This guide compares 20 roofers serving Ottawa. The featured shortlist includes Markelangelo's Roofing (4.9 stars from 158 Google reviews), Wolfenburg Roofing (4.9 stars from 280 Google reviews), and Roofs of Steel (4.9 stars from 123 Google reviews).
Listings claimed by their owner appear first; all other positions follow the published rating methodology. 20 carry a sourced public rating, averaging 4.8 stars; the highest-rated is Country Home Exteriors at 5.0 stars from 109 Google reviews.
Ottawa roofs take a beating: ice dams in January, freeze-thaw cycles that lift shingles, and summer heat that bakes them. The best roofers here install shingle, flat, and metal systems with proper ventilation and ice-and-water shield along the eaves, and they back the work with a real written warranty.
The companies below handle full replacements, repairs, and flat-roof work for homes across the city, and most offer free inspections. Each is a currently-operating Ottawa business with public reviews, so you can confirm licensing, insurance, and warranty terms before you hire.
Featured professionals
A focused Ottawa shortlist. Listings claimed by their owner appear first; all other positions follow our published rating methodology.
Listings claimed by their owner appear first. All other positions follow the selected sort.
FeaturedKanata +7
4.9(280)on GoogleChecked Aug 2026RoofersOttawa roofing company focused on flat and low-slope systems (EPDM, TPO, modified bitumen) alongside shingle roofing, repairs and waterproofing. Serves Ottawa, Vanier and Gatineau.
View Wolfenburg Roofing
FeaturedOrléans
4.9(158)on GoogleChecked Aug 2026RoofersOttawa-area roofing contractor based in Cumberland with over 20 years of experience, doing re-roofing, attic insulation, gutters, downspouts and ventilation improvements. BBB-accredited and a Certified Green Roofer.
View Markelangelo's Roofing
FeaturedKanata +8
4.9(123)on GoogleChecked Aug 2026RoofersOttawa-area metal roofing specialist based in Richmond, installing steel shingle and standing-seam roofs made from Ontario steel for residential homes. Does not do commercial roofing.
View Roofs of SteelMore roofers
Barrhaven +3
5.0(109)on GoogleChecked Aug 2026EavestroughsCountry Home Exteriors is a siding contractor in Ottawa offering roofing. Rated 5 from 109 Google reviews.
View Country Home Exteriors
FineLines Roofing & Renovations Ltd is a roofing contractor in Ottawa. Rated 5 from 88 Google reviews.
View FineLines Roofing & Renovations Ltd
Eco Ottawa Windows and Doors is a window installation service in Ottawa offering doors, roofing and windows. Rated 4.9 from 138 Google reviews.
View Eco Ottawa Windows and Doors
Provost & Son's Roofing is a roofing contractor in Ottawa. Rated 4.9 from 103 Google reviews.
View Provost & Son's Roofing
Stittsville
4.8(376)on GoogleChecked Aug 2026RoofersFamily-run Ottawa roofing and exterior renovations company based in Stittsville, established in 1987. Handles residential re-roofing and repairs across the Ottawa area.
View Rainbow Roofing & Renovations
Kanata +7
4.8(271)on GoogleChecked Aug 2026RoofersResidential roofing company serving Ottawa, specializing in asphalt, metal and tile shingle roofs as well as flat roofing, eavestrough and exterior work. Holds Owens Corning Preferred Contractor and CertainTeed Select ShingleMaster credentials.
View Vanity Roofing
Barrhaven +7
4.8(258)on GoogleChecked Aug 2026RoofersRemember Me Roofing is a roofing contractor in Ottawa offering roofing supplies. Rated 4.8 from 258 Google reviews.
View Remember Me Roofing
Gloucester
4.8(198)on GoogleChecked Aug 2026RoofersSecond-generation family roofing contractor operating in Ottawa since 1984, based in Gloucester. Does residential and commercial roofing, inspections, gutters and leak repair, and is a GAF Master Elite contractor.
View Godfrey Roofing Inc.
Barrhaven +8
5.0(40)on GoogleChecked Sep 2026RoofersRoof Revival and Metal Roofing Inc. is a family-owned Orléans roofing company offering roof inspections, repairs, asphalt shingle replacement, metal roofing systems and a roof rejuvenation treatment intended to extend the life of an existing roof.
View Roof Revival and Metal Roofing Inc.
Jorgensen Roofing is a roofing contractor in Carp, Ottawa. Rated 4.8 from 85 Google reviews.
View Jorgensen Roofing
Barrhaven +7
4.8(81)on GoogleChecked Aug 2026RoofersCentury Roofing and Siding Ltd. is a roofing contractor in Richmond, Ottawa offering gutter cleaning and siding. Rated 4.8 from 81 Google reviews.
View Century Roofing and Siding Ltd.
Nepean
4.7(327)on GoogleChecked Aug 2026RoofersLong-established Ottawa roofing contractor handling asphalt shingle, cedar shake, metal and flat roof systems, plus skylights, siding and winter snow/ice removal. Based in Nepean and serving the wider Ottawa region.
View Roofmaster Ottawa Inc.
Kanata +7
4.7(221)on GoogleChecked Aug 2026RoofersOttawa residential roofing contractor providing roof replacement and repair services, GAF certified. Based on Doncaster Road in Ottawa.
View Firon Roofing Inc.
Gloucester +2
4.6(99)on GoogleChecked Aug 2026RoofersLondon Eco Metal - Ottawa Metal Roofing Division is a roofing contractor in Ottawa. Rated 4.6 from 99 Google reviews.
View London Eco Metal - Ottawa Metal Roofing Division
Kanata +7
4.5(177)on GoogleChecked Aug 2026RoofersOttawa roofing contractor (operating as J.D. Sanderson Inc.) providing residential roof replacement and repair across the city. Located on Catherine Street in central Ottawa.
View Sanderson Roofing
Kanata +7
4.4(163)on GoogleChecked Aug 2026RoofersOttawa roofing and siding contractor offering roof replacement, repairs, siding and eavestrough for homeowners. Carries a GAF certification and an A+ BBB rating.
View Rydel Roofing & Siding
Kanata +3
4.4(224)on GoogleChecked Aug 2026EavestroughsModern Eavestroughing Ottawa is a construction in Ottawa offering gutter cleaning, eavestrough service and siding. Rated 4.4 from 223 Google reviews.
View Modern Eavestroughing OttawaOttawa winters and roofs
The ice ridge at the eaves in February is the most common reason an Ottawa homeowner calls a roofer, and new shingles are rarely the answer to it. Natural Resources Canada traces it to heat escaping into the attic, which puts the fix above the ceiling rather than on top of the roof.
Ice damming usually occurs when there is a significant amount of snow on the roof. Heat escaping from the house melts snow against the sheathing, the water runs down to the overhang, and if the air and the overhang are below freezing the water freezes there and starts the dam. Everything that melts afterwards backs up behind it.
Natural Resources Canada's conclusion follows from that mechanism: the best prevention for ice damming is to seal all attic air leaks and insulate thoroughly. A well sealed and insulated attic gives a cool roof, and a cool roof generally does not develop ice dams.
Many attics, including those under low-sloped roofs, have little room for insulation where the attic floor meets the eaves. Once a baffle is in place to keep a ventilation gap between the insulation and the roof sheathing, only about 100 mm may be left. That thin edge is exactly where snow melts and the dam forms, so the guidance is to put the best insulation possible at that edge.
Ventilation is the second line of defence, not the first. Existing vents have to be working and not blocked by insulation or debris, and the space between the top of the insulation and the underside of the sheathing has to stay open. Sealing air leaks comes before adding vents, because venting a leaky attic moves warm moist house air through it faster.
Replacing a roof covering is not usually what triggers a City permit. Structural work is: the City's threshold is an installation, erection, extension, or material alteration or repair, and altering a structure of more than 10 square metres. Changing rafters, adding a dormer or altering the roof line sits inside that.
Where a permit is required, the City states the owner and the builder are responsible for the process and equally liable under the Ontario Building Code Act. The permit is posted visibly for the duration of the work, and construction has to seriously commence within six months of issue or the permit can be revoked.
Buyer guide
What separates a great roofer from a cheap quote, and the questions worth asking before you sign.
Ottawa's winters make ice dams a real risk. A proper reroof includes ice-and-water membrane along the eaves and in the valleys, not just felt. Ask the roofer to point it out on the quote.
Poor attic ventilation cooks shingles from below and worsens ice dams. A good Ottawa roofer inspects intake and exhaust venting and includes any fixes in the plan.
Separate the manufacturer's shingle warranty from the roofer's workmanship warranty. The workmanship warranty is the one that covers install errors; confirm its length in writing.
Roofing is high-risk work. Make sure the company carries liability insurance and WSIB coverage so you are not exposed if someone is hurt on your property.
April to October
Asphalt shingles seal to each other with an adhesive strip that relies on warmth, and roof work needs a surface that is neither frozen nor slick. Ottawa averages 6.2 °C in April, 21.3 °C in July, and 2.0 °C in November. Emergency repairs happen whenever they must; planned replacement sits inside the warm half of the year for reasons of adhesion rather than comfort.
Temperatures are the Environment and Climate Change Canada: Canadian Climate Normals for station OTTAWA CDA, 1991-2020. Checked 2026-09-10. Any single year can run warmer or colder than the normals.
Before you hire
Consumer Protection Ontario publishes guidance written specifically for hiring a roofer, including what belongs in a written contract and what your rights are when the work is not done as promised. Ottawa Service Directory is a listings site, not a regulator: we publish what a business reports about itself, so confirm what applies to your job with the source below and with the business before work starts.
Source: Consumer Protection Ontario: hiring a roofer. Checked 2026-08-24. Rules and thresholds change, so confirm before work starts.
Common questions
For homeowners
Tell us about the job and someone on our team finds you a suitable Ottawa roofer.