Most Ajax homeowners spend between $9,200 and $19,500 to replace their roof in 2026. A typical 1,500-2,000 square foot home costs $12,500-$16,200 for asphalt shingles. Your final price depends on roof size, pitch, material choice, and whether structural repairs are needed during tear-off.
This guide shows you what roof replacement costs in Ajax. You’ll learn what affects the price and what surprise costs to watch out for. We’ll show you real Ajax prices based on home size. You’ll learn what makes costs go up or down. By the end, you’ll know exactly what to budget and what questions to ask roofers. You won’t have to worry about getting ripped off or surprised by hidden fees.
How much does a complete roof replacement cost in Ajax, Ontario?
Based on our 35+ years fixing roofs in Ajax and Durham Region, most families spend between $9,200 and $19,500 to replace their roof. Here’s how it breaks down by home size:
| Home Size (square feet) | Roof Size | What Ajax Families Pay |
| 1,000–1,500 sq ft | 12–17 squares | $9,200–$12,500 |
| 1,500–2,000 sq ft | 17–22 squares | $12,500–$16,200 |
| 2,000–2,500 sq ft | 22–28 squares | $16,200–$19,500 |
Want to know your exact price? → Get a free roof replacement estimate or call us at 416-417-5656.
Ajax Roof Replacement Costs by Home Size (2026)
To understand roof costs, you need to know your roof’s real size. Your roof is usually bigger than your home’s floor size because of the edges that hang over and how steep it is. Roofers measure roofs in “squares.” One square equals 100 square feet of roof.
Here’s what Ajax homeowners usually pay based on home and roof size:
| Home Size | Roof Size | Asphalt Shingle Price | Metal Roof Price |
| 1,000–1,500 sq ft | 12–17 squares | $9,200–$12,500 | $14,000–$19,500 |
| 1,500–2,000 sq ft | 17–22 squares | $12,500–$16,200 | $18,500–$26,000 |
| 2,000–2,500 sq ft | 22–28 squares | $16,200–$19,500 | $25,000–$31,500 |
| 2,500+ sq ft | 28–35+ squares | $19,500–$27,000+ | $30,000–$43,000+ |
What is a roofing square? One roofing square covers 100 square feet of roof. A typical 2,000-square-foot Ajax home usually has about 1,800–2,200 square feet of roof (18–22 squares). This depends on how complicated your roof is and how steep it is.
In our Ajax jobs, we’ve found that most houses in neighborhoods like Westney Heights and Pickering Village have roofs between 18–22 squares. Single-story homes with simple roofs are usually smaller. Two-story homes with lots of peaks and extra features are usually bigger.
Metal roofs cost way more at first but last much longer. This makes them worth thinking about if you plan to live in your home for many years.
What Makes Roof Replacement Costs Go Up or Down in Ajax?
Now that you have basic prices, let’s look at what pushes your project to the high or low end of those ranges.
How Steep Your Roof Is
How steep your roof is really matters for labor costs. Flat or gentle roofs (under 4/12 angle) are easier and safer to work on. This keeps costs down. Steep roofs (over 8/12 angle) need special safety gear, scaffolding, and take longer to install. This makes labor cost more.
For example, an easy-to-walk-on roof on a 2,000-square-foot Ajax home might cost $14,000. The same home with a really steep roof could cost $16,800–$17,300 because of the extra safety work and time needed.
How Complicated Your Roof Is
Simple roofs with few features cost less to replace than tricky roofs. Each dormer (little room sticking out from the roof), valley (where two roof parts meet), skylight, or roof section adds:
- Wasted materials (more cuts and custom fitting needed)
- Extra work time (detailed work around these features)
- More flashing (metal protection where roof parts connect)
A basic rectangular ranch-style home might cost less. A house with lots of dormers and connecting roof parts could add several thousand dollars.
What Material You Pick
Your roofing material is the biggest thing that changes your cost. Here’s how common choices compare for Ajax homes:
| Material | What It Costs | How Long It Lasts | Best For |
| 3-Tab Asphalt | $9,200–$11,900 | 15–20 years | When you need to save money |
| Architectural Shingles | $11,900–$16,200 | 20–25 years | Most Ajax homes (best value) |
| Metal Roofing | $17,300–$26,000 | 40+ years | Long-term investment |
| Cedar Shake | $19,500–$30,000 | 30–40 years | Old-style homes, fancy look |
Most Ajax homeowners pick architectural asphalt shingles. They’re tough, look good, and don’t cost too much. We suggest architectural over 3-tab shingles. Spending a bit more gets you many more years and much better protection from wind. This matters during Durham Region’s winter storms.
How Many Old Roof Layers You’re Removing
Taking off one layer of old shingles is included in most Ajax roof quotes. But if your roof has two or more layers (common in older homes where people just put new shingles over old ones), you’ll pay extra for the additional work and trash removal.
Ajax building rules now say you must take everything off down to the wood deck. You can’t just cover over old layers. This is actually better for your roof and lets us check for and fix any damaged wood.
Roof Deck Repairs
You won’t know if the wood under your shingles (called the roof deck) is damaged until the old roof comes off. Water-damaged or rotten wood needs to be replaced before the new roof goes on.
In our Ajax jobs, we often find deck repairs in homes over 25 years old—especially those that had leaks for a while. Most homes need just a few wood sheets replaced. Homes with lots of long-term water damage may need more work.
What’s Included in Your Ajax Roof Replacement Price?
Understanding what you’re paying for helps you spot fair prices and notice warning signs in contractor quotes. Here’s how costs usually break down in a professional Ajax roof replacement estimate:
Materials (40–50% of Total Cost)
Your material costs include more than just shingles:
- Shingles (main roof covering)
- Underlayment (waterproof barrier under shingles)
- Starter strips (first row of shingles along edges)
- Ridge cap shingles (top of roof peaks)
- Ice and water shield (extra protection around edges, valleys, and holes in roof)
- Drip edge (metal edge along roof sides)
- Flashing (metal protection around chimneys, vents, walls)
We always use high-quality synthetic (plastic-type) underlayment in our Ajax projects instead of old-fashioned felt paper. This upgrade lasts way longer and most big shingle makers now require it to keep their warranties good.
Labor (40–45% of Total Cost)
Professional installation includes:
- Tear-off crew (taking off old shingles and hauling away trash)
- Installation crew (putting on new roof)
- Site protection (tarps, magnets to pick up nails, cleanup)
- Safety gear and rules
Our Ajax installation prices are fair for Durham Region while showing the quality work and full insurance coverage professional roofers provide.
Trash Removal (5–8% of Total Cost)
Taking away and dumping old roofing materials requires:
- Bin rental (for how long the job takes)
- Dump fees (charged by weight)
- Waste disposal permits (if the town requires them)
A typical Ajax roof replacement creates lots of trash from old shingles and underlayment that must be properly thrown away.
Extras and Upgrades
Common add-ons that make your roof work better include:
- Better attic ventilation: Ridge vents, soffit vents, or extra roof vents
- New chimney flashing: Custom metal work around chimney base
- New skylights: Replace old skylights during roof replacement
- Gutter work: Fix gutter problems while roof work is happening
We always check your attic ventilation in our Ajax estimates. Bad ventilation is a top reason shingles fail early and cancels most manufacturers’ warranties. Fixing ventilation during roof replacement costs less than adding it after the new roof is on.
Asphalt Shingle vs. Metal Roof Costs in Ajax
Material choice is the biggest thing that changes your quote. Here’s how asphalt and metal compare for Ajax homes.
Asphalt Shingle Roofing
What It Costs: $9,200–$16,200 (Ajax home)
How Long It Lasts: 20–25 years (architectural shingles)
Warranty: Maker warranties usually range from 25–50 years depending on which product you buy
Good Things:
- Costs less upfront
- Most colors and styles to pick from
- Easier and cheaper to repair
- All roofers know how to install it
- Really good protection from wind
Best for: People planning to sell within 10–15 years, those who like traditional looks, projects where upfront cost matters most.
Metal Roofing
What It Costs: $15,200–$26,000 (same Ajax home)
How Long It Lasts: 40+ years
Warranty: Long maker warranties usually available
Good Things:
- Lasts way longer than asphalt
- Better energy savings with special coatings
- Works better in Ajax winters (snow slides off easier, fewer ice dam problems)
- Almost no maintenance after it’s on
- Can make your home worth more
- Won’t catch fire
Best for: People staying in their home long-term, people who care about the environment, homes with lots of trees (handles falling branches better), people who want a modern look.
Long-Term Value Comparison
Metal roofs cost a lot more at first but last much longer than asphalt. For homeowners staying in their Ajax house a long time, metal roofing often gives you equal or better value per year of protection. It also works better during Durham Region’s harsh winters.
Over your time in the home, spending more on metal roofing at first may be balanced out by how long it lasts, how little maintenance it needs, and possible energy savings.
| What to Compare | Asphalt Shingles | Metal Roofing |
| Upfront Cost | $9,200–$16,200 | $15,200–$26,000 |
| How Long It Lasts | 20–25 years | 40+ years |
| Maintenance | Medium (check and fix sometimes) | Almost none |
| Energy Performance | Normal | Better (special coatings available) |
| Ajax Winter Performance | Good (with ice dam protection) | Really good (snow slides off naturally) |
| Resale Value | What people expect | Might make property worth more |
Not sure which material fits your budget and long-term plans? → Learn more about our roof installation options or call 416-417-5656 to talk with our Ajax team.
Hidden Costs Most Ajax Homeowners Don’t Know About
Being honest means telling you about surprise costs other roofers hide. Here are expenses that catch Ajax homeowners off-guard and how to plan for them.
1. Building Permit Fees
Ajax requires a building permit for complete roof tear-offs and replacements. Permit fees change based on your home’s size and how much work is being done. Ask your roofer if the permit cost is included in your quote or charged separately.
Most good roofers handle the permit paperwork and inspection scheduling as part of their service. Confirm this upfront to avoid last-minute problems.
2. Structural Repairs Found During Tear-Off
You won’t see structural problems until the old shingles come off. Common hidden problems include:
- Rotten fascia and soffit (boards along roof edge)
- Damaged rafters from old leaks (roof support beams)
- Sagging roof sections that need reinforcement
In our Ajax projects, we find unexpected structural repairs in many homes over 25 years old—especially those that had leaks for a while. We take photos of everything and get your approval before doing any extra work.
3. Upgraded Underlayment
Your quote might include basic felt underlayment, but upgrading to synthetic underlayment is a smart investment. Synthetic underlayment lasts way longer than traditional felt and most major shingle makers now require it to keep their warranties good.
If a roofer quotes felt underlayment, ask about upgrading to synthetic. The small extra cost now prevents having to deal with underlayment problems if you ever need shingle repairs years later.
4. When You Schedule Your Replacement
Project timing can affect your total cost:
- Off-season scheduling (November–March): May save money because demand is lower
- Peak season (June–August): Normal pricing, but longer wait times for scheduling
- Emergency repairs during busy times: Urgent work may cost more
If your roof isn’t actively leaking and you can be flexible with timing, planning your Ajax replacement for late fall or early spring may save money while still letting you finish before bad weather comes.
5. Financing Choices
Many roofers offer financing, but the convenience comes with interest costs. Before choosing contractor financing, compare other options:
- Home Equity Line of Credit (HELOC): Often has better rates
- Cash payment: Some roofers give discounts for paying all upfront
- Insurance claims: If storm damage is covered, your deductible may be your only cost
How to Plan for Roof Replacement in Ajax (What to Do Next)
Now you understand all costs (including potential surprises). You’re ready to move forward with confidence. Here’s your action plan:
Get Three Written Estimates
Ask for detailed estimates from at least three Ajax roofing contractors. The National Roofing Contractors Association says getting three or four proposals from good contractors helps you compare pricing, work plans, and quality promises.<sup>1</sup>
Look for quotes that break down:
- Materials (by type and amount)
- Labor (by step: tear-off, installation, cleanup)
- Trash removal fees
- Permits
- Warranty coverage
Avoid roofers who only give you one total price without details. You can’t tell if it’s fair without seeing what’s included.
Check Credentials and Insurance
Before hiring any roofer, confirm:
- WSIB coverage (workplace safety insurance)
- Full liability insurance
- Recent references (call at least 2–3 previous Ajax customers)
- Building code knowledge (knows Ontario Building Code)
We carry full WSIB and liability coverage and give you proof of insurance with every estimate. This is normal for professional roofers and protects both you and our crews.
Important Questions to Ask Every Roofer
Before signing a contract, ask:
- “Is tear-off included, or does that cost extra?” (Make sure tear-off to wood deck is in base price)
- “How many layers am I removing?” (Multiple layers should be listed in the quote)
- “What warranty do you give on your work?” (Understand both labor and material warranty coverage)
- “Who handles the building permit and inspections?” (Should be included in professional service)
- “What happens if you find damaged deck or structural problems?” (Get approval process and pricing approach upfront)
- “When can you start, and how long will it take?” (Set realistic expectations for scheduling and completion)
Typical Ajax Project Timeline
Here’s what to expect once you hire a roofer:
- Permit processing: Roofers usually handle this paperwork
- Material ordering: Allow time for delivery, especially for special colors or metal roofing
- Scheduling: Timeline changes by season (peak summer months have longer waits)
- Installation: Most single-family Ajax homes take 1–3 days depending on size and weather
- Inspection: Building inspector checks that work follows code after completion
We give same-day quotes for Ajax homeowners and keep schedules even during busy seasons. Our crews work only in Durham Region, so we’re not running between projects all over the GTA. Your roof gets done on schedule without delays.
Payment Options to Think About
Professional roofers usually structure payment in stages:
- Deposit when contract is signed
- Progress payment during project
- Final payment when done and you’re satisfied
Financing options to explore:
- Contractor financing (convenient but compare interest rates)
- Home Equity Line of Credit (often has better terms)
- Cash payment (ask if discount available)
- Insurance claims (if applicable—storm damage, wind damage, hail damage)
If storm damage started your replacement, contact your insurance company before getting quotes. Many homeowners’ insurance policies cover wind and hail damage. Your deductible becomes your main out-of-pocket cost.
Ready to Get Your Exact Quote for Your Ajax Home?
You now know how to judge roof replacement quotes with confidence. You understand what fair pricing looks like for Ajax homes. You can spot potential extra costs before they surprise you.
The next step is getting accurate pricing for your roof’s size, steepness, and condition. We give free, no-pressure estimates with detailed cost breakdowns. We show you exactly what you’re paying for and why.
Our family has been protecting Ajax homes for over 35 years. We’ve completed 1,700+ projects across Durham Region. We handle everything from permits to inspections. We use only top-quality materials backed by full warranties. We complete most installations in 1–3 days with minimal disruption to your family.
Get your free Ajax roof replacement estimate:
→ Call our team at 416-417-5656 (24/7 availability for emergencies)
→ Request your free roof replacement estimate online (quick response to quote requests)
Whether you’re dealing with an active leak, planning ahead for an aging roof, or checking if a quote you got is fair, we’re here to help. Let’s protect your home’s value and your family’s comfort with a roof replacement done right the first time.
Metro Roofing Inc. has served Ajax, Pickering, and the Greater Toronto Area since the 1980s. Our certified crews specialize in residential and commercial roofing with a focus on quality workmanship, clear pricing, and customer satisfaction. Contact us today for your free roof inspection and estimate.
References
- National Roofing Contractors Association. “Consumer Resources – Selecting a Contractor.” NRCA, https://www.nrca.net/roofing-guidelines/resources. Accessed 17 Jan. 2026.
