Quick Answer
Full roof replacement in Melbourne costs $15,000–$45,000 for a standard 3-bedroom home in 2026, depending on roof material and size. Tile roof replacement runs $20,000–$40,000. Colorbond replacement runs $15,000–$30,000 and is faster to install. Add $2,000–$5,000 for old roof removal and disposal. Replacement makes sense over restoration when the roof is 35+ years old, has multiple leaks, or shows structural sagging. Most full roof replacements take 5–10 days weather permitting.
Complete Cost Breakdown
Replacement Cost by Roof Material and Size
| Roof Type + Size | Supplied + Installed | Typical Inclusions |
|---|---|---|
| Small tile roof (120m², single-storey) | $15,000–$22,000 | Old roof removal + new tiles + sarking + battens + ridge work |
| Standard tile roof (200m², 3-bedroom) | $20,000–$35,000 | Full strip + replace + new gutters + downpipes |
| Large tile roof (280m², 4-bedroom) | $28,000–$45,000 | Above + insulation upgrade + valleys + flashings |
| Small Colorbond roof (120m²) | $11,000–$16,000 | Strip + new sheets + sarking + fasteners + ridge |
| Standard Colorbond roof (200m²) | $15,000–$24,000 | Full replacement, standard Colorbond colour |
| Large Colorbond roof (280m²) | $22,000–$35,000 | Above + insulation + perimeter flashings |
| Slate roof replacement (rare, heritage) | $40,000–$85,000 | Specialist labour, imported tile cost |
Detailed Cost by Component
| Component | Cost (per m² or item) | Notes |
|---|---|---|
| Old roof removal + disposal | $25–$45/m² | Skip bin hire + labour |
| Asbestos roof removal (pre-1990 homes) | $60–$120/m² | Licensed asbestos removalist required |
| New tile material (concrete) | $30–$55/m² | Boral / Monier / CSR ranges |
| New tile material (terracotta) | $50–$95/m² | Imported colour variations cost more |
| Colorbond steel sheets | $25–$45/m² | Standard colours; premium colours +15% |
| Sarking (vapour barrier) | $10–$18/m² | Anticon insulation + foil layer |
| Battens replacement | $8–$15/m² | Pine treated; check existing first |
| Ridge capping + pointing | $80–$140/lin metre | Cement bed + flexible pointing |
| New gutters (Colorbond) | $45–$85/lin metre | Quad or D-profile, standard colours |
| New downpipes | $95–$180/each | Round or rectangular 100mm |
| Valley iron replacement | $350–$750 per valley | Where two roof planes meet |
| Roof flashings | $45–$95/lin metre | Around chimneys, walls, penetrations |
| Ceiling insulation upgrade (R5.0) | $22–$38/m² | Excellent time to add during replacement |
| Whirlybirds + vents | $220–$450 each | 1–2 per typical roof |
| Solar mounting brackets | $80–$220 each | If existing panels need re-mounting |
| Labour (roofer + assistant) | $70–$110/hour | $550–$880/day per crew |
| Scaffold hire (per week, 2-storey) | $650–$1,200 | Required for safety on 2-storey |
| Building permit | $450–$1,200 | Required for full replacement in Victoria |
What Affects Roof Replacement Cost
1. Roof material chosen
Material accounts for roughly 25–35% of the total. Concrete tile is the cheapest like-for-like replacement (most Melbourne homes already have it, the structure suits the weight). Terracotta tile is 40–70% more expensive than concrete but lasts 80+ years. Colorbond steel is 20–35% cheaper than tile to install (lighter, faster, fewer fixings) and is the most common new-build choice in 2026. Switching from tile to Colorbond saves $3,000–$7,000 in material and labour for a standard 200m² roof.
2. Pitch and complexity
A simple gable roof (two planes meeting at a ridge) is the cheapest to replace. Hip roofs (four planes) cost 10–15% more in labour. Complex roofs with multiple gables, dormers, valleys, or skylights cost 25–40% more because of extra cutting, flashing, and waste. Steeper pitches above 30° require safety rails and harness rigging which adds $1,500–$3,500 to labour.
3. Two-storey vs single-storey
Two-storey work needs scaffolding around the perimeter ($650–$1,200/week, usually 1–2 weeks) plus a roof-edge fall arrest system. That alone adds $2,000–$5,000 over an equivalent single-storey job.
4. Switching materials (tile to Colorbond)
Going from tile to Colorbond often requires structural reassessment. Tiles weigh ~50kg/m², Colorbond weighs ~5kg/m² — the rafters were sized for the heavier load, so no upgrade is needed (just check the battens are spaced correctly for sheet-metal fixing, usually re-battening at $8–$15/m²). Going the other way (Colorbond to tile) almost always requires engineer-certified rafter or batten upgrades costing $4,000–$12,000 extra.
5. Asbestos roof (pre-1990 homes)
Some 1960s–1980s Melbourne homes have asbestos cement roof sheeting (often the cream-coloured corrugated stuff). Removing it requires a Class B licensed asbestos removalist ($60–$120/m² for a 200m² roof = $12,000–$24,000 just for removal, on top of the new roof cost). Disposal must go to a licensed asbestos landfill. SE Melbourne areas like Dandenong, Springvale, and parts of Cranbourne have a higher concentration of these homes.
6. Old gutters and downpipes
A full replacement is usually paired with new gutters and downpipes — budget $1,800–$4,500 for a typical home. Skipping this saves money short-term but creates a mismatched look (new roof, old gutters) and old gutters often fail within 5 years anyway.
7. Insulation upgrade timing
Existing ceiling insulation is rarely R5.0 (the current Victorian standard for new builds). Upgrading during replacement — while the roof is open — costs $2,500–$4,500 for a 200m² ceiling. Doing it later (after the new roof is on) costs $4,500–$7,500 because installers crawl through tight roof space.
8. Solar panel handling
If you have rooftop solar, the panels need to be removed and reinstalled. Most roofers don’t touch solar — you’ll hire a separate solar electrician at $1,200–$2,500 for removal + reinstall of a typical 6–10kW system. Coordinate timing carefully so the panels are off the roof when replacement starts and back on within 7–10 days.
9. Suburb and access
Tight Inner Melbourne suburbs (Carlton, Fitzroy, Prahran) cost 10–20% more due to access constraints — no driveway for the skip, no street parking for the materials truck. SE outer suburbs (Berwick, Pakenham, Cranbourne, Officer) usually have easy access and competitive pricing because more roofers operate there.
10. Time of year
Roofing is weather-dependent. December–March is peak season — you’ll pay 10–15% premium and wait 4–8 weeks for a start date. May–August (cold but dry-ish) is the quietest period — you can negotiate 5–10% off and book in 1–2 weeks.
Replacement vs Restoration — When to Choose Which
Roof restoration ($4,500–$9,000 typical) cleans + repoints + repaints the existing roof. Replacement ($15,000–$45,000) strips it back to rafters and starts over. The decision usually comes down to age and condition.
| Indicator | Restoration sufficient | Replacement needed |
|---|---|---|
| Roof age | 15–30 years | 35+ years (tile), 25+ years (Colorbond) |
| Active leaks | 1–2 isolated | 3+ or recurring after patching |
| Tile condition | Surface erosion, faded colour | Cracked, broken, or porous tiles >15% |
| Ridge capping | Pointing cracked, beds OK | Beds loose, multiple capping tiles slipped |
| Sarking | Original sarking still working | No sarking at all (pre-1980 builds) |
| Battens / structure | Sound, no rot | Visible rot, sag, or termite damage |
| Iron / Colorbond | Surface rust under 5% | Through-rust holes, sheet failure |
| Insurance claim history | 1 claim | 2+ claims, insurer wants replacement |
| Planning to sell <3 years | Restoration adds value | Replacement usually overcapitalises |
| Planning to stay 10+ years | Restoration buys 5–10 yrs | Replacement is the long-play |
DIY vs Professional
Full roof replacement is not a DIY job. In Victoria, roofing work over 2 metres high requires a fall arrest system, working-at-heights training, and a building permit for full re-roofs. Insurance won’t cover DIY mistakes. Most home insurance policies also exclude leaks for 12 months after any unlicensed roof work.
What you can DIY safely (single-storey only)
- Inspect from a ladder at the eaves — spot missing tiles, blocked gutters, dislodged ridge caps
- Clean gutters and downpipes (cost: $0 + 2 hours)
- Replace 1–2 cracked tiles with spares (cost: $30–$60 + 1 hour)
- Touch-up roof paint on small flashing areas using a long-reach roller
- Add roof vents using kits ($120–$250) — but only if you’re comfortable on a pitched roof with proper harness
What requires a licensed roofer
- Full replacement (mandatory — building permit + insurance + warranty)
- Replacing or repairing more than 10m² of roof in one go
- Any work on a 2-storey or steeply pitched roof
- Re-pointing ridge caps (specialised flexible pointing materials)
- Sarking installation or replacement
- Valley iron, flashings, gutters (sheet-metal skills required)
- Asbestos roof removal (Class B licensed asbestos removalist only)
How to find a quality roofer
- Get 3 written quotes — not phone estimates. Each should itemise material, labour, removal, permit, and warranty.
- Check RBP registration — search the Victorian Building Authority register at vba.vic.gov.au. Roofers need a Registered Building Practitioner number for roof structure work.
- Verify insurance — ask for public liability ($10M minimum) and workers compensation certificates before work starts.
- Check warranties — reputable roofers offer 10–25 years on workmanship plus manufacturer warranty on materials (e.g. Colorbond comes with a 30-year warranty).
- Read recent Google reviews for the actual business name (not just trade name). Watch for fake reviews — lots of 5-stars in the last 2 weeks but nothing older = suspicious.
- Ask to see a recent job — a good roofer will happily show you 1–2 jobs they did in your area within the past 6 months.
How to Save Money on Roof Replacement
- Replace in winter (May–August) — 5–10% cheaper than December–March peak season. Roofers have empty calendars.
- Switch from tile to Colorbond — saves $3,000–$7,000 on a 200m² roof. Faster install too.
- Bundle insulation upgrade — doing R5.0 ceiling batts during roof-off costs $2,500–$4,500 vs $4,500–$7,500 separately later. Same logic for solar panel install — co-ordinate with the roofer.
- Choose standard Colorbond colours — Surfmist, Classic Cream, Dune are 10–15% cheaper than premium colours like Monument or Basalt.
- Get the inspection report first — $150–$350 well spent. Use it as leverage with quoters and to spot scope inflation.
- Buy materials directly if your roofer agrees — some accept “supply-and-fit” jobs where you pay the merchant directly. Saves 10–15% margin. Only works with established roofers.
- Skip the unnecessary extras — you don’t need premium ridge pointing for a budget roof. Standard cement-bed + flexible pointing lasts 25+ years.
- Ask for staged payment — 10% deposit, 40% on material delivery, 40% on completion, 10% on snag-list signoff. Refuse anything more than 30% deposit upfront.
- Check council rebates — some Melbourne councils offer minor grants for solar-ready or energy-efficient roof replacement. Casey, Cardinia, and Frankston council websites are worth a 5-minute browse.
- Combine with a planned reno — if you’re already extending or renovating, do the roof at the same time so scaffold and skip costs are shared.
Roof Replacement Timeline — Day-by-Day
| Day | What happens | What you need to do |
|---|---|---|
| Pre-week | Quote signed, deposit paid, permit lodged, scaffold + skip booked | Move solar to be removed; clear yard access; alert neighbours |
| Day 1 | Scaffold erected, materials delivered to site, skip placed | Move cars off driveway, secure pets indoors |
| Day 2–3 | Old roof stripped, ridge caps removed, sarking lifted | Expect noise + dust; protect ceiling cavity belongings |
| Day 3–4 | Batten check + replace, sarking + new insulation laid | Critical weather window — tarps must be ready if rain forecast |
| Day 4–7 | New tiles or sheets laid, ridge work, flashings | Visual inspection — check colour and line |
| Day 7–8 | Gutters + downpipes, valley iron, penetrations | Test downpipes drain freely |
| Day 8–9 | Cleanup, scaffold removal, skip collection | Walk roof perimeter; check yard for nails or tiles |
| Day 9–10 | Final inspection, snag-list, payment | Get warranty paperwork in writing; final payment after signoff |
Hidden Costs to Watch For
- Permit cost ($450–$1,200) — not always quoted; ask
- Skip bin upgrade — if removal exceeds the booked skip size, you pay for an extra bin ($350–$650)
- Rafter / batten rot discovered mid-job — budget 5–10% contingency ($1,000–$3,500)
- Insulation top-up — even if you don’t upgrade, existing insulation often gets compacted during the job, needing top-up ($800–$1,800)
- Internal repaint — if there’s been water damage to ceilings, expect $1,500–$3,500 in plastering and painting after the new roof is on
- Solar reinstall — $1,200–$2,500 not usually quoted by the roofer
- Antenna / aerial — relocation + refit $150–$350 (often forgotten)
- Driveway repair — cracked from skip or scaffold loading $300–$1,200 to patch
Frequently Asked Questions
How long does a roof replacement take in Melbourne?
Most full replacements take 5–10 working days from scaffold up to scaffold down. A single-storey 200m² Colorbond replacement runs 4–6 days; a 2-storey 280m² tile replacement runs 8–12 days. Wet weather can extend this by 2–5 days. Permits and material lead time typically add 2–6 weeks to the overall project before work starts.
Do I need to move out during roof replacement?
No. The roof is removed in sections so the house is never fully exposed overnight — tarps cover any unfinished area before the team leaves each day. Expect dust, noise, and vibration during working hours (7am–5pm typically). Light sleepers, work-from-home parents, or those with babies sometimes prefer to stay elsewhere for the noisiest 2–3 days.
Is my insurance going to cover roof replacement?
Generally no — routine wear-and-tear and age-related replacement isn’t covered by home insurance. Insurance covers storm damage repairs or replacement caused by a specific covered event (hailstorm, fallen tree, fire). After a hailstorm, file a claim within 30 days and let the assessor decide replace-vs-restore — many Melbourne homes were replaced under insurance after the 2020 and 2024 hailstorms.
What’s the difference between Colorbond and Zincalume?
Both are steel roofing made by BlueScope. Zincalume is the bare unpainted aluminium-zinc-coated steel (silver finish, $5–$10/m² cheaper). Colorbond is Zincalume with a baked-on coloured paint coat that resists fading, chalking, and corrosion for 30+ years. For aesthetic Melbourne suburbs, Colorbond is almost always specified. Zincalume is fine for sheds and rural buildings.
Will a new roof reduce my heating and cooling bills?
Yes, especially if you upgrade insulation at the same time. New sarking + R5.0 ceiling batts typically cuts cooling costs 15–25% in summer (less radiant heat through the ceiling) and heating costs 8–15% in winter. A reflective Colorbond colour (Surfmist, Classic Cream) reduces summer attic temperatures by 8–15°C vs a dark roof, which matters for upper-floor bedrooms.
Can I keep my solar panels during roof replacement?
The panels must be removed and reinstalled — you can’t roof under them. Most roofers don’t touch solar, so coordinate with your solar installer: they’ll remove the panels and mounting brackets (1–2 days) before the roofer starts, then reinstall after the new roof is on. Total solar reinstall cost is $1,200–$2,500 for a typical 6–10kW system. Some roofers offer a managed package that includes solar coordination.
Do I need a building permit to replace my roof?
In Victoria, yes — full roof replacement on a residential property requires a building permit (lodged by your builder or roofer with a Registered Building Surveyor). The permit costs $450–$1,200 and ensures the work complies with the Building Code of Australia. Permits also protect resale value — conveyancers ask for them during property settlement. Avoid roofers who say “you don’t need a permit” — they’re cutting corners.
How long should a new roof last?
A new concrete tile roof should last 40–50 years with a restoration at the 20–25 year mark. A new terracotta tile roof should last 60–80 years with minimal maintenance. A new Colorbond steel roof should last 30–50 years — Colorbond itself is warranted 30 years, but well-maintained roofs regularly exceed 40. Slate roofs are the longest-lived at 80–100 years but rare in Melbourne.
Next Steps
If you’ve decided your roof needs replacement, the practical order of operations is:
- Book an inspection report ($150–$350) for an evidence-based scope
- Get 3 written quotes — tile-like-for-like, Colorbond switch option, restoration-only option
- Compare warranty terms, RBP registration, insurance certificates, and references
- Pick a winter (May–August) start date for the best price
- Lock in insulation upgrade in the same quote
- Coordinate solar removal/reinstall if applicable
- Sign with 10% deposit only, staged payments to follow
Related guides on HomeUpkeep:
- Roof Restoration Cost Melbourne — if you’re not ready for full replacement
- Ceiling Insulation Cost Melbourne — the cheapest upgrade to bundle with roof work
- Gutter Replacement Cost Melbourne — usually paired with roof replacement
- Colorbond vs Tile Roof — Which Is Right for Your Melbourne Home
See also on HomeUpkeep:
