tend to sit at the higher end, while regional areas can be 10 to 20 per cent cheaper on labour.
Important note: all prices in this guide are indicative only and include GST. Your roofer will confirm the final price after inspecting the job — every roof has its own quirks.
New roof cost per square metre by material
This is the core of what you will pay. The table below covers supply and installation of the new roofing material, including battens, fixings and standard flashings. It does not include old roof removal, sarking or structural work — those are covered separately below.
| Material | Cost per m² (supply + install) | Typical 180m² roof total | Lifespan |
|---|---|---|---|
| Colorbond steel | $70 – $110 | $12,600 – $19,800 | 30 – 50 years |
| Zincalume steel | $60 – $95 | $10,800 – $17,100 | 25 – 40 years |
| Concrete tile | $80 – $120 | $14,400 – $21,600 | 40 – 60 years |
| Terracotta tile | $90 – $140 | $16,200 – $25,200 | 50 – 80 years |
| Slate (natural) | $200 – $400 | $36,000 – $72,000 | 75 – 100+ years |
Colorbond is the most popular choice for reroofs across Australia in 2026. It is lightweight (about 5 kg/m² versus 50 kg/m² for concrete tiles), handles extreme weather well, and comes in a wide colour range. The lighter weight also means your existing frame and battens may not need reinforcement — which saves money.
Concrete tile is a solid mid-range option. It is heavier than metal, which means better sound insulation in rain, but the weight can be an issue on older frames. Concrete tiles are also more prone to cracking over time compared to terracotta.
Terracotta tile is the premium pick. It holds colour for decades without fading, offers excellent thermal mass (keeps the house cooler in summer), and will outlast the mortgage by a long stretch. The trade-off is cost and weight — your frame needs to be in good shape to carry it.
If you are not sure whether your roof needs a full replacement or if a restoration could buy you another decade, the roof restoration cost calculator is worth checking first.
Old roof removal costs
Before the new roof goes on, the old one has to come off. The cost of stripping and disposing of the existing roof depends on the material and whether it contains asbestos.
| Old roof material | Removal cost per m² | Typical 180m² roof |
|---|---|---|
| Colorbond / metal sheeting | $15 – $25 | $2,700 – $4,500 |
| Concrete tiles | $20 – $35 | $3,600 – $6,300 |
| Terracotta tiles | $20 – $35 | $3,600 – $6,300 |
| Asbestos cement sheeting | $50 – $90 | $9,000 – $16,200 |
Tile removal is more labour-intensive than metal. Each tile has to come off individually, stacked on pallets and craned down. Metal sheeting comes off in large panels, which is faster.
Asbestos cement roofs — the big cost factor
If your home was built before 1990, there is a real chance the roof contains asbestos cement sheeting (often called "fibro" or "super six"). This is common across older Australian suburbs and it changes the cost equation significantly.
Asbestos removal is not a DIY job and it is not something a regular roofer can handle. You need a licensed asbestos removalist (Class B licence for bonded/non-friable asbestos, which is what most roofing sheets are). The removalist will set up containment, wet the material to prevent fibre release, carefully remove and wrap each sheet, and dispose of it at a licensed facility.
The removal alone adds $9,000 to $16,200 on a typical home, on top of the cost of the new roof. It is a big hit to the budget, but there is no way around it — leaving deteriorating asbestos in place is a health risk and will be flagged on any building inspection when you sell. Use the asbestos removal cost calculator to get a more specific estimate for your roof area.
Extras that add to the total
The per-m² rate for the new roofing material is only part of the story. Here are the common extras that push the final bill higher — and most of them are either mandatory or strongly recommended.
| Extra | Cost range | Notes |
|---|---|---|
| Sarking (reflective foil membrane) | $8 – $15 per m² | Required under BCA for new roofs in most climate zones. Adds weather protection and thermal performance. |
| Roof insulation (batts) | $12 – $25 per m² | R4.0 to R6.0 batts depending on climate zone. Reroofing is the cheapest time to install or upgrade insulation. |
| Gutter replacement | $30 – $60 per lineal metre | If your gutters are 20+ years old, replace them while the scaffold is up. Saves a separate job later. |
| Fascia and barge board replacement | $40 – $80 per lineal metre | Often rotten or damaged on older homes. Cannot install new gutters on rotten fascia. |
| Structural upgrades (battens, rafters) | $1,500 – $8,000+ | If switching from lightweight metal to heavy tiles, or if existing battens are sagging or termite-damaged. |
| Scaffolding | $1,500 – $4,000 | Included in most quotes, but check. Two-storey homes and steep pitches cost more. |
| Skylights (new or relocated) | $800 – $2,500 each | Much cheaper to install during a reroof than retrofitting later. |
| Whirlybirds / roof ventilation | $150 – $350 each | Helps with moisture and heat buildup in the roof cavity. |
Sarking — do you really need it
Yes. Under the Building Code of Australia (BCA), sarking is required for new metal roofing in most climate zones. Even for tiles, it is strongly recommended. Sarking acts as a secondary weather barrier if water gets past the outer layer, reflects radiant heat downward in summer, and prevents condensation dripping onto your ceiling. At $8 to $15 per m², it adds $1,400 to $2,700 to a 180m² roof — money well spent.
Insulation — do it now or regret it later
A reroof is the single best time to install or upgrade ceiling insulation. The old roof is off, the ceiling cavity is fully exposed, and your roofer or insulation crew can lay batts quickly and evenly without crawling through a hot, cramped space. If your current insulation is old, compressed or below the recommended R-value for your climate zone, this is your chance to sort it. Check the insulation enquiry calculator for a quick estimate.
Gutters — while the scaffold is up
Replacing gutters as a separate job means paying for scaffold hire twice. If your gutters are older than 20 years, dented, rusted or pulling away from the fascia, get them done at the same time as the reroof. A full gutter replacement on a standard home runs $2,500 to $5,000. The gutter replacement cost calculator can give you a more specific number.
Total reroof cost — putting it all together
Here is what a full roof replacement looks like when you add up every component, using a typical 180m² Australian home as the example.
| Component | Budget Colorbond reroof | Mid-range Colorbond reroof | Premium terracotta tile reroof |
|---|---|---|---|
| Old roof removal (non-asbestos) | $2,700 | $3,600 | $4,500 |
| New roofing material + install | $12,600 | $16,200 | $25,200 |
| Sarking | $1,440 | $2,000 | $2,700 |
| Insulation upgrade | — | $3,600 | $4,500 |
| Gutter replacement | — | $3,000 | $4,500 |
| Fascia repairs | — | $1,500 | $2,500 |
| Scaffolding | Included | Included | Included |
| Total | $16,740 | $29,900 | $43,900 |
Add $9,000 to $16,000 on top if the old roof contains asbestos. A budget Colorbond reroof with asbestos removal lands around $26,000 to $33,000.
These are ballpark figures. Your actual quote will depend on your specific roof size, pitch, location, access conditions and the state of the existing structure. For a quick personalised estimate, the roofing quote calculator will get you in the right range.
What affects roof replacement cost the most
Five things move the needle more than anything else.
1. Material choice
This is the biggest single variable. Colorbond at $70 to $110 per m² versus terracotta at $90 to $140 per m² does not sound like a huge gap, but multiply it across 180m² and the difference is $3,600 to $5,400 on material alone — before you factor in the heavier frame requirements for tile.
2. Asbestos
If the old roof is asbestos cement, your removal cost roughly doubles compared to standard metal or tile removal. There is no shortcut here — it has to be done properly by a licensed removalist, with air monitoring, wrapping, and disposal at an approved facility. This is non-negotiable.
3. Roof size and pitch
A steeper roof means more square metres of surface area for the same house footprint, plus slower, more dangerous work. A 15-degree pitch might have 10 per cent more area than a flat roof; a 35-degree pitch could have 20 per cent more. Steep pitches also require more safety equipment and sometimes crane access for materials.
4. Access and location
Inner-city terraces with party walls, houses on steep blocks, homes surrounded by large trees — all of these add time and cost. Two-storey homes need taller scaffolding. Regional and rural properties may attract a travel surcharge for the crew.
5. Structural condition underneath
If the battens, rafters or trusses are damaged (by termites, rot or age), they need repair or replacement before the new roof goes on. Minor batten replacement might add $1,000 to $2,000. Major rafter work or truss reinforcement can push into $5,000 to $8,000 territory. There is no way to know until the old roof comes off and the structure is exposed — a good roofer will flag this risk upfront and include a provisional allowance in the quote.
How to choose the right roofing material
The right material depends on your priorities, your budget, and what the existing structure can support.
Choose Colorbond if:
- You want the best value for money.
- Your frame is older or lighter gauge and you do not want to pay for structural reinforcement.
- You are in a bushfire-prone area (BAL rating) — metal roofing is preferred or required.
- You want a modern, clean look with a wide colour palette.
Choose concrete tile if:
- You want better sound insulation than metal (rain noise on Colorbond is real).
- You prefer the look of a traditional tile roof.
- Your frame and trusses are engineered for the weight.
- You are comfortable with a moderate budget.
Choose terracotta tile if:
- You want a roof that will last 50 to 80 years with minimal maintenance.
- Colour retention matters — terracotta holds its colour far better than concrete tile or painted metal.
- You are building or renovating a high-end home where the roof is a design feature.
- Budget is less of a constraint.
For a broader look at roofing options, explore the full roofing calculators section.
Frequently asked questions
Q: How much does a full roof replacement cost in Australia in 2026?
A: A full roof replacement on a standard Australian home (around 180m² of roof area) costs between $15,000 and $45,000 inc. GST in 2026. A budget Colorbond reroof starts around $16,000 to $20,000. A mid-range Colorbond job with new gutters, sarking and insulation sits around $28,000 to $35,000. A premium terracotta tile reroof runs $40,000 to $50,000. Add $9,000 to $16,000 if the old roof contains asbestos. Get a personalised estimate with the roofing quote calculator.
Q: How much does a Colorbond roof cost per square metre in 2026?
A: Colorbond roofing costs $70 to $110 per m² for supply and installation in 2026. This covers the Colorbond sheeting, battens, standard flashings and fixings. It does not include old roof removal ($15 to $35/m²), sarking ($8 to $15/m²), insulation, gutters or structural work. On a 180m² roof, the Colorbond material and install alone runs $12,600 to $19,800.
Q: How long does a roof replacement take?
A: A standard reroof on a single-storey Australian home takes 3 to 7 working days, weather permitting. Day one is usually stripping the old roof. Days two and three cover any structural repairs, sarking and battening. The remaining days are for installing the new roofing material, flashings and ridge capping. Two-storey homes, complex roof shapes and asbestos removal can extend the timeline to 2 to 3 weeks.
Q: Does my home need a new roof or can it be restored?
A: If your roof is under 30 years old, the frame and battens are sound, and less than 10 per cent of tiles are cracked or damaged, a restoration is usually the better option — it costs a quarter to a third of a replacement and buys you another 10 to 15 years. If the roof is over 30, showing structural sag, has widespread tile failure, or contains asbestos, replacement is the way to go. Read our roof restoration cost guide for a detailed comparison.
Q: Is sarking mandatory for a new roof in Australia?
A: Under the Building Code of Australia (BCA), sarking is required for new metal roofing installations in most climate zones. For tile roofs, it is strongly recommended but not always mandatory depending on the climate zone and council requirements. Sarking acts as a secondary weather barrier, prevents condensation, and adds thermal performance. At $8 to $15 per m², it is a small addition relative to the total cost and well worth including regardless of the minimum requirements.
Q: How do I know if my roof has asbestos?
A: If your home was built before 1990, there is a good chance the roof contains asbestos cement sheeting. It was commonly used in corrugated roofing sheets, flat panels and eaves. Do not try to test it yourself — have a licensed asbestos assessor take a sample and send it to a NATA-accredited lab. Testing costs $150 to $400. If confirmed, the material must be removed by a licensed removalist before any new roof goes on. Use the asbestos removal cost calculator for a cost estimate.
Q: Can I change from tiles to Colorbond during a reroof?
A: Yes, and it is one of the most common material switches during a reroof. Switching from concrete or terracotta tiles (around 50 kg/m²) to Colorbond (around 5 kg/m²) dramatically reduces the load on your frame and trusses. In most cases, the existing structure can handle the lighter material without modification, which saves on structural upgrade costs. The main consideration is aesthetics and any heritage overlay requirements if your home is in a heritage conservation area.
Q: How many quotes should I get for a roof replacement?
A: Get at least three quotes from licensed roofers. Compare the scope of work (not just the total price) — check what is included for old roof removal, sarking, insulation, gutters and structural allowances. Ask each roofer what coating or material brand they use, what warranties are offered (manufacturer and workmanship separately), and whether scaffolding is included. The cheapest quote often excludes items that the mid-range quotes include, so read the fine print before you decide.
Get your reroof sorted
A new roof is not something you want to put off until the next big storm forces your hand. Water damage to ceilings, timber frames and electrical wiring costs far more to repair than a planned reroof — and an emergency job always costs a premium because you lose your bargaining power and scheduling flexibility.
Start by working out what material suits your home, your budget and your climate. Colorbond is the best all-rounder for most Australian homes. Terracotta is the premium pick if you can justify the spend. Concrete tile sits in between. If the old roof is asbestos, factor in removal costs early so the total does not blindside you.
Get three quotes, compare the scope and warranty terms carefully, and make sure your roofer is properly licensed. Check that sarking, insulation and gutter condition are addressed in the quote — if they are not mentioned, ask why.
Want an instant price estimate? Use the free roofing quote calculator — takes 30 seconds, no signup.