# CL-H-05: My insurer says the water damage was caused by wear and tear, so it won't pay. How can I check if that's right?

Collected 11 October 2026

[Home and contents insurance study](https://nzbrands.ai/research/insurance/home-contents-insurance)

## ChatGPT

Answer ID: 180492be-2eae-4f2d-bd40-ee2691be84ce

If your insurer in New Zealand says water damage was caused by “wear and tear,” that doesn't automatically mean its decision is correct. The key is to establish what caused the damage, what your policy actually excludes, and whether the insurer has enough evidence to justify declining your claim.

For example, a deteriorating pipe might be excluded from cover, but the resulting water damage to your home may be treated differently under your policy. The exact wording and circumstances matter.

## 1. Get the evidence behind the insurer's decision

Ask your insurer for the following in writing:

- The exact policy wording it relies on, including the wear-and-tear exclusion and any clauses about gradual damage, leaks, or resulting damage.
- The technical evidence supporting its conclusion, such as a plumber's report, leak detection report, assessor's findings, photographs or moisture readings.
- The precise cause of the damage it has identified. Was it corrosion, a failed seal, a cracked pipe, a sudden rupture, a long-term leak, or something else?
- A breakdown of what is declined. Is the insurer excluding only the failed component, the resulting damage to floors, walls and ceilings, or the entire claim?
- Its explanation of how the evidence fits the policy wording. Ask why it considers the damage excluded rather than covered.

Don't rely solely on a phone explanation. Keep the claim decision and supporting material in writing.

## 2. Compare the cause with what your policy covers

New Zealand Consumer Protection gives a useful example: an old washing-machine hose fails because its rubber seals have deteriorated. The insurer may refuse to replace the hose but contribute to repairing the water-damaged lino and walls. That illustrates why the cause of the leak and the damage caused by the leak should be assessed separately, subject to the policy's terms. [Insurance](https://www.consumerprotection.govt.nz/help-product-service/managing-money/insurance)

Use this checklist when reviewing your claim:

- Was the leak sudden, or did water escape gradually over weeks or months?
- Is there evidence of deterioration, or is the insurer assuming wear and tear because the property is old?
- Does the policy exclude the faulty pipe, fitting or appliance only, or also the resulting damage?
- Does the policy have separate exclusions for hidden gradual damage, faulty workmanship, defective materials or lack of maintenance?
- Has the insurer considered all potentially covered parts of the claim?

A plumber's independent written opinion can be particularly useful if the insurer's report is vague or doesn't explain how the damage occurred. Ask the plumber to distinguish the likely cause of the failure, how long the leak may have been present, and what damage resulted from it.

Before paying for invasive testing or repairs, ask the insurer whether it will agree to the proposed investigation or contribute to the cost. Take photos and preserve any removed components where practical. Prevent further damage promptly, and keep receipts for reasonable emergency work.

## 3. Challenge the decision if the evidence doesn't add up

You can make a formal complaint to the insurer. New Zealand Consumer Protection recommends asking for another assessor to review the claim when you disagree with the decision. [Insurance](https://www.consumerprotection.govt.nz/help-product-service/managing-money/insurance)

You could send this:

### Draft complaint to your insurer

Copy, edit and send by email.

I dispute the decision to decline my water-damage claim on the grounds of wear and tear.

Please provide the specific policy clauses relied upon, all relevant assessor and technical reports, photographs, and the evidence supporting your conclusion about the cause and duration of the water escape.

Please also explain separately why the failed component and each category of resulting damage are considered excluded under my policy.

I request a fresh review of the claim by an appropriately qualified assessor, taking into account any independent evidence I provide, and a written response addressing each of these points.

Please treat this as a formal complaint under your internal complaints process.

 Copy complaint

Keep copies of your policy, claim correspondence, reports, photographs, repair quotes and receipts. Ask the insurer to confirm any relevant complaint or review deadlines.

## 4. Escalate if the insurer won't change its decision

In New Zealand, you can take the dispute to your insurer's independent, external dispute resolution scheme if its internal complaints process doesn't resolve the issue. These schemes are free for consumers. [Making a complaint about your financial service provider](https://www.consumerprotection.govt.nz/help-product-service/managing-money/how-to-complain-about-your-financial-service-provider)[How to Make an Insurance Complaint (NZ)](https://www.icnz.org.nz/individuals/making-a-complaint/)

- Insurance & Financial Services Ombudsman (IFSO): [ifso.nz](https://www.ifso.nz/)
- Financial Services Complaints Ltd (FSCL): [fscl.org.nz](https://fscl.org.nz/)

Check which scheme your insurer belongs to, and note any referral deadline in its final response or deadlock letter. [How to Make an Insurance Complaint (NZ)](https://www.icnz.org.nz/individuals/making-a-complaint/)[Make a complaint](https://fscl.org.nz/make-a-complaint/)

## Let's check your specific claim

I can help you assess whether the insurer's explanation makes sense. The most useful starting point is the physical cause of the leak.

If you have the insurer's decline letter or the relevant policy wording, you can also paste it here after removing personal details. I can help you identify the specific arguments to check and questions to put back to the insurer.

## Gemini

Answer ID: 1695262e-d6a5-452e-92e7-c08a70659627

When an insurer declines a water damage claim based on "wear and tear" or "gradual damage," it can be frustrating, but insurers sometimes misdiagnose the root cause. To check if their decision is correct and challenge it if necessary, you can follow these practical steps:

### 1. Request the Formal Decline Letter & Evidence
* **Ask for specifics in writing:** Ensure you have a formal letter stating the exact reasons for the decline, including the specific policy clauses they are relying on.
* **Review their reports:** Ask for copies of any assessor, plumber, or engineer reports the insurer used to make their decision. You have a right to see the evidence they are basing their judgment on.

### 2. Understand the Distinction (Sudden vs. Gradual)
* **Gradual Damage Exclusion:** Most standard New Zealand house policies exclude wear, tear, corrosion, rot, or gradual damage. If a pipe slowly leaked for months inside a wall because it corroded over time, they will typically point to this exclusion.
* **The "Sudden and Accidental" Test:** Check if the water damage actually stemmed from a sudden, unexpected event (e.g., a fitting that abruptly blew apart, a severe storm, or an accidental impact). 
* **Resultant Damage:** Even if the gradual leak itself isn’t covered, some policies or extensions provide cover for *resultant damage* (the sudden harm caused *by* the leak, such as ruined carpets or warped flooring), subject to policy terms.

### 3. Get an Independent Second Opinion
* **Hire an independent professional:** Bring in an independent certifying plumber, builder, or forensic leak-detection specialist to inspect the damage. 
* **Look for evidence of suddenness:** Ask them specifically to determine whether the failure happened abruptly (e.g., a sudden pressure surge or mechanical failure) or if it truly was long-term wear and tear. Having an expert report that contradicts your insurer's assessor is your strongest tool.

### 4. Escalate Through the Formal Dispute Process
If you believe the insurer is wrong, New Zealand has a structured framework to challenge them:

* **Step 1: Internal Dispute Resolution (IDR)**
  Contact your insurer’s dedicated complaints department. Tell them you wish to make a formal complaint, present your independent evidence, and ask them to review their decision. By law, New Zealand insurers must have an active IDR process.
* **Step 2: External Dispute Resolution (EDR)**
  If your insurer upholds their decision or doesn't resolve the complaint within a reasonable timeframe (usually up to 2 months), you can take your case to an independent dispute resolution scheme. Depending on your insurer, this will be either:
  * **The Insurance & Financial Services Ombudsman (IFSO) Scheme**
  * **Financial Services Complaints Limited (FSCL)**
  
  *Note: These services are entirely **free** for consumers, independent, and their final decisions are legally binding on the insurance company (up to $500,000 plus GST for IFSO).*

---

Would you like advice on how to draft a formal dispute email to your insurer's complaints department?

## AI Overviews

Answer ID: 7576e7cb-44c7-4a5b-a01e-a451fba2b8e6

To check if your insurer’s decision is right, you need to understand how New Zealand insurance law differentiates between the **cause of the damage** and the **resulting damage**. While basic "wear and tear" is universally excluded from house insurance, you may still be entitled to a payout under a **Hidden Gradual Damage** policy extension.

Follow these steps to check if your insurer's decline is legally valid:

1\. Separate the "Cause" from the "Resulting Damage"

In New Zealand, insurers treat the root cause and the final damage as two separate things:

 * **The Cause (Usually Excluded):** If an old rubber washer perished or a pipe corroded over 10 years, the cost to physically buy a new pipe or fix that specific leak is **not covered** because it is wear and tear.

 * **The Resulting Damage (Often Covered):** If that hidden, leaking pipe slowly rotted out your floorboards or ruined your drywall before you could see it, the cost to repair the surrounding wood and drywall may be covered under a policy extension.

2\. Check for the "Hidden Gradual Damage" Extension

Look at your policy wording schedule. Most standard Kiwi home insurance policies (such as those from AA Insurance, Tower, or AMP) feature a **Hidden Gradual Water Damage** benefit.

 * **The Rules:** It must come from an internal water, waste, or heating pipe system—not a leaking roof, blocked gutter, or unsealed shower recess.

 * **The Limit:** If it was hidden from view (e.g., inside a wall cavity or under floorboards), insurers typically must pay out a capped amount—usually **between $2,000 and $10,000** depending on your provider.

3\. Review the Evidence and Burden of Proof

The legal burden of proof changes depending on the argument:

 * To deny a claim completely based on wear and tear or gradual damage, **the insurer must prove** that the damage occurred gradually. They usually rely on a report from their own assessor, builder, or plumber.

 * Request a full copy of the assessor's report from your insurer. Look closely at what they found. If the damage was caused by a single, sudden burst pipe rather than a slow drip over weeks, it is "sudden and accidental loss" and must be fully covered.

How to Dispute the Decision

If you find the insurer misapplied the policy terms, you can challenge it using New Zealand's free dispute process:

Step| Action| Details
---|---|---
**1\. Gather Proof**| **Get an independent opinion.**| Hire your own qualified plumber or builder to look at the leak. If they write a short report stating the leak was hidden and couldn't have been maintained, or that it was sudden, you have a strong case.
**2\. Internal Complaint**| **Lodge a formal internal dispute.**| Send your new evidence to your insurer’s internal complaints team. They have up to **two months** to resolve it with you.
**3\. External Ombudsman**| **Escalate to an independent body.**| If they reject your complaint, ask for a "letter of deadlock". You can then take the case to the Insurance & Financial Services Ombudsman Scheme (IFSO) or Financial Services Complaints Ltd (FSCL). This service is **completely free for consumers**.

* * *

To help narrow down whether your insurer is in the right, could you tell me **where the leak originated** (e.g., a pipe inside a wall, a leaking shower base, or a roof gutter)? Knowing whether the damage was **visible or hidden** before it was discovered would also help determine your coverage options.

## Google AI Mode

Answer ID: 4f45c29f-94f3-441b-8635-bc88a38fc7d1

When an insurer declines a water damage claim based on **wear and tear** or **gradual damage** , it is common for the issue to come down to the exact wording of your policy and the physical evidence of how quickly the damage occurred. House policies generally cover **sudden and accidental** events, while excluding long-term deterioration or maintenance issues.

To check if your insurer’s decision is correct, take the following steps:

 1. **Review your policy wording**
Carefully read the definitions of "wear and tear," "gradual damage," "deterioration," and any exceptions for "resultant damage" (sometimes a sudden event causes damage, even if a part of the setup was old). Check what exclusions or maintenance requirements are explicitly written into your contract.
 2. **Request the insurer's full evidence**
Ask the insurer for a copy of the assessor’s report, photographs, and any technical or plumber's notes they relied on. You need to know the specific factual basis for why they claim it was wear and tear rather than a sudden break or failure. [Insurance & Financial Services Ombudsman Scheme]
 3. **Get an independent expert opinion**
Hire an independent builder, certified plumber, or forensic engineer to inspect the damage and write a professional report. An independent expert can provide a clear view on whether the failure was sudden and accidental or genuinely long-term wear and tear.
 4. **Use the insurer’s internal dispute resolution (IDR)**
If you disagree with their assessment after reviewing the evidence and getting a second opinion, formally request an internal review. Every participating insurer in New Zealand has a free internal complaints process. Submit your new evidence and ask them to re-evaluate. [Tim Gunn Lawyer]
 5. **Escalate to an external dispute resolution scheme**
If the insurer maintains their denial or fails to resolve the complaint within two months (reaching a deadlock), you can take the case to a free, independent external dispute resolution scheme that your insurer belongs to:
 * The **Insurance& Financial Services Ombudsman (IFSO) Scheme**
 * **Financial Services Complaints Limited (FSCL)** Financial Services ComplaintsMake A Complaint - IFSO.nz
These schemes investigate whether the insurer's decision complies with the policy contract and the law.

Would you like help finding out **which external dispute resolution scheme** your insurer belongs to, or do you want tips on **what questions to ask an independent plumber/assessor**?