Free Consultation & Assessment
We walk the roof, check drainage and moisture, and photograph the problem areas
Ottawa Commercial Roofing Contractor
Flat and Low-Slope Roof Installation, Repair & Maintenance | BBB A+ Rated | $5M Liability Insured & WSIB Covered
Commercial Roof Systems Built for Ottawa Buildings
Commercial roofing in Ottawa has to handle heavy snow loads, months of freeze-thaw and meltwater that has nowhere to go on a flat roof. Vanity Roofing installs, repairs and maintains flat and low-slope roofs for offices, retail plazas, warehouses and multi-unit residential buildings across Ottawa and the Ottawa Valley. We work with property managers, facility managers and condo boards to keep tenants dry and the building open while the work gets done.
Every commercial job is covered by $5 million in liability insurance and full WSIB coverage. Book a free site assessment and we will give you a clear picture of what your roof needs and what it will cost.
Commercial Roofing Services We Provide in Ottawa
Every commercial roofing service we provide starts with a proper look at the roof membrane, seams, flashing, drains and insulation. From there we recommend whether a targeted repair, a maintenance plan or a full commercial roof replacement gives your building the best value.
Commercial Roof Installation and Replacement
We install and replace the low-slope roofing systems that hold up best in Ottawa’s climate.
- Modified bitumen: the system we install most on flat roofs. A multi-layer asphalt membrane reinforced with polyester or fibreglass that handles foot traffic and freeze-thaw well.
- TPO: a white single-ply membrane with heat-welded seams that reflects summer heat and helps cut cooling costs.
- EPDM: a flexible rubber membrane that stays pliable in deep cold and suits large, simple roof areas.
A commercial roof replacement covers tear-off, new insulation where it is needed, the new membrane, flashing around parapet walls, rooftop units and roof hatches, and new drain and scupper connections. We schedule around your tenants and business hours to keep disruption to a minimum.
Most commercial buildings in Ottawa have low-slope or flat roofs, so drainage is critical. Read why proper drainage for commercial flat roofs matters, or compare flat roofing systems before you decide. We also install and repair flat roofing for smaller buildings, garages and homes.
Commercial Roof Repair and Leak Detection
A leak over a storefront, office or warehouse floor costs you more than the repair itself. Our commercial roof repair work covers
- leaks at seams, roof drains, parapet walls and rooftop unit curbs
- punctures, blisters and splits in the membrane
- storm, wind and hail damage, with photo documentation for your insurance claim
- worn flashing and failed sealant on older roofs
- ponding water and blocked drains that overload the roof structure
Our 24/7 emergency roof repair team can tarp and stabilize an active leak so your business stays open, then come back and fix the source properly.
Commercial Roof Maintenance Plans
Regular maintenance is the cheapest way to get more years out of a commercial roof. We build a plan around your building and budget that can include
- spring and fall check-ups timed to Ottawa’s seasons
- clearing roof drains, scuppers and debris so water leaves the roof
- resealing seams, flashing and penetrations before they start to leak
- snow and ice monitoring through the winter, with roof snow removal when loads get heavy
- a written condition report you can use for capital and budget planning
Commercial Roof Inspections and Condition Reports
A commercial roof inspection tells you what you have, how long it has left and what to budget for. Our inspections cover
- membrane, seam and flashing condition
- moisture and leak detection
- drainage, ponding water and roof drain checks
- rooftop unit curbs, roof hatches and other penetrations
- photos and clear recommendations, ranked by priority
Vanity Roofing was featured in the Ottawa Business Journal on how facility managers should decide whether to repair, replace or wait on an aging commercial roof. See our roof inspection services for more on what a report includes.
How a Commercial Roofing Project Works
Customized Proposal
A written scope and price for repair, maintenance or replacement, matched to your budget
Material Selection
We recommend modified bitumen, TPO or EPDM based on your roof, how it is used and your budget
Project Planning
Scheduling around tenants, deliveries and business hours to minimize downtime
Project Execution
Tear-off, insulation, membrane and flashing installed by our own crews, with daily site clean-up
Clean-Up & Final Inspection
A full magnet sweep for loose nails and a final walk of the roof with you
Post-Project Support
Maintenance plans, warranty registration and 24/7 repairs whenever you need us
Why Ottawa Property Managers Choose Vanity Roofing
Since 2015 we have completed more than 18,000 roofing and exterior projects across Ottawa. Our commercial clients get the same crews, standards and clear communication on every job.
Proven Local Experience
More than 18,000 Ottawa roofing and exterior projects completed since 2015
Built for Ottawa Weather
Roof systems designed for Ottawa snow loads, freeze-thaw cycles and the Ontario Building Code
Certified Specialists
BBB A+ rated, CertainTeed SELECT ShingleMaster and James Hardie Elite Contractor
Commercial-Grade Materials
Modified bitumen, TPO and EPDM membranes from trusted manufacturers, installed to spec
Minimal Disruption
Work scheduled around tenants and business hours, with daily clean-up and a safe, tidy site
Clear Communication
Photo updates at every stage and a 20-year workmanship warranty on the roofs we install
When you choose Vanity Roofing, you get one local commercial roofing contractor for the whole job, from the first inspection to the final walk-through.
What Our Clients Say
Commercial Roofing FAQs for Ottawa Property Owners
What Types of Commercial Roofing Systems Are Best for Ottawa’s Climate?
Most commercial roofs in Ottawa are flat or low-slope, so the membrane has to handle standing snow, freeze-thaw and the occasional ponding water. Modified bitumen, TPO and EPDM all perform well here. Modified bitumen is tough and handles foot traffic, TPO reflects summer heat, and EPDM stays flexible in deep cold. We recommend the system that fits your building, how the roof is used and your budget.
How Long Does a Commercial Roof Installation Typically Take?
Most commercial roof replacements take 1 to 2 weeks, depending on the size of the roof, the number of rooftop units and the weather. We plan the work in sections so the building stays watertight and your business stays open.
Do You Offer Energy-Efficient Commercial Roofing?
Yes. White TPO membranes and reflective coatings bounce back summer heat, which can lower cooling costs on large flat roofs. Adding or upgrading insulation during a replacement also helps keep heat in through an Ottawa winter.
How Often Should a Commercial Roof Be Inspected?
We recommend inspecting a commercial roof twice a year, once in the spring and once in the fall, plus after any severe storm. Regular inspections also give you a written record of the roof’s condition for budgeting and insurance.
What Financing Options Are Available For Commercial Roofing Projects?
We offer flexible financing so you can spread out the cost of a larger commercial roofing project. We can also help you sort out which repairs need doing now and which can wait for next year’s budget.
Are You Insured and Licensed For Commercial Roofing in Ottawa?
Yes. Vanity Roofing carries $5 million in liability insurance and full WSIB coverage, and we can send proof of coverage to your property manager or board before work starts.
Get a Commercial Roofing Quote in Ottawa
Whether you manage one building or several, contact Vanity Roofing for a free site assessment and a straight answer on what your commercial roof needs. We walk the roof, show you photos and give you a written quote.
A Commercial Roofing Contractor Ottawa Businesses Trust
Vanity Roofing has built its reputation on proven results, long-term warranties, and referrals from satisfied customers across Ottawa. As the largest installer of CertainTeed® roofing products in Ottawa and a Select ShingleMaster™ in the top 1% nationwide, we’re able to register CertainTeed’s 5-Star Warranty, covering materials and labour for up to 50 years and workmanship for up to 25 years on qualifying shingle systems. That level of protection reflects the quality of our installations and the confidence we stand behind.
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Our commitment to excellence is further reinforced by an A+ rating with the Better Business Bureau and recognition as Best Roofing Contractor in Ottawa by ThreeBestRated every year since 2019. We’re also certified by the Vinyl Siding Institute and recognized as a James Hardie Elite Contractor, ensuring the same high standards across all exterior services. From roofing to siding, we communicate clearly at every stage of your project and deliver workmanship built to last, so you can feel confident your building is protected by one of Ottawa’s most trusted exterior contractors.
