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Hail Damage Assessment Calculator

Estimate 2026 Australian hailstorm roof damage claim by hailstone size, Colorbond/tile/membrane, age and impacted slopes — costed to AS 2050 / AS 1562 and Q1 2026 ARC contractor rates. Tuned to SE QLD / ACT / NSW Hunter hail belt.

Hail Damage Assessment Calculator

Estimate 2026 Australian hailstorm roof damage claim by hailstone size, Colorbond/tile/membrane, age and impacted slopes — costed to AS 2050 / AS 1562 and Q1 2026 ARC contractor rates. Tuned to SE QLD / ACT / NSW Hunter hail belt.

Estimated claim total
$3,750
Range: $3,188 – $4,501
Insurer pays after excess: $3,250
Spot repair — sheet replacement / dented-panel cosmetic repair · Damage severity index: 6% · Estimated impacted area (m²): 13
Severity-tiered estimate — assessor scope may vary
Roof
$3,030
Gutters
$720
Cladding
$0
Windows
$0
Skylights
$0
Assessor labour
$0

What this calculator estimates

This calculator produces an Australian claim-grade hail damage estimate in 2026 AUD across three tiered outcomes:

  • Spot repair — selective panel or tile replacement for marginal damage on a single windward slope.
  • Partial slope — strip and re-cover only the slopes that took meaningful damage.
  • Full re-roof — match-and-blend impossible (discontinued Colorbond colour, tile profile), so whole roof is replaced.

It separates the claim into roof, gutters and downpipes, cladding or render, windows, skylights, supplement assessor labour, and council building consent fees.

How to use it

  1. Enter roof area in square metres. Use the roof area calculator if unknown.
  2. Pick roof material. Colorbond, Zincalume, terracotta tile, concrete tile, slate, and membrane have very different damage profiles.
  3. Pick the largest hailstone observed. Marble (13 mm), 20-cent coin (28 mm), golf ball (44 mm), tennis ball (64 mm), and cricket ball (70+ mm) reference sizes follow Bureau of Meteorology severe-thunderstorm classification.
  4. Set roof age class. Roofs over 15 years are commonly approved for full re-roof at marginal hail sizes because Colorbond colour or tile profile is discontinued.
  5. Pick how many slopes took damage. Most AU 4-slope roofs take 60–80% of impacts on the windward face.
  6. Toggle collateral damage — gutters, cladding, windows, skylights.
  7. Enter supplement assessor hours if scope is likely to require re-inspection.

Typical 2026 Australian hail claim ranges

These ranges reflect 2026 ARC Q1 contractor rates, ICA Hail Cat Loss Report data, and quotes from major insurer preferred-network installers (RACQ, NRMA, Suncorp, AAMI, Allianz, Youi).

Tier (220 m² Colorbond roof, mid-life, single-storey)2026 claim total
Spot repair (1 slope, marble-20c hail)A$1,200 – A$3,500
Partial slope (2 slopes, 20c-golf hail)A$5,500 – A$11,500
Full re-roof (3-4 slopes, golf-tennis hail)A$11,500 – A$19,500
Catastrophic (cricket-ball hail, multi-trade)A$19,500 – A$32,000+
Gutters (collateral)A$700 – A$1,200
Cladding / render (pitting)A$2,500 – A$4,500
Windows (typical pane)A$1,200 – A$1,800 each
Skylights (cracked Velux)A$500 – A$900 each
Typical AU policy excessA$500 – A$1,500
Hail-prone postcode excess (SE QLD, ACT)A$2,500 – A$5,000

Add 20% for two-storey access and 45% for three-storey or higher.

Cost drivers

Hailstone size. Damage scales steeply with diameter. The Sydney 1999 storm reached 90 mm; Canberra 2020 reached 80 mm; Brisbane 2021 reached 70 mm — all triple-digit kinetic energy at typical fall velocities.

Roof material. Colorbond Ultra (XRW) and Colorbond Activate (steel substrate) survive most 20–40 mm hail without panel-replacement scope. Terracotta tile shatters at marginal hail sizes (above 35 mm). Concrete tile is more resistant but cracks at 50+ mm. Slate is the most resistant but rare. Zincalume without paint film is more dent-tolerant cosmetically but the same functionally.

Roof age and condition. AS 2050 covers tile fixing; AS 1562 covers metal cladding. Pre-2000 Colorbond colours are commonly discontinued — partial-slope scope is then disputed because match-and-blend is impossible.

Slopes impacted. AU 4-slope roofs typically take 60–80% of impacts on the windward face (often the south or east face in SE QLD storms; west or south-west in Sydney and Canberra).

Match-and-blend / Like-for-like. AU home insurance policies generally include a ‘like-for-like’ replacement clause. When the original Colorbond colour or tile profile is discontinued, full re-roof is the only viable scope. This is the most-litigated point in AU hail claims.

Collateral damage. Bent Colorbond fascia and gutters, pitted hardiplank or render, broken windows, cracked skylights, and dented HVAC condensers are common. Collateral corroborates the roof claim and typically raises total settlement by 20–55%.

Excess structure. Standard 2026 AU home insurance excess is A$500 to A$1,500. Hail-prone postcodes (4000s, 4500s, 2600, 2900s, 2300s, 2750s) typically apply hail-specific excesses of A$2,500 to A$5,000.

Australian codes, standards, and references

  • AS 2050:2018 — Installation of roof tiles.
  • AS 1562.1:2018 — Design and installation of sheet roof and wall cladding — Metal.
  • AS 4040.3 — Method of testing sheet roof and wall cladding — Resistance to wind pressures for cyclone regions.
  • AS/NZS 5601 — Gas installations (relevant for chimney/flue clearances if disturbed).
  • AS/NZS 1418 — Cranes, hoists and winches (assessor access).
  • NCC Volume Two (BCA) — Building Code of Australia, Class 1 and 10 buildings.
  • Bureau of Meteorology severe-thunderstorm warnings and storm reports — gold-standard evidence.
  • ICA Code of Practice 2020 — General insurance industry standards for claim handling.
  • ARC Technical Bulletins — Industry-standard hail damage assessment.

The ICA recommends Class 4 / TestSafe-rated roofing in any postcode with documented hail-event return interval below 25 years. Some insurers offer premium discounts (3–8%) for documented Class 4 installations.

Diagnostic step-by-step

  1. Photograph the hail. Date-stamped, with a coin (10c, 20c, or 50c) or ruler for scale.
  2. Screenshot the Bureau of Meteorology severe-thunderstorm warning for your area on the loss date. Save the PDF.
  3. Walk the property within 7 days with date-stamped photos: roof slopes from ground level, gutters, cladding, windows, skylights, HVAC.
  4. Get a free ARC-member roofer inspection within 14 days. Documentation on a per-slope basis with photographs.
  5. Notify the insurer within 7 days of the storm via the policy app or phone.
  6. Be present for the assessor inspection. Have your ARC roofer present.
  7. Get the scope and estimate in writing. Supplement if scope is short of ARC documentation.
  8. Escalate to AFCA (Australian Financial Complaints Authority) if scope is disputed after 45 days.

Avoiding scams and overcharging

Post-storm door-knocking contractors are a known AU fraud zone, especially in SE QLD and Sydney west. Red flags:

  • ‘Storm damage’ claims after non-severe rain events.
  • Cash-only or wire-transfer demands.
  • No ARC or Master Builders membership, no proof of public liability insurance.
  • Pressure to sign before written, itemised quote.
  • ‘We’ll cover your excess’ offers — illegal and may invalidate the claim under insurance fraud provisions.
  • Out-of-state contractors with no QBCC, NSW Fair Trading, or relevant state contractor licence.

Use ARC-member or Master Builders Australia-member roofers with at least 5 years of in-state trading, valid public liability and workers’ compensation insurance, and verifiable hipages or ServiceSeeking reviews from local addresses.

Sources: 2026 ICA Hail Cat Loss Report; ARC Q1 2026 contractor rates; AS 2050:2018, AS 1562.1:2018, AS 4040.3; AS/NZS 5601, AS/NZS 1418; NCC Volume Two (BCA); Bureau of Meteorology severe-thunderstorm warnings; ICA Code of Practice 2020; ARC Technical Bulletins; quotes from RACQ, NRMA, Suncorp, AAMI, Allianz, and Youi preferred-network installers.

Frequently asked questions

How much does hail damage cost to repair in Australia in 2026?
A typical 2026 Australian hail claim runs A$1,200 to A$24,000 depending on tier. Spot repairs on a single windward pitch after marble-to-20-cent-coin hail run A$1,200 to A$3,500. Partial-slope replacement on a 220 m² Colorbond roof after golf-ball hail runs A$5,500 to A$11,500. Full re-roof after cricket-ball-sized hail runs A$11,500 to A$24,000 plus collateral (gutters A$850, cladding A$3,200, broken windows A$1,500 each). The excess is typically A$500 to A$1,500 on 2026 AU home insurance policies. Sources: ICA 2026 Hail Cat Loss Report, ARC Q1 2026 contractor rates, and quotes from RACQ, NRMA, Suncorp, AAMI, Allianz, and Youi preferred-network installers.
Which Australian regions get the most hail?
The Australian hail belt covers SE Queensland (Brisbane, Sunshine Coast, Gold Coast hinterland), the ACT (Canberra), the NSW Hunter Valley (Newcastle, Singleton, Maitland), Sydney's western suburbs, and Adelaide Hills. The Sydney April 1999 hailstorm remains Australia's largest single-event insurance loss at A$1.7 billion (A$5.5 billion in 2026 dollars). The 2020 Canberra and 2021 Brisbane storms each caused A$1 billion plus in damage. Insurers in these regions typically apply higher excesses or require Class 4 / TestSafe-rated roof materials for new builds.
What size hail damages an Australian roof?
Pea-size hail rarely damages Colorbond or terracotta tile. Marble-size (about 13 mm) marks Colorbond paint and cracks brittle terracotta tiles. 20-cent-coin size (28 mm) is the threshold for functional damage to most coverings — Colorbond starts to dent visibly, concrete tiles begin to chip, and terracotta shatters in 15–25% of impacts. Golf-ball (44 mm) causes Colorbond panel denting requiring sheet replacement on 60%+ of impacted panels. Tennis-ball (64 mm) shatters terracotta and dents Colorbond beyond cosmetic repair. Cricket-ball (70 mm+) guarantees full re-roof. Slate is the most hail-resistant but uncommon outside heritage homes.
Does Australian home insurance cover hail damage?
Yes — virtually all Australian home and contents insurance covers hail under 'storm damage', subject to the policy excess (typically A$500 to A$1,500). The ICA (Insurance Council of Australia) classifies storms by Bureau of Meteorology severe-thunderstorm warnings; an active warning on the loss date is gold-standard evidence. Some policies in hail-prone postcodes apply higher hail-specific excesses (A$2,500 to A$5,000) or exclude older roofs (over 15–20 years). Pre-storm roof condition matters — gradual deterioration or wear-and-tear is excluded. Reading the PDS carefully is essential.
How does an Australian loss assessor measure hail damage?
The assessor inspects from a tower scaffold or EWP (elevating work platform; safety per AS/NZS 1418). They count dented panels, shattered or chipped tiles, displaced ridge capping, and damaged hip and valley flashings on a per-slope basis. The threshold for partial-slope vs full re-roof is typically 25–40% functional damage per slope plus discontinued Colorbond colour or tile profile that prevents seamless match-and-blend. ARC technical bulletins and HIA Building Codes are the industry references.
How long do I have to file an Australian hail claim?
Most Australian insurers require notification 'as soon as reasonably possible' — interpreted as within 30 days of the loss event. Formal claim filing within 12 months is the standard policy term. ICA Code of Practice obliges insurers to acknowledge claims within 10 business days and decide on claims within 4 months for non-catastrophe events (6 months for declared catastrophes). Late notification is the most common claim denial reason.
Should I get a roofer or assessor first?
A free ARC-member roofer inspection first is recommended. Most reputable roofers will inspect at no cost in exchange for the work if a claim is approved. The roofer's documentation supports the claim. Insurer's loss assessor verifies. Avoid claims-management companies that take 20–35% of settlement — they're rarely better at scope advocacy than a local ARC-member roofer and add a substantial cost.
What's the difference between cosmetic and functional hail damage in Australia?
Functional damage means the roofing element can no longer perform its weatherproofing function — Colorbond panel with breached paint film exposing substrate (5+ year corrosion risk), shattered or cracked tile, slate with detached corner, or membrane with puncture. Cosmetic damage is visible (light denting on Colorbond, surface chipping on concrete tile, granule loss on bitumen) but doesn't compromise function. Most Australian policies cover functional damage; some now explicitly exclude cosmetic-only damage to Colorbond panels under post-2020 PDS revisions.

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