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Roofing · Ottawa, ONLast reviewed October 2026

10 Best Roofing Companies in Ottawa, ON (2026)

TenBestFind ranks 10 roofing companies in Ottawa, ON, listed in Google's order among the companies that passed our checks. A company needed a 4.5 rating or higher, at least 50 Google reviews, a working website and a real Ottawa address. Marcus Reed last reviewed the list on October 20, 2026.

The best roofing companies in Ottawa, ranked in Google's order, start with David Tulloch Roofing, Provost & Son's Roofing and Red Seal Roofing Ottawa. All ten are rated 4.5 or higher on Google with at least 79 reviews, and each has a real website and an Ottawa address. Ontario has no provincial roofing licence, so ask every company for its WSIB clearance certificate, liability insurance and a written warranty before you sign.

The Ranking

Our top 10 roofing companies in Ottawa

Ottawa roofs take a beating. Freeze and thaw cycles, ice dams along the eaves and heavy snow loads shorten the life of shingles on the older housing in Vanier, Alta Vista and the Glebe as much as on the newer builds in Kanata and Barrhaven. Flat roofs on townhouse rows and small commercial buildings add their own drainage and membrane problems. Ontario does not issue a provincial roofing licence, so the checks fall to you. Ask any roofer for a current WSIB clearance certificate, proof of liability insurance and a written contract that names the shingle line, the warranty and the cleanup plan before you pay a deposit. A clearance certificate can be confirmed on the WSIB website with the company's account number. This list leans on companies with a verifiable shop or office in the city, because that makes warranty claims much easier to chase.

Showing 10 of 10
  1. 01

    Best for a long-established roofer with a 5.0 rating

    David Tulloch Roofing

    5.0(127 Google reviews)
    Best forRepairs, small re-roofs and honest second opinions from the owner
    In business27 years
    WarrantyProduct and workmanship warranties per the website; CertainTeed 25-year and Landmark Lifetime shingles; durations of workmanship cover not stated
    EmergencyAvailable

    Why we picked them

    First in the Google results for Ottawa roofing, with a 5.0 rating from 127 reviews and a start date of 1999.

    What we like

    • Phone answered around the clock
    • CertainTeed 25-year and Landmark Lifetime shingles
    • States good standing with the WSIB

    Things to consider

    • Dated website with few project details
    • No certificate or warranty terms published

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    Key details
    Best for
    Repairs, small re-roofs and honest second opinions from the owner
    Service area
    Ottawa
    Address
    2107 Saunderson Dr
    Years in business
    27 years
    Warranty
    Product and workmanship warranties per the website; CertainTeed 25-year and Landmark Lifetime shingles; durations of workmanship cover not stated
    Emergency service
    Available
    Credentials
    BBB accredited business
  2. 02

    Best for posted prices and a 10-year labour warranty

    Provost & Son's Roofing

    4.9(107 Google reviews)
    Best forLeak repairs and replacements with prices posted up front
    In businessNot listed
    Warranty10-year labour warranty on roof replacements, per the website
    EmergencyNot listed

    Why we picked them

    Second in the Google results, rated 4.9 from 107 reviews, and one of the few Ottawa roofers to publish inspection and minimum repair prices.

    What we like

    • $150 inspection and $450 minimum repair listed, plus HST
    • 10-year labour warranty on replacements
    • BBB accredited, owner named on the site

    Things to consider

    • Only public contact is a Gmail address
    • Licence and WSIB numbers not posted

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    Key details
    Best for
    Leak repairs and replacements with prices posted up front
    Service area
    Ottawa
    Address
    2609 Fenton Rd
    Warranty
    10-year labour warranty on roof replacements, per the website
    Credentials
    BBB accredited business
  3. 03

    Best for repairs and leak calls

    Red Seal Roofing Ottawa Ltd.

    5.0(79 Google reviews)
    Best forLeak repairs, loose shingles, gutter cleaning and ice dam removal
    In businessNot listed
    WarrantyNot listed
    EmergencyNot listed

    Why we picked them

    Third in the Google results with a 5.0 rating from 79 reviews that describe on-time visits and finished repairs.

    What we like

    • More than 15 years of experience stated
    • Owner named in reviews
    • Open every day per Google

    Things to consider

    • Thin website with a stock hero image
    • Red Seal certification stated without a number

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    Key details
    Best for
    Leak repairs, loose shingles, gutter cleaning and ice dam removal
    Service area
    Ottawa
    Address
    11 Kempster Ave
  4. 04

    Best for homeowners and property managers wanting a certified veteran

    Godfrey Roofing Inc.

    4.8(200 Google reviews)
    Best forHomeowners and property managers wanting a long-established, manufacturer-certified roofer
    In business42 years
    WarrantyManufacturer-backed warranties through its GAF, Soprema and IKO certifications; specific terms are not published on the website
    EmergencyAvailable

    Why we picked them

    Rated 4.8 from 200 reviews, in business since 1984 and GAF Master Elite certified.

    What we like

    • GAF Master Elite credential
    • $5M liability coverage stated
    • Financing up to 15 years

    Things to consider

    • No owners, prices or warranty terms published

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    • Metal roofing
    • Flat roofing
    Key details
    Best for
    Homeowners and property managers wanting a long-established, manufacturer-certified roofer
    Service area
    Ottawa
    Address
    4542 Southclark Pl, Gloucester, ON
    Years in business
    42 years
    Warranty
    Manufacturer-backed warranties through its GAF, Soprema and IKO certifications; specific terms are not published on the website
    Emergency service
    Available
    Financing
    Available
    Credentials
    GAF Master Elite
  5. 05

    Best for flat roofs and small commercial buildings

    Wolfenburg Roofing

    4.9(285 Google reviews)
    Best forFlat roofs, small commercial buildings and landlords
    In businessNot listed
    WarrantyNot listed
    EmergencyAvailable

    Why we picked them

    Has separate pages on modified bitumen, EPDM and TPO, and answers the phone until 9pm on weekdays.

    What we like

    • Flat roof systems explained on their own pages
    • Open until 9pm weekdays
    • Financing from 0 percent and free quotes

    Things to consider

    • Manufacturer certifications and warranty not named

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    • Metal roofing
    • Flat roofing
    • Storm damage repair
    Key details
    Best for
    Flat roofs, small commercial buildings and landlords
    Service area
    Ottawa
    Address
    81 Montréal Rd, Ottawa, ON
    Emergency service
    Available
    Financing
    Available
    Credentials
    Insured, certified and bonded (as stated by the company)
  6. 06

    Best for a long-running family roofer with CertainTeed credentials

    Roofmaster Ottawa Inc.

    4.7(332 Google reviews)
    Best forOttawa homeowners wanting a long-established, CertainTeed-certified roofer
    In business45 years
    WarrantyWritten workmanship warranty and materials warranty on every installation; extended manufacturer warranties available through CertainTeed Select ShingleMaster status.
    EmergencyNot listed

    Why we picked them

    Rated 4.7 from 330 reviews and operating since 1981.

    What we like

    • CertainTeed credentials
    • Decades in the same market
    • Large review base

    Things to consider

    • No hours published online
    • Crews will not remove or refit solar panels

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    • Metal roofing
    • Flat roofing
    • Storm damage repair
    Key details
    Best for
    Ottawa homeowners wanting a long-established, CertainTeed-certified roofer
    Service area
    Ottawa
    Address
    163 MacFarlane Rd, Nepean, ON
    Years in business
    45 years
    Warranty
    Written workmanship warranty and materials warranty on every installation; extended manufacturer warranties available through CertainTeed Select ShingleMaster status.
    Financing
    Available
    Credentials
    CertainTeed Select ShingleMaster
  7. 07

    Best for brand choice, skylights and financing

    Rainbow Roofing & Renovations

    4.8(377 Google reviews)
    Best forShingle replacements, skylights and eavestroughs in Ottawa's west end
    In businessNot listed
    WarrantyWarranties of up to 50 years tied to certified installer status, per the website
    EmergencyNot listed

    Why we picked them

    Rated 4.8 from 377 reviews, with four shingle brands, Velux skylights and financing.

    What we like

    • Owens Corning, CertainTeed, GAF and IKO options
    • Open 7am to 7pm every day
    • Financing and free estimates

    Things to consider

    • Workmanship warranty terms not published
    • Also does renovation work, so confirm a dedicated roofing crew

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    Key details
    Best for
    Shingle replacements, skylights and eavestroughs in Ottawa's west end
    Service area
    Ottawa
    Address
    6206 Perth St
    Warranty
    Warranties of up to 50 years tied to certified installer status, per the website
    Financing
    Available
    Credentials
    Velux factory trained installer
  8. 08

    Best for a GAF Golden Pledge shingle roof

    Firon Roofing

    4.7(233 Google reviews)
    Best forOttawa homeowners wanting a GAF Golden Pledge shingle roof
    In business18 years
    WarrantyGAF Golden Pledge Limited Warranty covering materials and labour for up to 50 years, plus 25 years on workmanship, per the company website.
    EmergencyAvailable

    Why we picked them

    Rated 4.7 from 230 reviews and offers warranties of up to 50 years.

    What we like

    • GAF Golden Pledge warranty option
    • Long manufacturer warranties

    Things to consider

    • Office declines labour-only jobs

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    • Storm damage repair
    Key details
    Best for
    Ottawa homeowners wanting a GAF Golden Pledge shingle roof
    Service area
    Ottawa
    Address
    5591 Doncaster Rd
    Years in business
    18 years
    Warranty
    GAF Golden Pledge Limited Warranty covering materials and labour for up to 50 years, plus 25 years on workmanship, per the company website.
    Emergency service
    Available
    Financing
    Available
    Credentials
    GAF Master Elite Contractor
  9. 09

    Best for flat and shingle roofs from a 130-year-old family firm

    Sanderson Roofing

    4.5(184 Google reviews)
    Best forFlat and shingle roofs across Ottawa
    In business131 years
    WarrantyNot listed
    EmergencyNot listed

    Why we picked them

    Rated 4.5 from 182 reviews and operating since 1895 with a BBB A+ rating.

    What we like

    • Operating since 1895
    • BBB A+ rating
    • Flat and shingle expertise

    Things to consider

    • Closed weekends
    • No emergency service, financing or written warranty terms published

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    • Flat roofing
    Key details
    Best for
    Flat and shingle roofs across Ottawa
    Service area
    Ottawa
    Address
    5350 Canotek Rd #7, Ottawa, ON
    Years in business
    131 years
    Credentials
    Better Business Bureau Accredited Business, A+ rating, charter member
  10. 10

    Best for shingle and flat replacements with long warranties

    Stewart Roofing Ltd.

    4.8(116 Google reviews)
    Best forShingle and flat roof replacements with long manufacturer warranties
    In businessNot listed
    WarrantyWorkmanship warranties plus manufacturer warranties on shingle and flat roofs, with transferable, non-prorated coverage for up to 50 years, per the company website.
    EmergencyNot listed

    Why we picked them

    Rated 4.8 from 116 reviews with Owens Corning Preferred and CertainTeed ShingleMaster 5 Star credentials.

    What we like

    • Two manufacturer certifications
    • Long warranties on replacements

    Things to consider

    • No hours, founding year or licence published on the site

    Services

    • Roof repair
    • Roof replacement
    • Roof inspection
    • Metal roofing
    • Flat roofing
    Key details
    Best for
    Shingle and flat roof replacements with long manufacturer warranties
    Service area
    Ottawa
    Address
    15 Grenfell Crescent, Nepean, ON
    Warranty
    Workmanship warranties plus manufacturer warranties on shingle and flat roofs, with transferable, non-prorated coverage for up to 50 years, per the company website.
    Credentials
    Owens Corning Preferred Contractor

Side by Side

Compare the top roofing companies in Ottawa

Ranking position reflects our editorial review, not customer ratings.

Editorial comparison of the 10 ranked companies. Customer ratings, where shown, come from the source named on each company profile.
RankCompanyBest forKey servicesService areaGoogle ratingEmergencyProfile
01David Tulloch RoofingRepairs, small re-roofs and honest second opinions from the ownerRoof repair, Roof replacement, Roof inspectionOttawa5.0(127)YesView
02Provost & Son's RoofingLeak repairs and replacements with prices posted up frontRoof repair, Roof replacement, Roof inspectionOttawa4.9(107)Not listedView
03Red Seal Roofing Ottawa Ltd.Leak repairs, loose shingles, gutter cleaning and ice dam removalRoof repair, Roof replacement, Roof inspectionOttawa5.0(79)Not listedView
04Godfrey Roofing Inc.Homeowners and property managers wanting a long-established, manufacturer-certified rooferRoof repair, Roof replacement, Roof inspectionOttawa4.8(200)YesView
05Wolfenburg RoofingFlat roofs, small commercial buildings and landlordsRoof repair, Roof replacement, Roof inspectionOttawa4.9(285)YesView
06Roofmaster Ottawa Inc.Ottawa homeowners wanting a long-established, CertainTeed-certified rooferRoof repair, Roof replacement, Roof inspectionOttawa4.7(332)Not listedView
07Rainbow Roofing & RenovationsShingle replacements, skylights and eavestroughs in Ottawa's west endRoof repair, Roof replacement, Roof inspectionOttawa4.8(377)Not listedView
08Firon RoofingOttawa homeowners wanting a GAF Golden Pledge shingle roofRoof repair, Roof replacement, Roof inspectionOttawa4.7(233)YesView
09Sanderson RoofingFlat and shingle roofs across OttawaRoof repair, Roof replacement, Roof inspectionOttawa4.5(184)Not listedView
10Stewart Roofing Ltd.Shingle and flat roof replacements with long manufacturer warrantiesRoof repair, Roof replacement, Roof inspectionOttawa4.8(116)Not listedView

Coverage

Roofing companies serving Ottawa and nearby areas

Most companies in this ranking work across Ontario and the surrounding suburbs. Coverage and travel fees vary, so confirm your address is inside the service area before scheduling.

  • Ottawa

Nearby rankings

Service coverage across Ottawa. Individual company areas are listed on each profile.

Methodology

How we chose the best roofing companies in Ottawa

We followed Google's order for roofing in Ottawa as read on October 20, 2026. A company needed a 4.5 rating or higher, at least 50 Google reviews, a working website and a real Ottawa address. We skipped virtual offices, home-address listings, lead-generation sites and companies whose website did not match their Google listing. Companies in Nepean, Gloucester, Kanata and Orléans count as Ottawa. Reviews were read for patterns, not quoted for claims we could not check. No company paid for a place.

Read our full ranking methodology
Evaluated10
Ranked10

Hiring

How to choose a roofing company in Ottawa

  1. Verify insurance and credentials

    Ask for a current certificate of insurance and confirm registration or licensing with the authority that issues it, not with the company.

  2. Ask for a written estimate

    Scope, materials, removal, disposal and who pulls the permit should all be named on the page rather than agreed on the doorstep.

  3. Compare multiple quotes

    Two or three bids on the same scope. A number far below the others usually means something has been left out of it.

  4. Understand the warranty

    Separate the manufacturer's warranty on materials from the company's own warranty on the work, and get both in writing.

  5. Ask who performs the work

    Find out whether the crew are employees or subcontractors, and who supervises them on the day.

  6. Check recent local projects

    Ask for addresses or photographs of comparable jobs finished nearby in the last year or two.

  7. Avoid high-pressure sales

    A discount that expires today, or a knock on the door after a storm, is a reason to slow down rather than sign.

  8. Get everything in writing

    Change orders, timeline and payment schedule included, before the first payment changes hands.

Questions to ask before hiring

0 of 10 asked

Red flags

  • No verifiable local business address or registration
  • Pressure to sign on the first visit
  • A demand for full payment up front
  • An offer to cover or waive your insurance deductible
  • Refusal to put warranty terms in writing
  • A quote that will not itemize scope

Keep Going

Related home services in Ottawa

Roofing guides for Ottawa homeowners

FAQ

Roofing companies in Ottawa FAQs

Do roofers in Ottawa need a licence?

No, Ontario does not issue a provincial roofing licence. Instead, ask the roofer for a current WSIB clearance certificate, proof of liability insurance and a written contract, and confirm the clearance certificate on the WSIB website before you pay a deposit.

How much does a roof replacement cost in Ottawa?

Most quotes depend on roof size, pitch, tear-off layers and the shingle line, so get at least three written estimates for the same scope. One company on this list publishes a typical range of $5,000 to $10,000 for a shingle replacement, but a larger or more complex roof will cost more. Ask each roofer what is included for decking repair, ventilation and cleanup.

What causes ice dams on Ottawa roofs?

Ice dams form when heat escaping from the attic melts snow on the roof and the water refreezes at the cold eaves. Better attic insulation and ventilation fix the cause, while an ice and water membrane along the eaves limits the damage. Several companies on this list also offer winter ice and snow removal.

Editorial Record

About this ranking

Originally published
October 2026
Last reviewed
October 2026
Reviewed by
Marcus Reed, Expert reviewer, exteriors and structure
Companies evaluated
10

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