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Obligation · starts before the adjuster does

Your duty to limit the damage: what your policy requires before anyone calls back

There is a clause in your policy that does not get read until it matters, and it runs in the opposite direction to most people’s instinct. The Insurance Bureau of Canada puts it in one line: the policy “requires you to act to limit any further damage”.

Not once an adjuster has attended. Not once you have been told it is authorised. From the moment you know about the loss.

Read from primary sources · Editor-reviewed · Current as of September 20, 2026
By the waterdamagequotesca.com editorial team · Published September 20, 2026 · Last reviewed September 20, 2026 · 8 min read
4 primary sources cited on this page. How we check what is on this site

The short version

  • Your policy requires you to act to limit further damage — that starts when you find the water, not when an adjuster calls.
  • Photograph first, then mitigate. The two obligations only conflict if you do them in the wrong order.
  • Hiring a professional is explicitly contemplated where doing it yourself would not be safe.
  • Keep every receipt: mitigation costs are ordinarily part of the claim.

What IBC says, exactly

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.

IBC's own examples are the practical ones: boarding up windows, putting tarps over damaged roofs to protect against rain and snow, and — the important qualifier — hiring a qualified professional if it would not be safe to do the temporary repairs yourself.

So the duty is not a duty to become a restoration contractor at 2am. It is a duty to stop the loss getting bigger, by whatever means is reasonable and safe, and that explicitly includes paying somebody to do it.

The instinct it contradicts is the sensible-sounding one: do not touch anything until the insurer says so, or they will not pay. That instinct is about not disposing of evidence, which is a real concern and handled in the next section. It is not a reason to leave water running into a ceiling for eighteen hours.

Mitigating without destroying the evidence

The two obligations look like they conflict and they do not, provided you do them in the right order.

IBC's instruction on the evidence side is equally direct: “keep damaged items unless they are dangerous or pose a health hazard”. It also says to attach proofs of purchase, receipts, police reports, owner’s manuals and warranties, and to keep all clean-up receipts.

Insurance Bureau of Canada, How to file a home insurance claim · 2026

This sits in direct tension with a restorer who wants to skip the bin, which is why it is worth knowing before the truck arrives. IBC also says to attach proofs of purchase, receipts, police reports, owner’s manuals and warranties, and to keep all clean-up receipts.

So the sequence that satisfies both is:

  1. Photograph first, and generously. Wide shot of each affected room, then the water line on the walls, then individual items. Before anything moves. Timestamps beat composition.
  2. Then stop the water. Main shut-off, isolation valve, tarp, whatever the cause requires.
  3. Then limit the spread. Extract standing water, lift furniture off wet floors, get air moving.
  4. Keep what came out. Bag the soaked underlay rather than skipping it, unless it is a health hazard, which under a Category 3 loss it may well be.
  5. Keep every receipt. Mitigation costs are ordinarily part of the claim, which is precisely why they need documenting.

Why the clock is not the insurer's clock

The reason the duty is written the way it is becomes obvious once you put it next to the one published biological deadline in this subject. Health Canada states that mould will begin to grow in an area with excessive moisture within 48 hours.

The first 48 hours after water enters a home A timeline from hour zero to hour 48, marking when to stop the water, when to call the insurer, when drying starts, and when mould growth begins. 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 mark is Health Canada’s, not ours — see the table.
Everything on the green half of this line is still a drying job. The point of the orange half is that it may not be.
The same diagram as a table
The first 48 hours after water enters a Canadian home
WhenWhat happens
Hour 0Stop the water. Photograph everything before it moves.
Hour 2Call the insurer. Ask what your policy covers.
Hour 12Extraction and air movers. Drying log starts.
Hour 48Health 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.

An adjuster returning a call inside two working days is a good adjuster. Two working days can still be more than forty-eight hours. Those two facts are why the duty sits with the policyholder rather than with the insurer: the biology does not wait for the file to be opened.

This is also why a competent restorer will start extracting and drying before a scope has been agreed, and why that is not them taking liberties. Under ANSI/IICRC S500 the restorer is expected to establish dry standards and drying goals during the initial response — measurement first, argument later.

Eight activities the restorer should conduct during the initial response Quoted from the standard:

  • conduct a site specific safety survey
  • identify customer priorities and concerns
  • verify the source of water intrusion
  • identify the extent of the water migration
  • arrive at a preliminary determination
  • identify pre-existing damage
  • identify immediate secondary damage concerns
  • establish dry standards and drying goals

ANSI/IICRC S500 (2021), Section 10.6, quoted in the S500 Consensus Body position statement

What mitigation does not mean

Three things people over-read into this clause, each of which costs money.

It does not mean authorising a full rebuild. Mitigation is the temporary work that stops the loss growing. Reconstruction is the permanent work that follows, and that is scoped and agreed. Signing a restoration contract at 1am because the duty to mitigate was explained to you by somebody holding the pen is not what the clause requires.

It does not mean you cannot choose the contractor. Insurers frequently have preferred vendors, and using one is often smoother. It is not ordinarily an obligation. IBC's note that the policyholder is responsible for any difference if a contractor's charges exceed the insurer's estimate is the actual constraint, and it is an arithmetic one rather than a permission one.

It does not mean doing unsafe work. IBC's own wording contemplates hiring a professional where the temporary repairs would not be safe to do yourself. Standing water near electrical, anything on a roof in winter, and Category 3 contamination are all in that category.

A short list to keep somewhere findable

The value of this page is entirely in having read it before rather than after, so here is the version worth writing on the inside of a cupboard door.

  • Where the main water shut-off is. Actually go and look now.
  • Where the panel is, and which breakers cover the basement.
  • Your policy number and your insurer's 24-hour claims line.
  • Whether you hold sewer backup cover and overland water cover, and what the deductibles are.
  • That you photograph before you move anything.
  • That you keep receipts for everything, including the fans you buy at 9am.
  • That the proof of loss deadline is within 30 days — see how a claim runs.

None of that requires an insurer, a broker or this site. All of it is worth more on the night than any page you could read at the time.

Questions people actually ask

Am I supposed to wait for my insurer before cleaning up?

No. The Insurance Bureau of Canada states that the policy requires you to act to limit any further damage, and that policyholders are obligated to protect their property from further damage where it is safe to do so. Photograph everything first, then mitigate.

What if it is not safe for me to do it?

IBC's wording contemplates exactly that, and says to hire a qualified professional if it would be unsafe to do the temporary repairs yourself. Standing water near electrical equipment, roof work in winter and contaminated water are all in that category.

Will I be reimbursed for what I spend mitigating?

Mitigation costs are ordinarily part of the claim, which is why IBC tells you to keep all clean-up receipts. Your own wording and your deductible govern what actually gets paid, and your insurer can tell you before you spend.

Should I throw out the ruined carpet?

IBC says to keep damaged items unless they are dangerous or pose a health hazard. The exception matters for a sewer backup, where the material is contaminated. Photograph thoroughly either way.

Do I have to use the insurer's preferred contractor?

Usually not, though using one is often smoother. The real constraint IBC names is financial: the policyholder is responsible for any difference if a contractor's charges exceed the insurer's estimate.

Where to read next

Sources cited on this page

  1. Insurance Bureau of Canada, How to file a home insurance claim
  2. Health Canada, Guide to addressing moisture and mould indoors
  3. IICRC, S500 standard page
  4. ANSI/IICRC S500 (2021), Section 10.6, quoted in the S500 Consensus Body position statement

Every figure above was read from the source it is attributed to on September 20, 2026. How we check this.

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