Flat and commercial roofing built to shed water, not just cover it
A flat roof lives or dies by its drainage. We design membrane systems for GTA commercial and mixed-use buildings with slope, seams and flashing considered as one whole, not a checklist.
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Flat roofing done properly, for buildings that can't afford surprises
Commercial and mixed-use buildings across Toronto and the wider GTA rely on flat and low-slope roofs that are far less forgiving than a pitched residential roof — a poorly sloped membrane will pond water, and ponding water finds every weakness eventually. We approach flat roofing as a drainage problem first and a membrane-installation problem second.
Membrane selection suited to the building
TPO, EPDM or modified bitumen, chosen based on the building's use, roof traffic, and how it needs to perform through both a humid Toronto summer and a hard winter freeze.
Slope and drainage designed, not assumed
We assess existing drainage paths and correct pooling issues rather than laying new membrane over a slope problem that will simply reappear.
Seam and flashing detail that lasts
The overwhelming majority of flat roof failures start at a seam or a penetration. We give those details the time they need rather than rushing to close out the job.
Minimal disruption for tenants and operations
We schedule and stage commercial work to keep disruption to tenants, staff or customers to a minimum, with clear communication on timelines.
Ponding water and aging membranes go unnoticed until they don't
Flat roofs rarely announce their problems the way a leaking shingle roof does. Water can pond quietly for years, membranes can degrade under UV and ice cycling, and by the time a ceiling stain appears inside, the deck below may already be compromised. Property managers and owners across the GTA often only learn about a flat roof's true condition during an emergency call.
We assess before we recommend, and document what we find
Our process starts with a genuine assessment of the existing membrane, drainage, and flashing condition — with photos and clear notes — so you understand exactly what's needed before any work begins. Where a full replacement isn't yet necessary, we say so, and offer a maintenance or partial-repair plan for consideration instead.
How we approach flat & commercial roofing
A clear, staged approach for commercial roofing work.
- 1
Site assessment
We inspect the membrane, flashing, drains and roof deck, and document the roof's overall condition.
- 2
Recommendation
You receive a written plan outlining what's needed now versus what can be monitored, with reasoning explained plainly.
- 3
Scheduling around your operations
We plan the work timeline to minimize disruption to tenants or business operations.
- 4
Installation
Membrane, drainage correction and flashing work completed to a considered standard, with ongoing site cleanliness.
- 5
Sign-off and documentation
You receive a record of the work completed, useful for insurance, resale, or future maintenance planning.
Why choose us for flat & commercial roofing
Commercial roofs carry higher stakes — tenants, inventory, and operations depend on them holding up.
Licensed & insured
Full coverage appropriate for commercial-scale roofing work.
Drainage-first thinking
We fix the water problem, not just the membrane on top of it.
Minimal downtime
Scheduling built around your building's operating hours.
Climate-appropriate materials
Membrane systems chosen to handle GTA summers and winters alike.
Documented work
Clear records for property managers, boards, and insurers.
Finish-level care
Even flat roofs get the same attention to detail as our residential work.
Frequently asked questions
Do you work on commercial buildings across the whole GTA?
Yes, we take on flat and commercial roofing projects throughout Toronto and the surrounding regions.
How do you handle ponding water on an existing flat roof?
We assess the drainage paths and correct the underlying slope issue where possible, rather than simply patching the membrane above the pond.
Can you work around tenants or ongoing business operations?
Yes, we plan staging and scheduling to minimize disruption and communicate timelines clearly in advance.
What membrane types do you install?
We work with TPO, EPDM and modified bitumen systems, selected based on the building and its usage.
How do I request an assessment?
Email us with the property address and any known issues, and we'll arrange a time to assess the roof.
Let's assess your flat or commercial roof
Email us details about the building and we'll set out a clear, documented plan.
Email Us for a Free EstimateWeather is hard on your roof — email us for a same-day inspection.
Summer roofing conditions in Toronto, ON
Summer heat and thunderstorms around Toronto, ON put roofs through intense UV, expansion, and sudden wind and hail. Heat accelerates shingle aging, so summer is prime time for inspections and repairs.
Proudly Serving Toronto, ON
Local, on-time service throughout Toronto and the surrounding area.