waterdamagequotesThe question that comes before the contractor
Water damage and Canadian home insurance
In Canada the insurance question comes before the contractor question, and it is the one nobody answers honestly on a restoration company’s website. The two perils most likely to put water in a Canadian basement — a sewer backing up and water arriving overland — are both optional endorsements that a standard policy leaves out.
Everything in this section is the Insurance Bureau of Canada describing its own members’ product, or the restoration standard describing its own scope. We are not an insurer, not a broker and not an adjuster, and we do not publish what any of this costs, because we have measured none of it.
The short version
- Sewer backup and overland water are both optional. Service line usually is too.
- Frozen pipes are covered — unless adequate heating precautions were not maintained.
- Your policy requires you to act to limit further damage from the moment you know.
- Proof of loss is typically due within 30 days, signed and sworn.
The shape of a Canadian home policy
IBC describes four levels of home cover: comprehensive, basic or named perils, broad, and no frills. Which one you hold changes how every question below is answered, and most people do not know which they have.
Insurance Bureau of Canada, Types of home insurance coverage · 2026
Comprehensive covers the building and its contents for all risks except those specifically excluded. Basic or named perils covers only the perils stated. Broad is comprehensive on the building and named perils on the contents. No frills is offered by some insurers for properties that do not meet normal insurance standards. Which one you hold changes how the water questions on this site are answered.
On top of that sit the optional water coverages. IBC lists “sewer backup, and overland water or flood” among the add-ons.
The same diagram as a table
| Status | Peril |
|---|---|
| In a standard policy | Sudden or accidental escape from indoor plumbing, heating or air conditioning |
| Water damage from an appliance malfunction (not the appliance itself) | |
| Interior damage from a roof leak (not the worn roof) | |
| Only if you bought it | Sewer or drain backup — optional endorsement |
| Overland water — optional endorsement | |
| Service line / water main — optional endorsement | |
| Not covered | Storm surge and tidal wave |
| Ongoing or repeated ice dams | |
| Frozen pipes, where the heat was not maintained |
Source: Insurance Bureau of Canada, Water Damage and Flood Protection and Insurance Bureau of Canada, Flooding and Insurance.
The three you have to buy
| Endorsement | Responds to | Pays for |
|---|---|---|
| Sewer backup | Water or sewage reversing up through the drainage system | The damage inside the house |
| Overland water | Surface water, overflowing watercourses, a rising water table | The damage inside the house |
| Service line | The buried pipe between the property line and the house failing | The pipe, the excavation and the reinstatement |
What the policy asks of you
Cover is not only a list of what you get. IBC states that the policy “requires you to act to limit any further damage”, and that in the event of loss policyholders are obligated to protect their property from further damage where it is safe to do so.
Insurance Bureau of Canada, How to file a home insurance claim · 2026
IBC describes this as a requirement of the policy itself, not a courtesy. It adds that in the event of loss policyholders are obligated to protect their property from further damage if it is safe to do so — boarding up windows, putting tarps over damaged roofs — or hiring a qualified professional if doing the temporary repairs yourself would not be safe.
That obligation starts when you find the water. Health Canada puts the onset of mould growth at 48 hours, which is why the duty sits with the policyholder rather than with whoever returns your call.
The same diagram as a table
| When | What happens |
|---|---|
| Hour 0 | Stop the water. Photograph everything before it moves. |
| Hour 2 | Call the insurer. Ask what your policy covers. |
| Hour 12 | Extraction and air movers. Drying log starts. |
| Hour 48 | Health Canada’s mould growth window closes. |
The 48-hour figure is Health Canada’s: “Mould will begin to grow in an area with excessive moisture within 48 hours.” Source: Health Canada, Guide to addressing moisture and mould indoors.
The duty to mitigate page works through how to do that without destroying the evidence.
And the sentence that decides most outcomes
Insurance Bureau of Canada, How to file a home insurance claim · 2026
IBC states that insurers generally offer these three options for damaged or stolen items, and that the policyholder is responsible for any difference if a contractor’s charges exceed the insurer’s estimate. That last clause is the one that decides whether a restoration quote is a problem.
Not whether you are covered — whether the number your restorer writes and the number your insurer writes are the same number. Deductibles and settlement is the page for that.
Why this site has nothing to gain from your answer. We are paid a fixed amount for each enquiry, agreed before it is sent. It does not move with the size of the job, with whether you book anything, or with which company you pick. So there is no version of this page where steering you is worth anything to us — which is also why you will not find a company named, rated or recommended anywhere on this site.
Questions people actually ask
Which water damage is covered by a standard Canadian home policy?
Sudden or accidental water damage caused by indoor plumbing, heating or air conditioning, water damage from an appliance malfunction other than the appliance itself, and interior damage from a roof leak other than the worn roof. Sewer backup and overland water are optional endorsements.
What is not covered at all?
The Insurance Bureau of Canada lists storm surge and tidal wave flood damage, ongoing or repeated ice dam damage, and frozen pipe damage where adequate heating precautions were not maintained.
What are the four levels of home cover in Canada?
IBC describes comprehensive, which covers the building and contents for all risks except those specifically excluded; basic or named perils, which covers only the perils stated; broad, which is comprehensive on the building and named perils on the contents; and no frills, offered by some insurers for properties that do not meet normal insurance standards.
Do I have to start cleaning up before my insurer responds?
Your policy requires you to act to limit any further damage, and IBC says policyholders are obligated to protect their property from further damage where it is safe to do so. Photograph everything first, then mitigate, and keep the receipts.
How long do I have to submit a proof of loss?
Typically 30 days. It lists all damaged or lost property with the value or cost, and you must sign and swear that the statements you make are true.
Sources cited on this page
- Insurance Bureau of Canada, Water Damage and Flood Protection
- Insurance Bureau of Canada, Flooding and Insurance
- Insurance Bureau of Canada, Water Damage and Flood Protection
- Insurance Bureau of Canada, Water Damage and Flood Protection
- Insurance Bureau of Canada, Types of home insurance coverage
- Insurance Bureau of Canada, How to file a home insurance claim
- Insurance Bureau of Canada, How to file a home insurance claim
- Insurance Bureau of Canada, How to file a home insurance claim
- Insurance Bureau of Canada, Types of home insurance coverage
- Health Canada, Guide to addressing moisture and mould indoors
Every figure above was read from the source it is attributed to on September 20, 2026. How we check this.
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