Australian home problem guide

Roof leaking

Rain-related leaks often originate around flashing, penetrations, gutters, valleys, tiles or metal-roof joints. A roofing professional is the best first inspection.

General guidance, not an inspection or diagnosis. Repair advice has not been independently reviewed by a tradesperson. How these guides are prepared.

What to do now

Treat this seriously

Do not climb onto a wet roof. Keep away from wet electrical fittings and place a container under drips only if it is safe to do so.

Common causes

  • Failed flashing or roof penetration
  • Broken tile or damaged sheet
  • Blocked or overflowing gutter / valley
  • Failed sealant or roof joint

The exact cause cannot be confirmed from a symptom alone. The first professional should inspect before repair work is authorised.

What the professional may do next

  1. Identify leak pattern and rain conditions
  2. Inspect roof and drainage
  3. Repair entry point
  4. Check ceiling / insulation for water damage

What should I ask about the price?

Ask for an itemised quote covering the inspection or call-out fee, labour, materials, GST, access, disposal and any after-hours charge. Ask what happens if extra damage is found. A reliable price needs details of the actual job; this guide does not provide an estimate.

Who may be responsible?

Owner / landlord / strata

Roof responsibility can shift to owners corporation / strata in some multi-unit properties. Rentals should be reported promptly.

Tenancy, strata, insurance and boundary responsibilities vary by circumstance and state, so confirm responsibility before non-emergency work where practical.

Questions to ask before hiring

  • Are you appropriately licensed or registered for this work in my state?
  • Does the quote include call-out, labour, parts/materials, GST and disposal?
  • What is excluded from the quoted scope?
  • If you find additional damage, will you get approval before doing extra work?
  • What workmanship or product warranty applies?

Record the indoor evidence

From a safe position, note where water appears and whether it coincides with rain. A visible stain does not necessarily sit directly below the entry point. Do not climb onto the roof or enter the roof space to trace it.

Who should investigate?

Describe the roofing type if known and ask a roof-repair business whether it handles that work. Explain if water also appears during dry weather, as the source may require a broader assessment. Sagging plaster or water near electrics requires urgent safety attention.

Ask about repair versus investigation

Does the quote cover finding the source or repairing a confirmed defect? Request the proposed scope, access arrangements and how additional findings would be approved. Ask what evidence and warranty information will be provided.

Sources and review status

Prepared for Home Triage Australia. Updated 25 October 2026. This guide has not been independently reviewed by a qualified tradesperson. The sources below support general maintenance and hiring principles, not a diagnosis of your property.

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