The Complete Homeowner's Guide to Roof Repair in 2026

The Ontario Homeowner's Complete Guide to Roof Repair Services (2026)

Ontario’s diverse and extreme climate presents a unique battleground for residential roofing. From the blistering, humid summers in the Greater Toronto Area to the severe, snow-laden winters of Northern Ontario, a roof in this province endures a relentless cycle of thermal shock, ultraviolet degradation, and heavy moisture. For the Ontario homeowner, the roof is the first line of defense against the elements, and keeping it in optimal condition is paramount to protecting the structural integrity and value of the home.

The housing stock in Ontario is as varied as its weather, and each style brings its own set of roofing challenges. If you own a century-old Victorian home in downtown Toronto or Hamilton, you are likely dealing with steep, complex roof lines, outdated decking materials, and legacy ventilation systems. Homeowners in the sprawling suburban subdivisions of Mississauga, Brampton, or Ottawa often face premature shingle failure due to builder-grade materials or improper attic ventilation installed during massive construction booms. Meanwhile, those with properties in Muskoka's cottage country or along the wind-whipped shores of Lake Huron and Georgian Bay must contend with falling pine branches, extreme ice damming, and severe lake-effect wind shear.

This comprehensive guide is built specifically for Ontario homeowners facing roof repair decisions in 2026. Generic, American-centric roofing advice does not account for the realities of the Ontario Building Code (OBC), the Workplace Safety and Insurance Board (WSIB) requirements, our specific freeze-thaw cycles, or the current labor market in the province. Whether you are dealing with a sudden emergency leak, raccoons tearing through your shingles, or aging flashing around your chimney, this guide covers everything you need to know. We will break down accurate 2026 pricing in Canadian dollars, regulatory requirements, seasonal strategies, and exactly how to hire the right Ontario professional to ensure your roof is repaired safely, legally, and permanently.

Roof repair is a broad term that encompasses everything from minor localized patching to significant structural remediation. It is critical to understand the specific category of repair your home requires, as this dictates the cost, the required skill level of the contractor, and whether municipal permits are necessary under the Ontario Building Code. Roof repair work in Ontario generally falls into five distinct categories:

• Emergency Patching and Tarping When severe Ontario storm systems—such as summer derechos or winter blizzards—cause sudden catastrophic damage, emergency tarping is the immediate triage required to prevent water from destroying the home’s interior. This service is temporary. Roofers will deploy heavy-duty, UV-resistant tarps, securing them with furring strips and cap nails directly into the roof deck to provide a watertight seal until permanent repairs can be executed. This is highly common in the GTA and Southern Ontario following high-wind events.
• Localized Material Replacement (Shingles, Metal Panels, Cedar Shakes) This is the most common form of roof repair. It involves removing a specific section of damaged, blown-off, or prematurely aging roofing material and blending new materials into the existing roof system. For asphalt roofs, this requires carefully breaking the tar seal of the surrounding shingles, removing the nails, replacing the underlayment if necessary, and weaving in new shingles. The primary challenge here is color matching, as UV exposure causes existing shingles to fade over time.
• Flashing, Valley, and Penetration Repairs More than 80% of roof leaks in Ontario occur not in the field of the shingles, but at penetrations and transitions. This category includes repairing or replacing the metal flashing around chimneys, skylights, plumbing vent boots, and roof-to-wall transitions (step flashing). It also includes repairing roof valleys (the V-shaped intersections where two sloping roofs meet) which handle the highest volume of water runoff. In Ontario, freeze-thaw cycles aggressively degrade the sealants and mortar surrounding these areas, making flashing repair a high-priority maintenance task.
• Ventilation and Insulation Correction While technically residing in the attic, ventilation issues directly manifest as roof damage. If an Ontario roof is suffering from chronic ice damming, "attic rain" (winter condensation freezing and then melting), or curled shingles, the root cause is usually trapped heat and moisture. Repairing this involves installing new soffit baffles, cutting in ridge vents, replacing static turtle vents with maximum-flow roof vents, or sealing bypasses where conditioned air escapes into the attic space.
• Structural and Decking Sheathing Repairs If a leak has gone unaddressed for too long, the wooden decking beneath the shingles (typically OSB or plywood) will rot, creating a "spongy" or sagging roof. Repairing this requires a localized tear-off of the roofing materials down to the rafters. The rotted wood is cut out and replaced with new exterior-grade sheathing. Depending on the extent of the damage, if rafter tails or trusses are compromised, this crosses from a basic repair into a major renovation, which legally requires a structural building permit from your local Ontario municipality.

Roof repair pricing has seen steady increases due to inflation, rising costs of petroleum-based materials (like asphalt shingles), and a sustained shortage of skilled trades labor across the province. Below is a detailed breakdown of average roof repair costs for Ontario homeowners in 2026. Please note that all reputable contractors will charge 13% Harmonized Sales Tax (HST) on top of these figures.

• Minimum Service Call / Inspection — $250 – $400 (average $300)
• Replace Localized Missing/Damaged Shingles (10-20 shingles) — $350 – $600 (average $450)
• Emergency Tarping Installation (Standard Size) — $400 – $800 (average $600)
• Plumbing Vent Boot Replacement (per vent) — $250 – $450 (average $350)
• Standard Chimney Re-flashing (Base and Counter Flashing) — $600 – $1,200 (average $900)
• Skylight Leak Repair (Re-flashing and sealing) — $500 – $1,000 (average $750)
• Roof Valley Flashing Repair/Replacement (per valley) — $700 – $1,500 (average $1,100)
• Animal Damage Patching (Raccoon hole repair through decking) — $500 – $900 (average $700)
• Plywood Decking Replacement (per 4x8 sheet, during repair) — $100 – $200 (average $150)
• Ice Dam Removal (Steam method, per hour) — $300 – $500 (average $400)
• Ridge Vent Installation (per linear foot) — $25 – $40 (average $32)
• Fascia Board Replacement (per linear foot) — $20 – $35 (average $28)
• Caulking and General Sealant Touch-ups — $200 – $400 (average $300)

Regional Pricing Variations in Ontario

Because Ontario is a massive province with diverse local economies, you should adjust these baseline averages based on where your property is located:

• Greater Toronto Area (GTA): Expect costs to be 15% to 20% higher. The increased cost of living, vehicle insurance, travel delays due to gridlock, and higher demand allow contractors to command premium rates. Parking logistics and permits for skips in dense Toronto neighborhoods also add hidden costs.
• Northern Ontario (Sudbury, Thunder Bay, Sault Ste. Marie): Expect costs to be 20% to 25% higher. The primary driver here is the cost of shipping materials long distances and the extensive travel time required for contractors to reach properties. Additionally, the shorter working season compresses demand into a few brief months.
• Cottage Country (Muskoka, Haliburton, Kawarthas): Expect costs to be 15% to 30% higher. Island properties or remote water-access-only cottages incur massive logistical fees, as materials and crews must be transported by barge.
• Eastern Ontario (Ottawa, Kingston) & Southwestern Ontario (London, Windsor): These regions generally align closely with the baseline averages provided above, though highly localized spikes can occur following regional storm events.

Understanding the itemized price list is only half the battle. When a roofing contractor provides an estimate, they are calculating several variable factors specific to your home. Here are the most significant factors that will drive your Ontario roof repair costs up or down:

• Roof Pitch (Steepness) and Height In Ontario, safety regulations strictly dictate how tradespeople work at heights. A standard walkable roof (a pitch of 4/12 to 6/12) is faster and cheaper to work on. However, if your roof exceeds a 7/12 pitch, or if it is a two- or three-story home, the contractor must deploy extensive fall-arrest systems, roof jacks, and specialized scaffolding. This slows down the work considerably and results in a "steep charge" or "height premium" on your invoice.
• Property Age and Housing Type Working on an 1890s Victorian home in Cabbagetown is vastly different from repairing a 2010s tract home in Vaughan. Older homes often have spaced plank decking instead of solid plywood, requiring more complex substrate repairs before shingles can be laid. Furthermore, homes built before the late 1980s may contain asbestos in older roofing mastics or tiles, triggering expensive environmental abatement protocols.
• Accessibility and Logistics If the contractor cannot back their truck up to your house, costs go up. In dense urban centers like downtown Toronto, tightly packed houses mean materials must be carried by hand down narrow alleyways, and debris must be manually hauled out rather than thrown directly into a bin. Protecting a neighbor's adjacent property also requires additional setup time.
• Material Types While standard architectural asphalt shingles are relatively inexpensive, repairing a slate roof, a genuine cedar shake roof, or a standing seam metal roof requires highly specialized (and expensive) artisans. A slate tile repair alone can cost three times as much as an asphalt patch simply due to the fragility of the material and the rarity of the skill set.
• Underlying Water Damage A water stain on your ceiling is merely a symptom; the disease is what lies beneath the shingles. A quote that begins as a $450 shingle replacement can easily balloon to a $1,500 structural repair once the contractor removes the shingles and discovers that the underlying OSB decking has turned to mush, requiring extensive carpentry to fix.
• Urgency and Time of Year If you demand a contractor out to your home at 2:00 AM on a Sunday during a rainstorm, you will pay a massive emergency premium. Similarly, attempting a repair in the dead of an Ontario winter requires specialized heating equipment to ensure shingles remain pliable and seal properly, which inflates the labor costs.
• Permit Fees and Inspections If your repair involves altering the structure of the roof (e.g., cutting a new skylight or repairing a crushed truss), municipal permit fees apply. Beyond the strict cost of the permit (which varies by municipality from $100 to over $300), the administrative time the contractor spends drawing up plans and waiting for city inspectors will be baked into your quote.
• Labor Market Conditions Ontario is currently experiencing a profound shortage of skilled trades workers. Reputable, WSIB-insured, properly trained roofing contractors are in high demand and low supply. This simple economic reality naturally drives up labor rates across the board.

Ontario’s climate dictates the rhythm of the roofing industry. Timing your repair properly can save you money, ensure a higher quality installation, and prevent collateral damage to your home.

Winter (December to February): The Emergency Season Winter is the most hostile time for roof repairs in Ontario. Standard asphalt shingles become brittle in freezing temperatures; if bent, they will snap. Furthermore, the thermal sealant strip on the back of shingles requires radiant heat from the sun to activate and bond the roof together. If a repair must be done in winter, contractors must manually hand-seal each shingle with roofing cement, a slow and messy process. During these months, most reputable companies strictly focus on emergency leak mitigation, ice dam removal, and temporary tarping, deferring permanent repairs until the spring thaw.

Spring (March to May): The Discovery Season As the snow melts and the heavy spring rains of April begin, homeowners suddenly discover all the damage inflicted over the winter. This leads to a massive spike in phone calls to roofing companies. Spring is a difficult time for scheduling; contractors are booked solid, and persistent rainy days cause constant delays and rescheduling. If you require spring repairs, it is best to book your contractor in late winter before their calendar fills up.

Summer (June to August): The Prime Season Summer offers long daylight hours and predictable weather, making it the prime season for major roofing work. However, July and August in Southern Ontario often bring extreme heat and high humidity. When ambient temperatures hit 30°C (86°F), the surface of a dark asphalt roof can exceed 65°C (150°F). At these temperatures, asphalt shingles become incredibly soft and easily scuffed by workers' boots. To mitigate this, Ontario roofing crews often start work at sunrise and halt by early afternoon.

Fall (September to November): The Optimal Season Fall is universally considered the best time for roofing in Ontario. The weather is crisp and dry, which allows crews to work comfortably all day. Temperatures are cool enough that shingles do not scuff, yet warm enough that the adhesive thermal strips activate perfectly. Homeowners also scramble in the fall to prepare their homes for the coming winter, creating a "fall rush." Because it is the optimal season, expect contractors to charge premium rates and have tight schedules.

Navigating the bureaucracy of home repair is crucial. The structural integrity and safety of residential properties in the province are governed primarily by Part 9 of the Ontario Building Code (OBC) - Housing and Small Buildings. Ignorance of the code is not a legal defense, and failing to obtain necessary permits can result in municipal stop-work orders, fines, voided home insurance policies, and severe complications when attempting to sell your property.

When You DO NOT Need a Permit

In almost all Ontario municipalities, purely cosmetic or "like-for-like" maintenance repairs do not require a building permit. If you are tearing off old asphalt shingles and putting on new asphalt shingles, patching a hole, replacing the metal flashing around a chimney, or swapping out a damaged plumbing vent boot, you are free to proceed without municipal oversight. The structure of the home is not being altered.

When You DO Need a Permit

The moment a repair moves from the surface layer into the structural framing, the OBC gets involved. You will likely require a building permit if your repair involves:

• Replacing, cutting, or altering roof trusses or rafters (e.g., repairing damage from a fallen tree).
• Installing a new skylight where none existed before, which requires cutting through roof joists.
• Changing the slope or pitch of the roof to resolve drainage issues.
• Upgrading the roofing material to something significantly heavier than the original design (e.g., switching from lightweight asphalt to heavy slate tiles or concrete tiles), which requires a structural load assessment.
• Major decking replacements that alter the structural diaphragm of the roof.

OBC Specifics for Roofing

When repairs are executed, they must meet current OBC standards, even if the house is older. For example, the OBC strictly mandates the use of eave protection (commonly known as Ice and Water Shield). The code requires that this waterproof membrane extend from the edge of the roof up the slope to a line not less than 900 mm (about 3 feet) past the inside face of the exterior wall. This is specifically designed to combat Ontario’s notorious ice dams. If your contractor is doing a repair near the eaves and does not apply this membrane, they are violating the building code.

Municipal enforcement varies wildly. The City of Toronto has strict by-law enforcement and active building inspectors, whereas rural, unorganized townships in Northern Ontario may have very little municipal oversight. Regardless of enforcement, insisting that your contractor follows the OBC protects your largest financial asset.

The roofing industry has a notoriously low barrier to entry, which unfortunately attracts unscrupulous "storm chasers" and fly-by-night operators. Hiring the right contractor in Ontario requires doing your due diligence. Follow this step-by-step verification process to ensure you are hiring a legitimate professional.

• Verify WSIB Coverage (Mandatory) The Workplace Safety and Insurance Board (WSIB) provides no-fault liability insurance for workplace injuries. In Ontario, construction is a mandatory coverage sector. If an uninsured roofer falls off your roof, you, the homeowner, can be sued for their medical bills and lost wages. Always demand a WSIB Clearance Certificate from the contractor. You can independently verify the certificate number on the WSIB Ontario website to ensure their account is active and in good standing.
• Confirm Commercial General Liability (CGL) Insurance Mistakes happen. A worker could drop a hammer through your skylight, or an improperly secured tarp could blow off during a rainstorm, causing $50,000 in water damage to your drywall and hardwood floors. Ensure your contractor carries a minimum of $2,000,000 in Commercial General Liability insurance. Ask to see their certificate of insurance and verify that the policy is not expired.
• Check Working at Heights Certification The Ontario Ministry of Labour (MOL) mandates that any worker exposed to a fall hazard of 3 meters (10 feet) or more must possess a valid, MOL-approved Working at Heights training certification. A reputable contractor will ensure all their employees are certified. If a Ministry inspector drives by and sees unharnessed, uncertified workers on your roof, they will shut the site down immediately.
• Beware of Out-of-Town "Storm Chasers" After a major hailstorm or wind event in Ontario, out-of-province contractors often flood the area, knocking on doors and offering cheap, immediate repairs. Once the work is done and they leave town, you have no recourse if the repair fails. Always hire a contractor with a verifiable, local physical address in your region of Ontario.
• Get It in Writing Never accept a verbal quote. Under the Ontario Consumer Protection Act, you have specific rights regarding home renovation contracts. Your contract must include a detailed itemized breakdown of the work, the exact brand and line of materials being used (e.g., "IKO Dynasty Shingles"), the start and completion dates, and a clear breakdown of the payment schedule. Never pay 100% upfront; a standard deposit is 10% to 30% to cover initial materials.

With the rising cost of living in Ontario, it is tempting to pull out the ladder and tackle a roof repair yourself. However, roofing is incredibly dangerous. Every year in Ontario, homeowners suffer catastrophic injuries or fatalities from ladder and roof falls. Furthermore, amateur repairs often cause more damage than they fix.

What Ontario Homeowners Can Legally and Safely DIY

• Visual Inspections: Use binoculars from the ground to inspect for missing shingles, cracked caulking, or sagging eavestroughs.
• Gutter Cleaning: If you have a single-story home and can work safely from a sturdy step-ladder, cleaning leaves and debris from your eavestroughs is a great DIY task that prevents water backup.
• Attic Inspection: Going into your attic with a flashlight during a heavy rainstorm or in the dead of winter (looking for frosted nail heads or wet insulation) is an excellent way to diagnose a roof issue safely from the inside.
• Minor Ground-Level Caulking: Re-caulking a leaky downspout joint near the ground is a safe weekend chore.

What MUST Be Left to the Professionals

• Walking on Pitched Roofs: Unless you are trained in fall arrest systems and own proper OSHA-approved safety harnesses tied to a secure roof anchor, you should not be walking on an Ontario roof. Morning dew, hidden moss, and loose shingle granules make roofs incredibly slippery.
• Replacing Flashing: Properly bending, cutting, and integrating metal step flashing into a brick chimney requires specialized metal brake tools and advanced knowledge of water shedding. Slapping roofing tar over a leak is a temporary, messy hack that professionals will have to undo later at a higher cost.
• Replacing Underlayment and Decking: Ensuring that the ice and water shield is perfectly adhered to the deck and overlaps correctly is critical to surviving an Ontario winter. Mistakes here lead to slow, hidden leaks that rot your framing.
• Warranty Concerns: Major shingle manufacturers utilized in Ontario (such as BP, IKO, and CertainTeed) explicitly state in their fine print that materials must be installed by certified professionals. If you DIY a repair improperly, you risk voiding the 25-to-50-year warranty on your entire roof system.

The Ontario environment uniquely stresses residential roofs, resulting in several highly specific, recurring issues. Knowing these common problems allows you to communicate effectively with your contractor.

• 1. The Problem: Ice Damming
  • The Cause: Extremely common in Ontario. Heat escapes from the living space into the poorly insulated attic, melting the snow on the upper roof. The water runs down to the eavestrough (which is exposed to freezing air) and refreezes. This creates a dam of ice, causing subsequent melting water to back up under the shingles and into the house.
  • The Solution: The immediate repair is using steam equipment to melt the ice safely without damaging shingles. The permanent fix is increasing attic floor insulation (e.g., blown-in cellulose) to R-60 (the current Ontario standard) and ensuring proper soffit ventilation so the roof deck remains cold. Cost: $400 for emergency removal; $1,500–$3,000+ for insulation upgrades.
• 2. The Problem: Wind-Torn Shingles (Creasing and Blow-Offs)
  • The Cause: Homes along the shores of the Great Lakes and in un-sheltered rural areas face high wind shear. If shingles were installed during cold weather and didn't seal properly, or were high-nailed by sloppy installers, the wind catches them, bending them back (creasing) or ripping them off entirely.
  • The Solution: A contractor will remove the damaged shingles, inspect the underlayment, and weave in new shingles. For wind-prone areas, contractors should use a 6-nail per shingle pattern rather than the standard 4-nail pattern. Cost: $400–$600.
• 3. The Problem: Animal Intrusion
  • The Cause: Toronto is famously the "Raccoon Capital of the World," but squirrels and birds cause issues province-wide. Animals seeking warmth will literally tear off shingles and chew through rotted plywood decking to nest in your attic.
  • The Solution: First, a wildlife removal company must safely evict the animals and install a one-way door. Once clear, a roofer must patch the hole in the decking with new plywood, install heavy-gauge galvanized steel mesh over the weak point, and re-shingle. Cost: $500–$900 (plus wildlife removal fees).
• 4. The Problem: Degraded Chimney Flashing
  • The Cause: Ontario's freeze-thaw cycles wreak havoc on masonry. The mortar joints in a brick chimney absorb water, freeze, and crack, pulling the metal flashing away from the brick and leaving a gaping hole for water to enter.
  • The Solution: A roofer must grind out a channel in the brick mortar, insert new custom-bent metal counter-flashing, and seal it with high-grade polyurethane caulking (not cheap silicone). Cost: $600–$1,200.
• 5. The Problem: "Attic Rain" (Winter Condensation)
  • The Cause: In modern, tightly sealed Ontario homes, excessive indoor humidity (from showers, cooking, and humidifiers) bypasses the vapor barrier and enters the attic. In January, this moisture freezes solid onto the underside of the roof deck. When a mild spell hits in February, the frost melts all at once, raining down on your insulation and seeping through your ceiling, mimicking a roof leak.
  • The Solution: This requires a ventilation repair. The contractor must clear blocked soffits, install baffles, upgrade the roof exhaust vents, and seal bathroom exhaust fans securely to the outside. Cost: $800–$2,000 depending on the scope.

Roof repairs are often sudden, unbudgeted expenses. Fortunately, Ontario homeowners have several avenues to offset the costs through government rebates, specialized financing, and strategic borrowing.

Government and Utility Rebate Programs If your roof repair is directly tied to an energy efficiency upgrade—such as addressing the root cause of ice dams by upgrading attic insulation and ventilation—you may qualify for significant rebates. While the Canada Greener Homes Grant underwent transitions, programs like the Enbridge Home Efficiency Rebate Plus (HER+) often operate in tandem with provincial initiatives. Under these programs, if a certified energy advisor conducts a pre- and post-retrofit audit showing improved attic air-sealing and insulation (which often involves roof ventilation repairs), you can receive thousands of dollars in rebates. Pure cosmetic shingle replacements, however, do not qualify for energy rebates.

PACE Programs (Property Assessed Clean Energy) Several Ontario municipalities offer PACE financing for home improvements that increase energy efficiency and weather resilience. For example, the City of Toronto offers the Home Energy Loan Program (HELP), and Ottawa offers the Better Homes Ottawa Loan Program. These programs provide low-interest loans where the cost of the repair/upgrade is attached to your property tax bill rather than your personal credit. If you sell the house, the loan stays with the property.

Manufacturer Rebates During the spring and fall seasons, major roofing material manufacturers (like Owens Corning, GAF, and CertainTeed) frequently offer mail-in rebates for homeowners who upgrade to premium architectural shingles or full-system weatherproofing packages. Always ask your contractor if any seasonal manufacturer promotions apply to your required materials.

Traditional Financing If you face a catastrophic $5,000 structural repair and lack liquid cash, a Home Equity Line of Credit (HELOC) is the most cost-effective borrowing method, offering significantly lower interest rates than credit cards or unsecured personal loans. Many large Ontario roofing companies also partner with third-party consumer finance lenders (like Financeit) to offer "Don't pay for 12 months" or low-monthly-payment plans directly at the kitchen table.

Your roof is the primary shield protecting your family, your possessions, and the structural integrity of your Ontario home. When a repair is necessary, time is of the essence; ignoring a minor drip today guarantees major rot and structural decay tomorrow.

Remember these vital takeaways for 2026:

• Act Quickly: Small repairs cost $400; ignoring them turns them into $3,000 structural nightmares.
• Verify Credentials: Never let a worker onto your property without physical proof of WSIB coverage, $2M liability insurance, and valid Working at Heights certification.
• Understand Your Climate: Ontario's harsh freeze-thaw cycles mean proper ventilation and ice-and-water shielding aren't optional—they are critical to survival.
• Don't Risk DIY: The high rate of ladder injuries and the risk of voiding your manufacturer warranties make professional hiring the only smart choice.

Finding a trustworthy roofing contractor in a crowded, noisy market can be daunting. You don't have to guess who is qualified. To connect with thoroughly vetted, highly rated, and fully insured local Ontario roofing professionals, use GetAHomePro's comparison tools today. Get multiple competitive quotes, compare verified reviews, and secure your home against the next storm with confidence.

1. Do I need a permit to fix a leak in my roof in Ontario? No. Standard leak repairs, such as replacing missing shingles, swapping a plumbing vent boot, or fixing flashing, are considered maintenance and do not require a building permit under the Ontario Building Code. Permits are only required if you are altering the structural framing (trusses/decking) or changing the roof’s pitch.

2. Can you repair an asphalt roof in the winter in Ontario? Yes, but it is not ideal. Winter repairs are usually limited to emergency tarping or patching. Because asphalt shingles become brittle in the freezing cold and the thermal adhesive won't naturally seal without the sun's heat, winter repairs require manual hand-sealing and take longer, resulting in higher labor costs.

3. Will my home insurance cover the cost of a roof repair? It depends on the cause. If the damage was caused by an "Act of God" or a sudden, unexpected event—like a tree falling on your house during a windstorm or severe hail damage—insurance typically covers it (minus your deductible). However, if the leak is caused by gradual wear and tear, old age, or poor maintenance, insurance will deny the claim.

4. Can a roofing contractor perfectly match my existing shingles? Usually, no. Even if the contractor sources the exact brand and color name of your original shingles, the new shingles will look different. Your existing roof has been exposed to years of UV radiation, causing fading. A patch will almost always be slightly visible.

5. How long does a typical roof repair take? Most standard roof repairs—such as patching a hole, replacing a valley, or fixing a chimney flashing—are completed within a single day. Often, the work only takes 2 to 4 hours. However, emergency structural repairs or extensive rot remediation can stretch into a two- or three-day project.

6. What is the difference between a roof replacement and a roof repair? A repair is highly localized, addressing damage in a specific 5-to-10 square foot area while leaving the rest of the roof intact. A replacement involves tearing off all existing materials down to the wooden decking across the entire home and installing a brand-new, comprehensive roofing system.

7. Why does my roof leak only in the winter? If your roof only leaks when there is snow on it, but never during a summer rainstorm, you are likely experiencing either ice damming or "attic rain" (condensation freezing to the underside of the roof deck and then melting). Both are issues related to poor attic insulation and ventilation, not necessarily failed shingles.

8. How much is a minimum service call for a roofer in Ontario? In 2026, a reputable, fully insured Ontario roofer will typically charge between $250 and $400 just to dispatch a truck, set up ladders, and perform a basic inspection and minor caulking/patching. This covers their fuel, travel time, and baseline insurance costs.