How much does a roof replacement cost in Mississauga?

A standard asphalt shingle re-roof on a typical detached house usually falls somewhere between $8,000 and $16,000, depending on square footage, roof pitch, number of layers being removed, and whether decking needs to be replaced. Flat roofs and cedar shake jobs run higher because of material and labour costs.

How often does a roof need to be replaced?

Asphalt shingle roofs typically last 20 to 25 years in this climate, sometimes less if ventilation is poor or ice damming has been a repeated problem. Flat roofs on additions or garages often need attention sooner, in the 15 to 20 year range.

What should I expect during a re-roof?

Expect a tear-off crew on site for one to two days for an average house, tarps over landscaping and driveways, a magnetic nail sweep afterward, and disposal of old shingles in a dedicated bin. A reputable contractor will also inspect the decking underneath and flag any rot before covering it up.

How can I tell if a roofing job was done well?

Look for straight, even shingle lines with no visible nail heads, properly sealed flashing around chimneys and vents, ice-and-water shield extending far enough up from the eaves, and a final walkthrough where the contractor points out what was done and hands over warranty paperwork.

Residential Roofing in Mississauga

What residential roofing covers

This category includes full re-roofs, shingle repairs, flashing and eavestrough work, flat roof installs on additions or garages, and emergency patch jobs after wind or hail damage. In Mississauga, most single-family homes are still on asphalt shingles, but you'll also find cedar shake replacements on older homes and modified bitumen or TPO on flat sections. Winters here mean ice damming is a recurring issue, so a lot of the calls in this category are about ventilation, insulation at the attic level, and ice-and-water shield installation along eaves, not just replacing worn shingles.

What to check before you hire

Proof of WSIB coverage and liability insurance, since roofing has a high injury rate and you don't want the liability landing on you
Manufacturer certification (GAF, IKO, or similar) if you want the extended workmanship warranty, not just the standard material warranty
A written scope that specifies underlayment, ice-and-water shield coverage, and whether old shingles get fully torn off or layered
A permit pulled through the City of Mississauga for structural changes, not just a straightforward tear-off and reshingle

How we score the 94 contractors listed here

We rank the businesses in this category on our best roofing contractors in Mississauga guide, weighing review volume and rating consistency alongside how a company handles complaints and follow-up work. The full breakdown of how we weigh each factor is on our methodology page.

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All residential roofing in Mississauga, ranked by score and relevance

94 businesses, scored on recent reviews. The order weighs each business's overall score by how much of its reviewed work is residential roofing, so a lower-scored specialist can rank above a higher-scored generalist.

Olympia Roofing INC

5.0(439)✓ Google-verified

Across dozens of recent jobs, customers consistently praise Fabio and his crew for arriving on time, diagnosing roof problems accurately, and finishing work to high standards. Storm damage, full replacements, and routine repairs all draw praise for professionalism, cleanliness, and pricing fairness. One caller noted that Fabio showed up when others "kept pushing around"-availability in a crisis appears central to the reputation. Reviewers highlight specific details: competitive quotes, courteous communication, 10-year warranties offered, same-day damage assessments, completion within hours, and spotless cleanup. The crew handles shingle replacement, venting, leak repair, and attic work. Several mention neighbours noticing the quality of newly installed roofs. No negative feedback surfaces in the recent sample.

Residential RoofingRoof Replacement & InstallationRoof Repair

Residential Roofing in Mississauga

What residential roofing covers

What to check before you hire

How we score the 94 contractors listed here

All residential roofing in Mississauga, ranked by score and relevance

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Common questions about residential roofing