Few home repairs feel as urgent — or as expensive — as a leaking roof on a cold Ottawa morning. The good news: most Ottawa roof problems are repairable for far less than a full replacement, especially when caught early. The bad news: Ottawa's brutal freeze-thaw cycles, ice dams, heavy snow loads, and intense summer UV mean roofs here fail faster than anywhere else in southern Ontario. This complete 2026 guide gives Ottawa homeowners straight answers on what roof repairs actually cost, how to identify the problem you're seeing, when to repair vs. replace, and how to hire a roofer who won't pres...
Ottawa subjects asphalt shingle roofs — by far the most common roofing material in the city — to one of the most punishing climate combinations in Canada. Average annual snowfall exceeds 220 cm, winter lows regularly hit -30°C, and the city averages 35+ freeze-thaw cycles per year. Each freeze-thaw event flexes shingles, cracks sealant strips, and works ice into seams and around flashings. Ice dams form when warm interior air leaks into the attic, melts the snow on the roof deck, and refreezes a...
After hundreds of inspections per year, Ottawa roofing contractors consistently report the same recurring problems: (1) ice dam leaks at eaves and valleys (peak December–March); (2) cracked or curled shingles from UV degradation (typical years 12+); (3) missing shingles after windstorms (Ottawa aver...
Ottawa roofers use a few simple rules. If your roof is under 12 years old and you have isolated damage (a few missing shingles, one failed flashing), repair is almost always the right answer. If your roof is 18+ years old and you're seeing widespread granule loss in your gutters, multiple leaks, cur...
Ottawa roof repair pricing varies enormously depending on the issue, your roof's accessibility, and whether you need emergency service. The numbers below reflect verified 2026 pricing from active Ottawa roofing contractors and exclude emergency surcharges, which typically add 30–60% during winter storm events. All prices include HST, materials, labour, and basic disposal. Always get three quotes for any repair over $500 — pricing variance between Ottawa roofers can be 40% or more for the same wo...
Replacing a single missing shingle, sealing a small leak around a plumbing vent boot, re-securing lifted shingles, or sealing a roof penetration typically lands in this range. Most Ottawa roofers have a minimum trip charge of $250–$400, so even tiny jobs rarely come in below that. If you're seeing d...
Most legitimate Ottawa repair calls fall here: replacing 10–30 shingles, replacing a damaged section of valley metal, installing new step flashing where the roof meets a wall, replacing a full pipe boot assembly, repairing soffit/fascia damage from an ice dam, or installing roof and soffit ventilati...
Full chimney flashing rebuilds, replacing rotted roof decking under multiple shingle areas, replacing entire valley systems on a complex roof, partial roof reroofing of one or two slopes, and substantial soffit/fascia/eavestrough replacements. At this price point, you're often within striking distan...
Most Ottawa homeowners describe their roof problem as 'a leak' — but where the water shows up inside almost never matches where it's actually entering the roof. Water travels along rafters, sheathing, and wall framing before dripping through your ceiling. Properly diagnosing the source is the difference between a $400 repair that lasts and a $400 repair that fails the next time it rains. Here's how Ottawa roofers approach diagnosis.
Stains around a chimney or wall intersection almost always point to failed step flashing or cricket flashing (the diverter behind the chimney). Stains in a corner where two slopes meet point to valley issues. Stains directly above a bathroom or kitchen often mean a failed plumbing vent boot. Stains ...
From the ground (do not climb your roof — Ottawa roof falls cause serious injuries every year), use binoculars to scan the entire roof surface. Look for missing shingles, lifted edges, curling, dark patches indicating granule loss, damaged or missing flashing around chimneys and vents, and any visib...
Ice dam damage is the single most common roof repair in Ottawa from December through March, and it's one of the most misunderstood. An ice dam is not caused by your roof — it's caused by warm air escaping from your attic, which melts snow on the upper roof, allowing water to run down and refreeze at the cold eaves and form a dam. Once the dam forms, additional meltwater backs up behind it and is forced under the shingles by capillary action. The result: water running down your interior walls, so...
Permanent ice dam prevention requires fixing three things at once: (1) Stop the warm-air leaks from the heated space into the attic — air sealing pot lights, attic hatches, plumbing penetrations, and ductwork. (2) Add insulation to bring the attic floor to R-50 or higher (current Ontario code minimu...
Ottawa's roofing market includes excellent established contractors — and a steady stream of out-of-town storm-chasers who knock on doors after every windstorm, demand cash deposits, and disappear before the work is finished. Protect yourself by following the hiring rules every reputable Ottawa roofer wants you to follow.
Before paying a deposit or signing a contract, verify: (1) the company has a verifiable Ottawa-area address (not just a PO box); (2) WSIB clearance certificate (request a current one from the Ontario WSIB website); (3) at least $2 million in commercial general liability insurance, with the insurer's...
Walk away from any roofer who: shows up uninvited claiming they 'noticed damage from the road'; demands a cash deposit or refuses cheque/credit card payment; pressures you to sign a contract on the spot or within 24 hours; quotes a dramatically lower price than other quotes (>30% below market is alm...
We don't recommend DIY roof repairs for most Ottawa homeowners, and not because of any pretense — Ottawa roof falls cause life-changing injuries and deaths every single year. Beyond the safety risk, improperly executed roof repairs almost always cost more than professional work because: warranties are voided, shingle sealant strips are ruined by foot traffic, hidden damage gets missed, and the repair often fails within a season. That said, a few minor maintenance tasks are reasonable for confide...
Reasonable DIY: cleaning eavestroughs and downspouts, removing snow from the lower 4 feet of the roof with a roof rake from the ground, replacing minor flashing seal failures with roofing sealant on a dry day, and visual inspections from the ground. Always pro: anything requiring you to walk on the ...
Most Ottawa roof repairs cost between $350 and $2,800. Small repairs like replacing a few missing shingles or sealing a single leak typically run $350–$800 (driven by the $250–$400 minimum trip charge most roofers have). Mid-range repairs like ice dam damage repair, valley metal replacement, or step flashing rebuilds run $800–$2,800. Major repairs involving chimney flashing rebuilds or partial reroofing run $2,800–$12,000 — at which point you should get quotes for both repair and full replacement, since you may be approaching the break-even point.
Yes — even small leaks that aren't actively dripping cause hidden damage. Water that gets under shingles soaks the underlayment and decking, leading to rot, mould, and ice damming the following winter. Place a bucket under any active drip, document the location with photos and video, and call a roofer within 24–48 hours. For after-hours emergencies (water actively flowing during a storm), most reputable Ottawa roofers offer 24/7 emergency tarp service for $400–$700 to stop the active leak until proper repairs can be made.
Ice dams form when warm air leaks from your heated space into the attic, melts snow on the upper roof, and the meltwater refreezes at the cold eaves — creating a barrier that backs water under your shingles. The permanent fix has three parts: (1) air-seal all penetrations between the heated space and the attic; (2) insulate the attic floor to at least R-50; and (3) ventilate the attic with adequate soffit intake and ridge exhaust so any residual heat is exhausted before melting snow. Roof rakes only treat the symptom — they remove snow within 4 feet of the eaves to prevent the dam from forming.
It depends on the cause. Most Ottawa home policies cover roof damage from sudden, accidental events — wind, hail, fallen trees, falling ice — but not damage from gradual wear, age, or lack of maintenance. Ice dam damage is sometimes covered (water that infiltrates your home as a result of an ice dam), sometimes not (the ice dam itself), and varies by insurer. Always document damage with dated photos before any repair, get a written estimate from a licensed roofer, and call your insurer before paying for any repair to confirm what they'll cover and avoid invalidating your claim.
Start with three quotes from established Ottawa-area companies (verify a real local address, not just a PO box). Verify each contractor has current WSIB clearance, $2M+ liability insurance, written workmanship warranty (minimum 5 years), and three Ottawa-area references with photos and contact info. Walk away from anyone who shows up uninvited, demands cash, pressures same-day decisions, or quotes >30% below the market average. See [our complete contractor hiring guide](/guides/how-to-hire-a-contractor-in-ottawa) for the full 23-point checklist.