Top Mistakes Irish Homeowners Make When Filing a Water Damage Insurance Claim

By Jim Flannery ACII, Brand Ambassador, OMC Claims. Over 40 years in insurance claims and a founding member of the Irish Claims Consultants Association.

A water damage claim is rarely lost in one big moment. It is usually chipped away by a series of small, understandable mistakes made under pressure, when the priority is getting your home back rather than protecting a claim. If you would prefer expert hands on it from the start, take a look at our water damage claims service.

Below are the errors we see most often in Irish homes, why each one costs you, and what to do instead. None of them require special knowledge to avoid. They just require knowing about them before the water arrives.

Mistake 1: Waiting too long to act

Water damage spreads, and it spreads faster than most people expect. A delay of even a day or two can turn a contained leak into a structural problem, with damp soaking into walls, floors and the room below. There is a second cost to delay: insurers may question why more was not done to limit the damage, since you have a duty to take reasonable steps to reduce the loss.

What to do instead: act quickly to make the property safe and stop the source, then move on to the claim. Speed protects both your home and your claim.

Mistake 2: Cleaning up before documenting the damage

This is the big one, and the most natural to make. The instinct when your home floods is to dry out and tidy up. The problem is that once the evidence is gone, it cannot be recovered, and the claim then rests on your memory rather than proof. If damaged contents are removed in a skip before a loss adjuster appointed by your Insurer arrives it is very difficult to prove what you had and what was damaged. Your position will be prejudiced.

What to do instead: photograph and video everything first, including the source and any standing water, before you touch a thing. Five minutes of recording at the start can be worth a great deal at settlement.

Mistake 3: Not reading the policy

Many homeowners assume they are covered, or assume they are not, without ever checking. The detail decides the claim: whether the cause counts as sudden or gradual, what the excess is, and whether useful extras such as trace and access apply. Acting on an assumption can mean missing cover you have or saying something to the insurer that works against you.

What to do instead: spend ten minutes with the policy wording before you make the call, so you frame the claim accurately from the start.

Mistake 4: Missing the notification deadline

Most policies require prompt reporting, often described as reporting without unreasonable delay. Leave it too long and the insurer may push back on the delay alone, regardless of the merits of the claim.

What to do instead: notify your insurer or broker as soon as the property is safe and documented, and keep a note of who you spoke to and when.

Mistake 5: Accepting the assessment without question

The loss adjuster who attends is appointed by the insurer and works for the insurer, not for you. Their first assessment is a starting position, not the final word. Accepting it without scrutiny is one of the most expensive things a policyholder can do, particularly on larger claims where the gap between the first figure and the true cost can be significant.

What to do instead: treat the first figure as the opening of a negotiation. Provide your own evidence, question anything that has been left out, and get advice before you accept if the figure feels low.

Mistake 6: Underclaiming by missing hidden costs

People tend to claim for what they can see and forget the rest: drying out the structure, treating for mould, lifting and relaying floors, matching finishes across a room, and the contents damaged alongside the building. A claim built only around the obvious damage almost always falls short of the true cost of reinstatement, sometimes by a wide margin. Keep every receipt and a running note of expenses, from the emergency plumber to replacement items, so nothing is forgotten when the claim is valued.

What to do instead: build the claim around full reinstatement, not first impressions. If you are not sure what to include, this is exactly where a loss assessor earns their fee.

Mistake 7: Saying too much, too soon

An early, casual comment about the cause, made before you know the full picture, can be recorded and used to shape the outcome. Guessing that a problem had been there a while, for instance, can hand the insurer a reason to treat the damage as gradual.

What to do instead: stick to the facts you are sure of. If you are not certain why something happened, say so rather than speculating.

Mistake 8: Trying to handle a large or disputed claim alone

For a small, clear-cut claim, managing it yourself is perfectly reasonable. The trouble comes when a claim is large, complex or already in dispute, and the homeowner presses on alone because they assume bringing in help is expensive or admits weakness. In reality, this is where the gap between a fair settlement and a poor one is widest, because the value at stake is higher and the insurer’s position is more practised than yours.

What to do instead: match the help to the size of the claim. On a significant or contested water damage claim, an independent loss assessor prepares and negotiates on your behalf, and the fee is agreed in advance so you know where you stand before anything begins.

Mistake 9: Assuming gradual damage is covered

This is the single most common misconception, and it sits behind a large share of refused claims. Insurance is built around sudden, accidental events. A leak that has clearly been seeping for months, or damage that built up because a known problem was left unattended, may be treated as gradual and excluded, no matter how much harm it eventually caused.

What to do instead: do not assume either way. If a leak has been slow or long-standing, how the claim is framed and evidenced matters even more, and it is worth getting advice before you present it, because borderline cases can go either way.

What a well-run water damage claim looks like

It helps to picture the opposite of all these mistakes. A well-run claim moves quickly to make the property safe and stop the source. It is documented thoroughly before anything is cleaned away. It is framed accurately against the policy from the first phone call. It captures the full scope and cost of reinstatement, including the hidden and contents elements, rather than just the visible damage. And it treats the insurer’s first figure as a starting point to be tested, not a verdict to be accepted.

None of that requires luck. It requires knowing the pitfalls in advance and being disciplined in the first day or two, which is exactly when most claims are quietly decided.

How to put a claim back on track

If you recognise one of these in your own claim, it is rarely too late to improve the position. Stop, gather whatever evidence still exists, read your policy properly, and avoid agreeing anything further until you understand where you stand. A claim that has started badly can often be steadied, and in many cases a loss assessor can step in partway through, review what has happened and take it forward from there.

Frequently asked questions

What is the most common mistake on a water damage claim?
Cleaning up before documenting the damage. Once an area is dried and cleared the evidence is gone, which makes the loss far harder to prove and value.

Can I challenge the insurer’s loss adjuster?
Yes. The adjuster acts for the insurer, and their assessment is a starting position. You can question it, provide your own evidence, and negotiate, or appoint a loss assessor to do so on your behalf.

How quickly should I report water damage?
As soon as the property is safe and you have recorded the damage. Most policies require reporting without unreasonable delay.

What does underclaiming mean?
Claiming for less than the true cost of putting the damage right, usually by missing hidden and consequential costs such as drying, mould treatment, damaged finishes and contents.

Should I tell my insurer what caused the leak?
Stick to the facts you are certain of. Avoid speculating about the cause if it’s unclear, because an early guess can be treated as fact and affect the outcome.

Can a claim be fixed after a mistake?
Often yes. Gathering remaining evidence, reading the policy and pausing before agreeing anything can steady a claim, and a loss assessor can frequently take over partway through.

Do I need a loss assessor for a water damage claim?
Not always. For a small, clear claim you may manage on your own. For a large, complex or disputed claim, a loss assessor prepares and negotiates on your behalf, with the fee agreed in advance before any work begins.

Can I still claim without receipts for damaged items?
Often yes, although it is harder. Photographs, bank or card statements, manuals and online listings for similar items can all help establish value where the original receipts are gone.

What is the difference between a loss assessor and a loss adjuster?
A loss adjuster is appointed by the insurer and acts for the insurer. A loss assessor is appointed by you, the policyholder, and acts only for you, preparing and negotiating your claim.

About OMC Claims

OMC Claims (Owens McCarthy Ltd) is Ireland’s largest independent firm of loss assessors, acting only for policyholders, never for insurers. We provide nationwide coverage, with loss assessors serving Dublin, Cork, Limerick and every other county in Ireland. Part of the Fexco group and regulated by the Central Bank of Ireland (Registration Number C-46734), our team brings over 250 years of combined claims experience and handles more than 2,000 home and business claims a year, from straightforward domestic losses to large and complex commercial claims. We assess the damage, prepare and value your claim, and negotiate with your insurer to work to secure the settlement you are entitled to.

Disclaimer: This content is for general informational purposes only and aims to provide an overview of common water damage claim mistakes. It does not constitute legal, financial, or insurance advice. For guidance tailored to your specific circumstances, please consult a claims professional or your insurance broker/provider.