Vetted, currently-operating roofing contractors serving Cambridge and the Waterloo Region, ranked by longevity, manufacturer certifications and verified BBB standing.
A third-generation family company operating since 1956, AM Group Exteriors serves Cambridge along with Hespeler, Preston and Galt and is one of the longest-established exterior firms in the region. It is a GAF Certified Plus contractor and holds Owens Corning Platinum Preferred status, allowing enhanced lifetime manufacturer warranties. The company installs asphalt shingles and metal roofs and also handles flat roofing, windows, siding and insulation for residential, commercial and industrial properties.
Family-owned and operating since 1978, D'Angelo & Sons brings more than four decades of experience and serves Cambridge as part of a wide Southern Ontario footprint. The company works on residential, commercial and industrial buildings using trusted brands including CertainTeed, Owens Corning and GAF. Its broad scope covers roof replacement and repair, flat roofing, eavestrough, siding, masonry, ice-dam removal and roof inspections, with financing options available.
Roof ReplacementRoof RepairAsphalt ShinglesFlat RoofingEavestroughSidingMasonryIce Dam Removal
Cambridge-based Conestoga Roofing & Sheet Metal has specialized in flat and low-slope roofing since 1982 and is BBB accredited with an A+ rating. The company focuses on commercial, industrial and institutional buildings, installing and servicing BUR, PVC, TPO, EPDM and modified-bitumen systems along with sloped metal roofing. With its sheet-metal capability and decades of regional experience, it is a go-to for new flat-roof installation, replacement, inspections and maintenance across Southern Ontario.
Founded in 1999 and family-operated, Custom Contracting serves Cambridge and the Galt, Preston and Hespeler communities from a network of Southern Ontario locations. It is an Owens Corning Preferred roofing and exterior contractor offering roofing, siding, eavestroughs, windows, HVAC and attic insulation under one roof. The company reports thousands of completed projects across the region and provides free roof inspections.
Founded by John Thomson, this family-owned and operated roofer has served Cambridge, Kitchener, Waterloo and surrounding areas for more than four decades and is BBB accredited with an A+ rating. A GAF-affiliated contractor based in Cambridge, it focuses on residential shingle roofing with custom flashing and skylights, plus aluminum soffit, fascia and eavestrough, snow and ice-dam removal and insurance inspections. All employees carry Workers' Compensation coverage and Working at Heights certification.
Roof ReplacementRoof RepairAsphalt ShinglesSkylightsEavestroughSoffit & FasciaIce Dam RemovalRoof Inspections
Headquartered in Cambridge and operating since 2004, Classic Products Roofing Systems is a metal roofing specialist serving the Waterloo Region and across Southern Ontario, and is BBB accredited with an A+ rating. The company installs Classic aluminum, Armadura Canadian-made steel and standing-seam systems for both residential and commercial properties, marketing permanent, lifetime-warranty roofing solutions. Its WSIB-compliant, safety-trained installers are certified on direct-to-deck metal installation methods.
Metal RoofingAluminum RoofingSteel RoofingStanding SeamRoof ReplacementRoof Installation
House & Hammer Roofing serves Cambridge, Kitchener-Waterloo, Guelph and surrounding cities, led by an owner with more than 40 years in the local roofing trade and crew members with 15 to 20 years of experience each. The company handles roof replacement and repair, installation, skylights, chimney flashing and soffit repair, and offers 50-year shingle products with transferable warranty coverage. It was named a 2024 Best Roofing Contractor in Cambridge by ThreeBestRated.
Cambridge-based Customer's Roofing has operated since 2008 and is BBB accredited with an A+ rating dating to 2012, one of the longer accreditation records among local residential roofers. The company specializes in residential roofing and displays CertainTeed and Owens Corning manufacturer partnerships, backing installations with a 50-year product warranty and a 15-year labour warranty. Services include flat roof replacement and repair, 24-hour emergency repair, maintenance, skylights, eavestrough and siding, with WSIB coverage in place.
Founded in 2011 and based in Cambridge, Belmar Roofing handles both residential roof replacement and commercial flat roofing using EPDM, TPO and modified-bitumen systems, alongside siding, eavestrough, soffit and fascia. The company is fully licensed and bonded with general liability coverage, and runs an in-house safety team that keeps crews fall-arrest trained and job sites WSIB compliant. It is listed on the BBB but is not BBB accredited.
Roof ReplacementRoof RepairAsphalt ShinglesFlat RoofingCommercial RoofingSidingEavestroughSoffit & Fascia
Cambridge-based FS Roof Systems (formerly FlatScapes Roof Systems) is a flat-roof specialist led by owner-operator Tim Demers, who brings more than 20 years of roofing experience, and is BBB accredited with an A+ rating. The company installs, repairs and maintains commercial, residential and industrial flat-roof systems including EPDM, TPO and PVC, and offers new installation, emergency repair, evaluation and maintenance planning across the Waterloo-Wellington area.
Ontario has no provincial roofing trade licence, so the single most important credential when hiring in Cambridge is proof of WSIB (Workplace Safety and Insurance Board) coverage plus commercial liability insurance. Any reputable roofer can produce a WSIB clearance certificate on request; without one, you could be held liable if a worker is injured on your property. Local firms such as Classic Products, Belmar and Thomson Roofing state they keep crews WSIB compliant and fully insured.
Check for manufacturer certifications
Because there is no provincial licence in Ontario, manufacturer certifications are the best proxy for installer quality in Cambridge. Look for GAF Certified Plus and Owens Corning Platinum Preferred (both held by AM Group Exteriors), Owens Corning Preferred (Custom Contracting), GAF affiliation (Thomson Roofing) or brand partnerships with CertainTeed and Owens Corning (D'Angelo & Sons, Customer's Roofing). These designations also unlock extended 25-to-50-year material warranties.
Verify the City of Cambridge building permit process
In Cambridge, a building permit is generally required when a roof replacement involves structural work or replacing the roof sheathing, while a simple re-shingle over a sound existing deck often does not need one. Permits are issued through the City of Cambridge Building Division, and the Ontario Building Code governs the work. A trustworthy contractor will tell you when a permit is needed and pull it on your behalf; never let a roofer skip a required permit to save time.
Look for proven cold-climate experience
Cambridge sits in the Grand River valley and faces heavy lake-effect-influenced snow load, persistent ice damming and dozens of freeze-thaw cycles each winter. Ask whether the contractor installs ice-and-water shield membrane at the eaves and valleys (required under the Ontario Building Code in this climate zone), proper attic ventilation and adequate insulation. Roofers with decades of Waterloo Region experience, such as Conestoga and AM Group, understand these details better than out-of-area crews.
Get a detailed written quote and warranty
Compare written quotes that itemize tear-off, underlayment, ice-and-water shield, ventilation, flashing and cleanup rather than a single lump sum. Confirm both the manufacturer material warranty and the contractor's workmanship warranty in writing; Cambridge firms commonly offer 10-to-15-year workmanship coverage, and several advertise transferable 50-year shingle products. Be wary of door-to-door pressure tactics and demands for large upfront cash deposits.
Check BBB standing and local reputation
The Better Business Bureau serves Canada, so you can verify a Cambridge roofer's accreditation and rating on bbb.org. Several strong local firms hold BBB A+ accredited ratings, including AM Group Exteriors, Conestoga Roofing, Classic Products, Thomson Roofing, Customer's Roofing and FS Roof Systems. Note that being merely listed is not the same as being accredited, and some capable firms are not accredited at all. Cross-check with HomeStars and Google reviews and ask for references from recent Cambridge jobs.
Frequently Asked Questions
For a typical Cambridge detached home, an asphalt-shingle roof replacement generally runs about $7,000 to $15,000 CAD, with most jobs landing in the $8,500 to $12,000 range depending on roof size, pitch and how many old layers must be torn off. Steeper or larger homes, premium architectural shingles and added ice-and-water shield or ventilation upgrades push the price higher. Metal roofing typically costs $15,000 to $30,000+ CAD, while flat-roof (EPDM/TPO) systems are priced by area. Always collect two or three itemized quotes.
Architectural asphalt shingles are by far the most common choice in Cambridge because they balance cost and durability through cold, snowy winters and warm, humid summers. For longevity, standing-seam or steel metal roofing sheds snow well and can last 40 to 50 years, which is why Cambridge specialists like Classic Products see steady demand. Flat commercial roofs and some home additions use EPDM or TPO membranes. Whatever the material, proper attic ventilation and eaves ice-and-water shield matter as much as the shingle itself in this freeze-thaw climate.
Ontario does not have a provincial roofing trade licence, so a roofer working in Cambridge is not required to hold a provincial roofing certification. What they must have is WSIB (Workplace Safety and Insurance Board) coverage for their workers and adequate liability insurance, and most structural roof replacements require a City of Cambridge building permit. This differs from provinces such as Quebec (which requires an RBQ licence), Alberta (a prepaid contractor licence for door-to-door sales) or British Columbia (municipal business licences), so in Ontario the burden is on the homeowner to verify insurance, WSIB and manufacturer credentials.
It depends on the scope of work. A straightforward re-shingle over a sound existing deck without structural changes usually does not require a permit, but if the job involves replacing or repairing the roof sheathing, altering the roof structure or changing the roofline, a building permit from the City of Cambridge Building Division is generally required. A reputable local contractor will confirm permit requirements for your specific project and obtain the permit on your behalf when one is needed.
In Cambridge's climate, a quality architectural asphalt shingle roof typically lasts about 20 to 30 years, while basic three-tab shingles may need replacing closer to 15 to 20 years. Repeated freeze-thaw cycles, ice damming and summer UV exposure all shorten lifespan, so longevity depends heavily on installation quality, attic ventilation and regular maintenance. Metal roofs can last 40 to 50 years or more. Annual inspections and prompt repair of damaged shingles or flashing help you reach the upper end of these ranges.
Ice dams form when heat escaping from the living space melts snow on the upper roof, and the meltwater refreezes at the colder eaves, backing water up under the shingles and into the home. They are a common winter problem in Cambridge, where snow can sit on roofs for weeks. The best defenses are continuous ice-and-water shield membrane along the eaves and valleys (now standard in proper local installations), adequate attic insulation to keep the roof deck cold, and balanced soffit-to-ridge ventilation. Experienced Cambridge roofers assess all three when quoting a replacement, and several also offer ice-dam and snow removal in winter.
Roofing in Cambridge
Cambridge sits at the meeting of the Grand and Speed Rivers in Waterloo Region, in southwestern Ontario. Its roofs face a full four-season workout: humid summers, autumn storms, and cold winters with repeated freeze-thaw cycles and ice damming. Snow loads are lighter than Ontario's snowbelt but still meaningful.
Asphalt shingles are the standard across Cambridge's mix of heritage Galt stone homes and newer subdivisions, with architectural shingles the popular choice. Metal roofing is a growing premium option, while flat commercial and industrial roofs use TPO, EPDM, and modified-bitumen systems. Proper attic ventilation and eaves protection are key to roof longevity here.
Ontario does not license roofing contractors province-wide, so homeowners should confirm WSIB coverage and liability insurance and ensure the contractor pulls a City of Cambridge building permit for structural re-roofing. Waterloo Region building departments enforce the Ontario Building Code.
A contractor familiar with Cambridge's older Galt and Preston housing stock and Grand River-valley weather will detail flashing, valleys, and ventilation correctly. The roofers listed here serve Cambridge and the wider Waterloo Region, with quotes in Canadian dollars.
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