You just opened a roofing quote and the number staring back at you is somewhere in the five figures. Maybe it’s $12,000. Maybe it’s closer to $18,000. Your first reaction is probably some version of “are you serious?” I get it. I’ve been doing this work in Markham and across the GTA for over 30 years, and I still see that same look on homeowners’ faces when they see the number for the first time.
This article is for Markham and GTA homeowners who want to understand why roof replacement costs what it does and how to make informed decisions.
The question I hear most is: why is roof replacement so expensive? It’s a fair one, and you deserve a straight answer, not a sales pitch. The truth is, there are real reasons behind the cost, and once you understand them, the number makes a lot more sense.
This article breaks down exactly where your money goes. By the end, you’ll know what drives roof replacement costs, what to watch out for, and how to make a smart decision for your home, much like our detailed guide on how much a roof replacement costs in Markham.
What Goes Into Roof Replacement Costs?
The final cost of a roofing project comes down to several moving parts working together. The big ones are materials, labour, the size and shape of your roof, tearing off the old roof, hidden problems underneath, and the current state of the roofing market. Larger roofs need more materials and take longer to install, so roof size has a direct effect on the overall cost.
None of these costs exist in a vacuum. A steep roof with dormers and an old two-layer shingle job underneath is going to cost a lot more than a simple bungalow with a clean deck. The total cost usually reflects materials, labor costs, tear-off, and compliance-related items, not just one line item. That’s not a contractor making things up. That’s just how it works.
We’ll go through each of these in detail so nothing comes as a surprise.
Roofing Material: The Choice That Drives the Biggest Range in Price
The roofing material you choose is one of the biggest factors in your final cost, and it also determines how long your new roof will last before you need to go through this again. Standard asphalt shingles are popular because they’re affordable, easy to install, and often run about $3 to $6 per square foot. Overall roof cost can vary by square foot depending on the material, material quality, and installation complexity. Larger roofs also require more materials and longer installation times, which raises the total. Most roofs last anywhere from 20 to 70-plus years depending on what they’re made of, and that range is exactly why the price range is so wide. Premium materials also push pricing up, while premium roofing materials usually need more specialized labor. Using quality materials can also help balance upfront cost with better long-term performance, especially when you understand how long a roof lasts in Markham.
Here in Markham, material choice matters more than in a lot of other places. We deal with hard winters, heavy snow loads, and those freeze-thaw cycles that hit in early spring and late fall. Local weather conditions, including heavy rain, also affect material selection and the roof’s lifespan. Ice dams are a real problem in this part of York Region, and the wrong material or a sloppy installation can make them far worse. Whatever goes on your roof has to hold up to all of that, year after year, and it helps to understand ice dam causes, removal, and prevention in Markham.
Asphalt Shingles: The Go-To for Most Markham Homeowners
Asphalt shingles are still the most popular roofing material in Ontario, and for good reason. They’re cost effective, widely available, and when properly installed with good underlayment, they handle our winters well. Many homeowners also compare asphalt on a per-square-foot basis, often around $3 to $6 per square foot before market and scope differences. At Edmunds, we price asphalt shingle work at around $350 to $375 per square (that’s per 100 sq ft installed), depending on the shingle grade. On a typical Markham detached home, that works out to a starting price around $9,000, with our full range running from roughly $5,500 on the low end to $18,000 on the more complex end.
Not all asphalt shingles are equal, though. Standard asphalt shingles are the most common entry-level option and the least expensive, but they don’t hold up as well over time, especially in freeze-thaw conditions. Architectural shingles, like the IKO Cambridge, are thicker and more durable and are what most homeowners in Markham should be looking at. For better wind resistance and a longer lifespan, a premium shingle like the IKO Dynasty is the next step up. At Edmunds, we actually offer the Dynasty as a standard upgrade at no extra charge in many cases, because it performs meaningfully better in our climate.
Under ideal conditions, an asphalt shingle roof lasts 20 to 30 years. But Markham’s climate can push that toward the lower end if the installation isn’t done right. Ice dams form when heat escapes through your roof, melts the snow above, and refreezes at the cold eaves. Proper installation and ventilation help prevent conditions that trap moisture under shingles and shorten the roof’s lifespan. If your attic ventilation or underlayment isn’t up to spec, you’ll be dealing with ice dam damage well before those shingles reach the end of their life.
Metal Roofs: Higher Upfront, Lower Over Time
Metal roofing costs significantly more per square foot, and at Edmunds our metal roofing comes in at $750 to $950 per square installed. It’s durable and low maintenance, and it lasts 40 to 50 years. It costs more upfront, but over time it can save money because it lasts 40 to 50 years and needs relatively little upkeep. That’s a meaningful difference when you do the math. Over a 50-year period, you might replace an asphalt roof two or three times for the same money you’d spend once on metal.
Metal is also energy efficient. It reflects heat in summer, which helps keep cooling costs down, and it handles snow loads well in a Markham winter. It’s gaining traction across the GTA for exactly those reasons.
One component worth understanding here is the metal drip edge. This is a piece of metal flashing installed along the edges of the roof that directs water away from the fascia board and into the gutters. It prevents rot and water infiltration at the roof’s edge. Under the Ontario Building Code, a metal drip edge is required on all new roof installations. Some homeowners don’t realize this is a code-mandated part of every job, not an optional add-on. A properly installed drip edge adds a small cost to the project, but skipping it or cutting corners here leads to expensive problems down the road.
Other Roofing Material Options
Composite roofing is another premium option we offer, priced at around $750 per square. It mimics the look of natural materials but holds up better in our climate with lower maintenance demands. For homeowners who want the aesthetic of a high-end roof without the upkeep of cedar shakes or the weight of slate, it’s worth a look. A slate roof is another premium choice, but its weight and price make it a more specialized option. Some modern alternatives, such as a green roof, also exist, though they involve different structural and code considerations than a typical residential replacement.
Flat roofs, common on additions, garages, and some commercial properties in Markham, use different materials like TPO or EPDM. They require more regular maintenance than pitched roofs, but when installed properly by a professional roof installation contractor in Markham they’re a solid option for the right application.
Quick material comparison (From Edmunds pricing, Spring 2026):
Three-tab asphalt shingles: ~$350/square installed
Architectural shingles (IKO Cambridge): ~$360/square installed
Premium shingles (IKO Dynasty): ~$375/square installed
Premium composite shingles: ~$750/square installed
Metal roofing: ~$750–$950/square installed, with a typical lifespan of 40 to 50 years and lower maintenance that can make it a long-term cost-saving option
*Note the above are estimates that can vary based on the project and cost of materials at the time.
How Much Does a 2,000 Sq Ft Roof Replacement Cost in Markham?
For a typical 2,000 sq ft detached home in Markham, roof size is one of the biggest drivers of the total cost because larger roofs need more materials and more labor time. A standard architectural shingle replacement starts around $9,000 and can run to $18,000 or beyond depending on complexity. Average roof cost can vary widely, with many asphalt shingle replacements often falling in the $7,800 to $22,000 range, while metal roofs can average around $35,000 depending on scope and complexity. Those are real numbers based on what we actually quote in this area, not industry-wide averages pulled from somewhere else.
One thing that surprises people is that your roof’s actual square footage isn’t the same as your home’s footprint. Pricing can shift by square foot depending on material, pitch, and design complexity. A steeper pitch means more surface area, which means more material and more time. A 2,000 sq ft house with a steep hip roof will cost more to re-roof than a 2,000 sq ft bungalow with a simple gable. Bungalows, for what it’s worth, often come in slightly lower because they’re easier to access and load materials onto. At Edmunds, bungalows typically run about 5 percent less than a two-storey of the same size for that reason.
Complex roofs with dormers, skylights, and chimneys add meaningful cost. Each of those features requires custom flashing and more time to install properly. Features like these can add up to 10 percent to the overall job. A multi-storey home also adds to the bill because material delivery and worker safety both take more time and equipment. Premium roofing materials such as slate can last over 70 years, which helps explain the higher upfront price for homeowners prioritizing durability and curb appeal, especially when you factor in roof lifespan in Markham’s climate.
When you’re collecting quotes, make sure you’re comparing the same material grade, pitch factor, and scope of work. A quote that looks lower might just be using a cheaper shingle grade or leaving out the tear-off.
Labour Costs: What Is the Most Expensive Part of Replacing a Roof?
Labour is the most expensive part of replacing a roof, and labor costs often make up 40 to 60 percent of the total cost. That number shocks a lot of homeowners, but once you understand what goes into the overall cost, it makes sense. In Ontario, asphalt shingle replacements often run about $7,800 to $22,000, while metal roofs can average around $35,000 depending on complexity and materials.
A licensed roofing contractor in Ontario has real costs that don’t disappear just because they’re not standing on your roof right now. There’s WSIB (Workplace Safety and Insurance Board) coverage for every crew member, general liability insurance, vehicle costs, fuel, equipment, storage, training, contractor overhead, and the administrative side of managing jobs all factor in. The labor cost for roofing contractors also varies with job complexity, local market conditions, and the level of skilled labor required, which is exactly why professional roofing services in Canada emphasize safety, compliance, and long-term value. Payroll taxes, licensing fees, and the scope of work all affect the final quote and total cost. These are not made-up expenses. They’re what separate a professional operation from a cash-only deal you find on Facebook.
If a contractor quotes you a price that seems too good to be true and says they can skip permits to save you money, walk away. That’s not a deal. That’s a liability being transferred to you, and a reputable roof installation company in Markham will never cut those corners.
How Roof Pitch and Complexity Affect Labour
Steeper roofs cost more to work on because they’re slower and more dangerous. Factors like roof size, pitch, and accessibility significantly influence labour costs, which typically make up about 40 to 60 percent of the total replacement price. At Edmunds, steep pitches in the 8/12 to 12/12 range can add roughly 20 to 30 percent to installation costs because work is slower and requires added safety measures. That’s because steeper pitches require harnesses, fall protection equipment, and more careful work. Crews simply can’t move as fast, and safety measures are non-negotiable under Ontario’s occupational health and safety rules.
Complex roofs with multiple slopes, valleys, dormers, and chimneys demand more precision and more time. Design features like skylights and roof penetrations also add installation complexity, which affects labour cost depending on the job, local market conditions, and the crew’s experience. So does limited site access. In some Markham townhome complexes and tight lots, restricted access, tight spaces, delicate landscaping, or the need for extra property protection can add another 5 to 10 percent to the price, especially when you’re dealing with replacing a shared roof in Markham. If there’s no room for a dumpster or crews have to carry materials through a narrow passage, the labour time goes up.
Roof Installation in Winter: Why Timing Matters in Markham
Winter roofing is possible in Ontario, but it comes with real drawbacks tied to local weather conditions, especially snow, ice, and heavy rain. Cold temperatures slow the adhesive bonding process on asphalt shingles, and working on a snow-covered or icy steep pitch makes installation more hazardous and time-consuming, which raises labour costs.
The best window in Markham is late summer through early fall. The weather is stable, shingles seal properly, and contractors still have availability before the fall rush. If you wait until spring after a rough winter, every roofing company in the GTA is booked solid and you’re competing for slots. Booking early often saves money and definitely saves headaches.
The Tear Off: Why Removing Your Old Roof Costs More Than You'd Expect
Most homeowners assume the old roof just gets swapped out. What they don’t factor in is that removing the existing roof adds significant labour and logistical expense before any new materials even touch the deck.
Tear-off means removing all of the old shingles, nails, underlayment, and whatever else has accumulated over the years. A lot of homes in Markham’s established neighbourhoods were re-roofed once or twice before the current owners moved in. Multiple layers of old shingles mean more labour, more debris, and more disposal costs. At Edmunds, each additional layer of old shingles adds roughly 20 percent to the tear-off cost. That’s not a number we made up. That’s the real labour and disposal cost of pulling an extra layer off a roof. Winter weather can also make installation slower and more hazardous, which pushes labour costs higher.
Under the Ontario Building Code, whether the job is a roof add or a full tear-off affects cost, long-term performance, and code compliance. Layering new shingles over old ones is not acceptable for a full roof replacement, and it also prevents you from inspecting the deck underneath for damage.
Disposal fees are a real line item. Old shingles, nails, and underlayment are heavy, and depending on how many layers are coming off, a single job can generate several tons of debris. Estimates should also spell out dumpster rental alongside landfill or disposal charges, just as a thorough roofing repair service in Markham would itemize for you. Once the old roof is stripped, the crew gets its first clear look at the underlying deck, and that brings us to the next section.
Structural Damage and Hidden Costs: What They Find Under Your Old Roof
The tear-off reveals what’s been hidden for years, and sometimes that’s where the estimate changes. Removing the old roof also adds significant labor and logistical expense, and hidden issues like rotting wood or inadequate ventilation may only become visible once the old roof is removed, adding unforeseen costs. Structural damage underneath an old roof is discovered by contractors, not caused by them. The problems were already there.
Rotting or soft decking is one of the most common findings on Markham homes from the 80s and 90s, and it’s often caused by inadequate attic ventilation, which can trap moisture beneath roofing materials and shorten the roof’s lifespan over time rather than a leak. These repairs are not optional. You can’t install a new roof on compromised decking and expect it to perform or last. At Edmunds, plywood replacement runs $90 per sheet (4 x 8 ft). It’s a concrete, predictable cost once we know how many sheets need to go.
A reputable contractor will stop when they find a problem, show you what they found, explain what needs to be fixed, and give you a number before any additional work starts. That’s what honest roofing looks like. Skipping structural repairs to save money creates future leaks and far more expensive problems down the line.
Structural Requirements: The Cost That's Hard to Predict
The metal drip edge also gets installed at this stage. As noted earlier, this component is required under Ontario building codes. It directs water off the roof edge and away from the fascia, protecting the underlying deck from moisture getting in at the edge. It’s a small cost that prevents a large one.
Ice and water shield is another component that matters specifically in Markham. This is a self-adhering membrane installed along the eaves and in valleys to protect against ice dam infiltration. At Edmunds, ice and water shield is included as standard, adding about 5 percent to the job. An upgraded synthetic underlayment on the rest of the roof is optional and adds roughly another 10 percent, but it provides meaningfully better protection for our climate.
Permits and Local Building Codes in Markham
In Markham, a standard roof replacement with no structural changes does not require a building permit, but if structural work is involved, permit fees and local regulations can raise the overall cost. Where permits do come into play is when there’s a structural change to the roof construction itself. Municipalities enforce strict building codes covering safety and material standards, so compliance should be part of any legitimate quote. A good roofing contractor will tell you upfront whether your job requires one. If a company suggests skipping permits when they’re actually required, walk away.
Why Roofing Prices Have Gone Up in 2026
Roofing prices in Ontario have risen noticeably in recent years, and Markham homeowners are feeling it. At Edmunds, our pricing is up just over 10 percent compared to a couple of years ago, driven mainly by rising oil and transportation costs that flow through to every roofing material on the market. These increases come from manufacturers, get passed through to suppliers, and end up in your quote.
Supply chain disruptions have also made certain products harder to source. Some roofing materials require special ordering or incur higher shipping costs when local supply is tight. This isn’t a contractor padding numbers. It’s the market, and it’s been consistent across the industry.
Prices are expected to keep rising. Waiting to see if they come down is generally not a good strategy, especially if your current roof is already showing signs of age. A deteriorating roof leads to structural damage, mold, and interior repairs that will cost far more than the replacement you’re putting off. Contractor availability in the GTA also affects the final price. Booking during the busy season means competing with everyone else in the city.
Should You Repair or Replace?
The general rule at Edmunds is that if your roof is 15 years or older, replacement usually makes more financial sense than continuing to patch it. Older roofs tend to need increasingly frequent repairs, and while isolated trouble spots on an existing roof can sometimes be fixed, widespread failure across the system usually points to a full roof replacement rather than more patchwork.
A more specific way to think about it: if the repairs needed add up to more than 25 percent of the replacement value of the roof, it’s probably more cost effective in the long run to replace. Typical repair work, like fixing a few shingles or addressing a minor leak, runs around $300 covering both materials and labour. But if there’s a significant underlying issue driving the problem, costs can run into the thousands quickly, which is why having a trusted roofing repair team in Markham assess the situation matters.
At Edmunds, we provide a free quote whenever repairs would exceed that $300 minimum. If it’s going to cost more than that, you deserve to know the full picture before deciding whether to repair or replace.
How to Choose a Roofing Contractor in Markham
A good roofing contractor is licensed, carries WSIB and liability insurance, pulls required permits, provides a written itemized quote that separates materials, labour, contractor overhead, permits when required, and disposal-related charges such as dumpster rental, and stands behind their work with a warranty on both materials and labour. That’s the baseline. Anything less is a risk you’re taking on yourself.
In Ontario, WSIB clearance is not optional. If a roofing crew isn’t covered and someone gets hurt on your property, you could be held liable for that injury. Always ask for proof of WSIB clearance before signing anything.
Warning signs of a contractor to avoid: cash-only pricing, no mention of code requirements, no written quote, pressure to decide on the spot, and no local references. These aren’t just red flags for quality. They’re signs that something is being hidden. Transparency on these items also helps you compare the overall cost from one contractor to another.
Getting multiple quotes from roofing companies is smart. It helps you understand fair market pricing and makes it easier to spot outliers on both ends. A quote that comes in significantly lower than the others usually means something is being left out, and working with a well-established company like Edmunds Home Improvements for siding and roofing in Markham can help you compare those details confidently.
Questions to Ask Before You Hire
Are you licensed to work in Ontario?
Do you carry WSIB clearance for your entire crew?
Do you carry general liability insurance?
Is a building permit required for this job, and will you handle it?
Can you provide references from recent jobs in Markham or York Region?
What does your warranty cover, and for how long?
Will you provide a written, itemized quote before any work begins, breaking out labor, materials, disposal, permits if required, and contractor overhead?
Is a New Roof Worth the Cost?
A new roof is a significant investment, but consider what it’s protecting. On simpler jobs, a new roof installation often ranges from about $5,000 to $15,000, though material choice and project complexity can push costs much higher. In Markham’s housing market, a properly installed roof adds real curb appeal and resale value. Buyers notice roofing condition. A roof near the end of its life becomes a negotiating point against you. A new one is a selling point.
There’s also the energy efficiency side. A complete roof replacement is the right time to improve your attic ventilation, which lowers heating and cooling costs year-round and directly prevents the ice dam problems that cause interior damage in Markham winters.
The cycle of patch and repair eventually costs more than doing the job properly once. A metal roof that lasts 50 years will outlast two or three rounds of asphalt shingle replacements. Over the long term, the higher-cost material is often the more cost effective choice, especially if you plan to stay in your home long enough to benefit from premium materials and the longer roof’s lifespan, or if you’re dealing with weather-related issues like hail damage roof repair in Markham.
What Markham Homeowners Should Know Before Getting a Quote
Your material choice drives the biggest range in price. Labour is the single largest cost on any roofing project. Tear-off and hidden structural issues add real dollars to the final number. And market conditions in 2026 mean prices are moving in one direction.
A properly installed new roof is one of the best long-term investments a Markham homeowner can make. It protects everything inside the house, improves energy efficiency, and ends the constant cycle of leaks and patch jobs. The key is getting the job done right, by the right contractor, with the right materials for your home and our climate.
Ready to Talk About Your Roof? Contact Edmunds Home Improvements
I’ve been helping Markham and GTA homeowners with roofing and home renovations for over 30 years. The team at Edmunds Home Improvements knows this area, knows the weather, and knows what a proper installation looks like. If your roof is giving you trouble, or you just want to understand what a replacement might actually cost before you commit to anything, we’re happy to talk.
No pressure, no runaround. Just an honest conversation from people who do this work every day.
Get in touch to book your free estimate.
Steve Gibson
President & CEO, Edmunds Home Improvements
Steve Gibson has over 35 years of hands-on experience in home renovation across
Markham and the Greater Toronto Area. As President and CEO of Edmunds Home
Improvements — a company serving the community since 1947 — Steve specializes in
roofing installation and repair, siding, window replacement and installation, and
door installation. A longtime local resident, he took ownership of Edmunds in 1989
and has built the company into one of the GTA’s most trusted exterior renovation
contractors. Edmunds is fully insured (WSIB and $5 million public liability) and
is a BBB Accredited Business and ENERGY STAR partner.
