Why an Old Roof Can Kill Your Home Insurance (and Your Closing) in Ontario
People assume "the roof looks fine, so we’re good." The real risks are two: old roofs are paid at depreciated value, and — no insurance means no mortgage advance, which stalls the whole deal.
Why does an old roof make home insurance expensive or hard to get?
Because insurers price risk off roof age. The GTA-default asphalt-shingle roof lasts about 15–25 years, and insurers typically start caring at 15, limit coverage past 20, and decline outright past 25 years. More importantly, even when an old roof stays insured, a claim often shifts from “Replacement Cost (RCV)” to depreciated Actual Cash Value (ACV) — IBC notes some policies pay as little as ~25% of replacement cost. And with no active insurance, a lender won’t advance funds and the deal stalls. Sources: IBC / ThinkInsure / Ratehub (2026).
Sources: Insurance Bureau of Canada (ibc.ca, 2026); ThinkInsure (2025); Ratehub.ca (2026); Mitch Insurance (2026)
I’m Arthur Zhao. Buyers focus on the kitchen and the basement; almost nobody looks up at the roof — yet roof age can decide whether a purchase closes cleanly. I’ve watched buyers clear their conditions, go to buy insurance, and discover the roof is too old to insure — then the lender won’t fund and the deal nearly collapses. Here’s how roof age drives insurance and financing, and what buyers should do during the conditional period. Note: specific age thresholds are each insurer’s underwriting, not a legal or provincial rule.
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Asphalt is ~15–25 years, shorter in Ontario
Insurers care from 15, tighten past 20
💡 The expensive part of an old roof: the settlement basis flips from Replacement Cost (RCV) to depreciated Actual Cash Value (ACV). The insurer still covers you, but pays only depreciated value — IBC notes some policies pay as little as ~25% of replacement cost on a roof near end-of-life. On a claim, that can mean thousands of the replacement bill come out of your pocket. Source: IBC (2026).
Wear-and-tear is never covered — only sudden perils
🚨Don’t waive the financing / insurance condition before confirming the home is insurable. An old or damaged roof can trigger a decline; with no insurance the lender won’t advance funds and you’re stuck closing a deal you can’t fund. Get an insurance quote bound (or at least verbally confirmed) before removing conditions.
The decisive link: no insurance = no advance = no closing
Home insurance isn’t legally mandatory in Ontario, but lenders require an active policy before releasing funds. If an insurer declines the home over roof condition, you have no proof of insurance, the lender won’t fund, and closing stalls until the roof is fixed/replaced or alternative coverage is found. So before you waive conditions: get the roof’s install/replacement year in writing (seller disclosure, permit or invoice), a home inspection with a roof assessment, and — for older roofs — an insurance quote lined up during the conditional period, not after. (WETT is a wood-burning appliance certificate, not a roof document — don’t conflate them.) Sources: Ratehub.ca / Deeded.ca (2026).
Frequently Asked Questions
Can I insure a house with a 20-year-old roof?
Often yes, but with strings — a surcharge, a pre-binding inspection, or Actual Cash Value (depreciated) settlement rather than full replacement cost; some insurers decline past 20–25 years. Sources: IBC / ThinkInsure (2025) / Mitch Insurance (2026).
Will insurance pay to replace my roof if it just wears out?
No. Gradual wear and aging aren’t insured perils — only sudden covered events like wind, hail or fire trigger a claim, and even then an old roof is paid at depreciated value. Sources: IBC (2026) / ThinkInsure (2025).
Does an old roof affect my mortgage or closing?
Yes, decisively. If the insurer declines over roof condition, you have no proof of insurance, the lender won’t release funds, and closing is delayed until the roof is addressed or alternative coverage is found. Sources: Ratehub.ca / Deeded.ca (2026).
What’s the difference between Replacement Cost and Actual Cash Value on a roof?
Replacement Cost pays to install a new equivalent roof; Actual Cash Value subtracts depreciation for age — on an end-of-life roof that can drop the payout to roughly a quarter of replacement cost, leaving you to fund the rest. Source: IBC (2026).
What roof documents should a buyer collect before closing?
The roof’s install/replacement year (seller disclosure, building permit or contractor invoice), a home inspection covering the roof, and — for older roofs — an insurer-requested roof inspection with photos. If there’s a wood stove/fireplace, add a separate WETT certificate; it’s not a roof document. Sources: Rates.ca / Merit Insurance (2026).
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