Fixing a leaking roof in Toronto generally costs between $350 and $1,500, depending on the cause, the roof type and how much damage there is. These are general estimates, and your written quote is the final price. If the roof is near the end of its life and needs replacing, a typical asphalt shingle roof on a detached home in the GTA generally costs between $8,000 and $18,000. Our roofers offer free quotes so you can compare your options and choose the right solution for your home.
Have a leak right now? Request a free roof inspection or call 647-771-1554.
Residence Dimensions
The size of your home is one of the biggest factors when fixing or replacing a roof. Roofers often price by the “square”, which equals 100 square feet of roof, and rates depend on the material, the pitch, and the condition of your roof. A visit from a roofer to assess the job may also carry a fee, which varies from company to company. Ask for a written quote so you know exactly what is included.
For homes outside Toronto, the same pricing rules apply. If you are in the Halton Hills area, you can read about our roof leak repairs in Georgetown to see how we find the source of a leak and what a repair usually involves.
Type of Roof and Degree of Slope
Two things that affect cost are the type of your roof and its pitch. Roof pitch is the angle, or slope, at which your roof is built, and the cost changes as the pitch changes. It is important to work out how much material is needed and which roofing material suits your slope best.
Common types of roof slopes are:
- Gable: Two sloping sides meet at a ridge in the centre of the house. This is the simplest and most common roof design.
- Gambrel: Often called a “barn roof”, it has two slopes on each side of the peak, with the lower slope steeper than the upper one.
- Mansard: A four-sided roof where each side has two slopes, and the lower slope is steeper.
- Pyramid: A single peak with four triangular sides sloping downward.
- Saltbox: Similar to a gable roof, but one side is much longer and lower than the other.
The gable roof is the most popular design, and it is usually the simplest and most affordable to build and repair. A gambrel roof, by comparison, needs more material, which can increase costs by about 10% to 15%.
The most popular roof design is a Gable roof, which is the simplest and most affordable to implement. A gambrel roof, by comparison, ends up requiring more material, which could end up increasing costs by 10% to 15%.
Roof Condition
Your roof’s existing state directly reflects whether or not you will
The current state of your roof decides whether you need a repair or a full replacement, and that has a big effect on cost. If the damage is limited, repairs may only be needed in certain areas.
One of the most common jobs is leak repair caused by worn-out or poorly installed shingles. The repair usually involves sealing the leak and replacing the faulty shingles. This type of repair generally costs between $350 and $1,500, depending on how much work is required and how much material is used. You can see examples of our completed projects.
| Average cost to repair a leaking roof | ||
| ranges from | $350 | $1500 |
If your roof needs replacing because of age, rotted boards or other damage, a typical asphalt shingle roof on a detached home in the GTA generally costs between $8,000 and $18,000. A reputable roofer will give you a free quote for repairing or replacing your roof.
| Average cost to replace a roof | ||
| ranges from | $8,000 | $18,000 |
Complexity of the Issue
Prices also change with how complex your roof and your problem are. Whether you are repairing or replacing, a professional should assess the roof first. The assessment looks at the number of storeys, the pitch of the roof, the number of chimneys and the condition of wall flashings. All of these factors affect the cost.
Common Causes of Roof Leaks and What Affects the Repair Cost
Most leaks start small and get worse over time. The cause of the leak decides how complex the repair is, and that is what drives the price.
| Cause | How hard is the repair? | What affects the price |
|---|---|---|
| Missing or damaged shingles | Simple | Number of shingles and roof pitch |
| Worn or cracked flashing | Moderate | Location (chimney, wall or vent) and access |
| Valleys | Moderate to complex | Length of the valley and condition of the metal and underlayment |
| Pipe boots and vents | Simple to moderate | Number of roof penetrations |
| Skylights | Moderate to complex | Whether the skylight needs resealing or replacing |
| Ice dams | Moderate | How much water has got under the shingles |
| Rotted decking | Complex | Area of damaged boards and whether shingles must come off |
Missing shingles let water reach the underlayment, and worn roof flashing around chimneys and walls is one of the most common leak points. Roof valleys carry a lot of water and can leak when the flashing or underlayment wears out. In winter, ice damming can push melted water under the shingles and into the attic.
Roofing Material
The material on your roof directly affects the cost. Asphalt shingles are the most common choice for homes and are usually the most affordable. Metal roofs are becoming more popular because they last a long time, are often made with recycled content and can improve energy efficiency. Premium materials such as slate, cedar and composite are also available, but they cost more. Metal usually costs considerably more than asphalt, and slate is often more expensive than both.
What Is Included in a Roof Leak Repair Quote?
A good quote should explain what will be done, not only the price. Ask whether it includes:
- Finding the true source of the leak. Water often travels along the decking before it shows up inside.
- Materials and labour for the repair.
- Repair or replacement of damaged flashing, shingles or sealant.
- A check of nearby areas for hidden damage.
- Cleanup and a warranty on the repair.
A quick patch that skips the root cause often leads to another leak. A roofer should inspect the area around the leak, not only the spot you can see inside.
Roofing Different Home Sizes
These examples are older estimates based on home size. Your roof area is usually larger than your floor area, and current prices depend on material, pitch, and condition, so your written quote may differ.
Cost of roof replacement on a 3,000 square feet house:
The estimated cost of replacing a roof on a 3,000 square foot house in a large city like Toronto ranges from about $9,000 to $12,000. The price varies with the material. Metal and solar roofing cost more than a basic asphalt roof.
Cost of roof replacement on a 2,200 square feet house:
For a 2,200 square foot house, estimates range from about $6,600 to $8,800. As noted above, the final price depends on the material you choose.
Cost of roof replacement on a $1,900 square foot house
Replacement costs depend on the type of problem, the severity of the damage and the complexity of the job. The more complex and damaged the roof, the higher the price. For a 1,900 square foot house, the usual range is about $5,700 to $7,600.
Cost of roof replacement on an 800-square-foot house:
For an 800 square foot house, rough estimates range from about $2,400 to $3,200. This depends on the material and on the type of roof. Replacing a steeper roof naturally costs more than a simple bungalow roof, and a material like slate is one of the more expensive choices.
What is the cost of roof repairs?
The exact price depends on the type of roof, the material, the extent of the damage and the skill needed for the repair. Most good roofers in Toronto will give you a free inspection and a quote. Roof repairs generally start from about $350.
What is the cost of leaky roof repairs?
In Toronto, leaky roof repairs usually start from about $350. A roofer can give an exact price after inspecting the site. The cost is lower when the damage is limited to a few areas, and it can rise if the roofer must also fix the cause of the leak and not only the visible damage.
What is the cost of repairing sagging roofs?
A sagging roof is a serious problem, and it usually points to a weakness in the structure. The solution is often an expensive one, such as replacing the whole roof. Repairs start from about $350, but the total depends on the size of the roof and the damage. Act quickly and hire a qualified roofer, because a sagging roof is a hazard for the people inside.
What is the cost of repairing metal roofs?
Roof repairs in Toronto generally start from about $350, and metal roofs are no different. Metal roof leaks often come from fasteners, seams or flashing, and repairs need metal-specific materials. Most roofers offer a free inspection and then quote a price based on the damage.
What to Do When Your Roof Is Leaking
- Contain the water. Place a bucket under the drip and move furniture and belongings away.
- Stay safe. Keep away from wet light fixtures and outlets, and never climb onto a wet roof.
- Document the damage. Take photos and notes with dates. You may need them for an insurance claim.
- Call a roofer. A professional can find the source and protect the roof until the repair is done.
Need help quickly? See our emergency roof repair in Mississauga service or call 647-771-1554.
Should You Repair or Replace Your Roof?
A small leak in an otherwise healthy roof can usually be repaired. If the roof is near the end of its life, has leaks in several places, or shows widespread curling and bare spots, replacement is often the better long-term investment. Our checklist on when it is time to replace your roof explains the main warning signs, and our guide to roof replacement cost in Etobicoke shows what to expect locally. For a wider view, see roofing cost in Ontario.
Toronto homeowners can reach us through our office for roofing in Etobicoke. We also handle roofing in Oakville and roofing in Mississauga. If a replacement is the right call, our roof financing options can help you spread the cost.
Will Home Insurance Cover a Roof Leak?
It depends on the cause and on your policy. Damage from a sudden event, such as a storm, may be treated differently from damage caused by age or wear. Contact your insurance provider before repairs start, take photos of the damage, and keep all receipts and written quotes.
Frequently Asked Questions
How much does it cost to fix a leaking roof in Toronto?
Most leak repairs generally cost between $350 and $1,500, depending on the cause, the roof type and the amount of damage. A roofer can give you an exact price after an inspection.
Can a leaking roof be repaired without replacing it?
Yes, in many cases. If the roof is otherwise in good condition, the leak can often be fixed by replacing shingles, flashing or sealant. If the roof is old or damaged in many places, replacement may make more sense.
Is a roof leak an emergency?
A small leak should be fixed soon, and a heavy leak should be treated as an emergency. Water can damage insulation, drywall, wiring and the roof structure quickly.
How do I find where a roof leak is coming from?
The leak is often above the visible stain, because water travels along the roof deck. A roofer will check flashing, vents, valleys and shingles around the area to find the true source.
Get Your Free Roof Leak Inspection
Do not wait for a small leak to become a big repair. Call 647-771-1554 or request a free quote online, and our team will inspect your roof and give you a written price.
