A lumbered slope framed over a flat roof deck to move water toward the drains, with a two-ply system installed over it.
Lumbered Slope Build and Two-Ply System, Toronto
Open Lumbered Slope Build and Two-Ply System, Toronto
Flat roofing in Vaughan, York Region
Vaughan Flat Roof Repair, Installation, and Replacement
We repair, replace and install flat roofs across Vaughan in York Region. Free no-obligation quotes, warrantied workmanship and 24/7 emergency response.
What you get from Flat Roofs Toronto
24/7 Emergency Response
Leaks do not wait for business hours.
Free No-Obligation Quotes
Scope, system and number, in writing, first.
Manufacturer & Workmanship Warranties
The materials and the installation are both covered.
Flat Roofs Only
Low-slope work is the whole business, not a sideline.
Flat Roofs in Vaughan, Up Close
Vaughan carries more low slope square footage than almost anywhere else in the region, and it arrives in every size. The industrial and warehouse districts hold single field roofs measured in acres. The Highway 7 corridor adds offices, plazas and mid rise mixed use with podium decks and screened mechanical. The Highway 400 corridor brings power centre and big box retail, again wide and open. Residential streets are sloped overhead, with flat sections limited to garage decks, porticos, sunrooms and modern custom builds. The common thread is age and exposure: much of the commercial stock dates from the 1990s and 2000s and is now due for a first replacement, not another patch.
What We Do on Vaughan Roofs
Across Vaughan we handle leak tracing and moisture scanning, curb and penetration reflashing, drain and scupper rebuilds, tapered insulation to correct ponding, phased tear off and re roofing of large commercial fields, small residential decks over garages and additions, and round the clock emergency flat roof repair.
Where Vaughan Sits in Our Service Area
The plan opens on this part of the GTA. Every city we cover in the region is in the legend beside it.
Select a region on the plan
Systems That Suit Vaughan
Big Vaughan industrial and retail fields go to TPO or PVC, mechanically fastened, with PVC anywhere exhaust grease reaches the membrane. Podium decks call for a protected membrane assembly beneath the pavers. Residential decks stay with SBS modified bitumen, two ply, or with EPDM. Compare every flat roofing system.
Two Ply
Modified Bitumen
Torch-applied or self-adhered SBS in two plies, with a granule-surfaced cap. The default on Toronto houses because it handles tight perimeters, curbs and wall terminations without a wide sheet.
- 15 to 20 year service life
- Redundant second ply
- Repairs patch cleanly
Torch Free
Cold-Ply
The same two-ply build assembled in cold adhesive rather than with an open flame. It is what we specify over occupied buildings, beside vinyl siding and anywhere a torch is not welcome.
- No open flame on the roof
- Low odour on occupied buildings
- Granule-surfaced cap
Single Ply
TPO and PVC
Hot-air welded thermoplastic sheet, laid in wide rolls with far fewer seams. It suits large commercial fields, and the reflective white surface keeps a warehouse roof cooler through a Toronto summer.
- Welded rather than glued seams
- Reflective white surface
- Fast over large areas
Rubber
EPDM
A synthetic rubber membrane that stays flexible through freeze thaw movement and takes ponding better than most. Common on garages, additions and small commercial decks.
- Flexible in cold weather
- Tolerates standing water
- Simple to detail and repair
Local Considerations in Vaughan
The conditions that decide how long a roof here lasts, and what we detail differently because of them.
- Wide industrial and big box roofs have very long unbroken perimeters, and wind uplift concentrates at edges and corners, so perimeter fastening and termination detail decide whether a roof survives a storm.
- Highway and truck route grit blows onto membrane surfaces and gets ground in by anyone servicing rooftop units, which is why walkway pads and defined service routes matter on Vaughan commercial roofs.
- Large commercial fields drain to interior drains only, so one blocked sump can hold thousands of litres on a deck designed with barely a quarter inch per foot of fall.
Recent Flat Roofing Projects
Real jobs photographed on site by the crews who did them.
Flat Roof Application Detail, Toronto
A detail from a flat roof membrane application, showing the finished surface of the system.
Attic Inspection and Blown-In Insulation, Toronto
Inspection of a flat roof attic space followed by blown-in insulation. The cavity is checked before any insulation is added.
Flat Roofing Advice
What we have written about keeping a low-slope roof watertight in this climate.
Commercial Flat Roofing in Vaughan: An Owner Guide
Commercial flat roofing Vaughan guide: 2026 costs, TPO, EPDM and modified bitumen options, drainage, permits and maintenance for York Region building owners.
Flat Roof Replacement in Vaughan: 2026 Cost Guide
Flat roof replacement in Vaughan costs $14 to $22 per square foot in 2026. Compare membrane systems, permits, insulation rules and real cost ranges.
Flat Roof Repair in Vaughan: Costs and Common Problems
Flat roof repair Vaughan guide: 2026 cost ranges, the most common low-slope leak causes, repair versus replacement signs, and what to ask before hiring.
Vaughan Flat Roofing Questions
Straight answers to what people ask us about a roof on this street.
Do you cover both houses and commercial buildings in Vaughan?
Yes, residential and commercial. That means a garage deck or a sunroom on a Vaughan residential street, and equally a warehouse, plaza or office field measured in tens of thousands of square feet. The systems and the staging differ, but the diagnosis is the same: find where water is actually entering, check whether the insulation is wet, then price a repair or a replacement honestly.
What does a commercial flat roof replacement cost in Vaughan?
Budget $8 to $15 per square foot for replacement. On a large Vaughan field the per foot number tends to sit lower because the work is repetitive, while cut up roofs with many curbs, parapets and penetrations push toward the top. Deck condition, insulation thickness and the amount of tapered work move the number most. Quotes are free.
How is standing water on a large roof fixed?
Clear and rebuild the drains first, since a blocked sump is the most common cause on a Vaughan commercial roof. If water still sits after 48 hours, the deck has deflected or the insulation has crushed, and the correction is tapered insulation installed during re roofing to rebuild fall toward the outlets. Adding a drain is occasionally the cheaper answer.
How long will a new commercial membrane last?
Single ply TPO and PVC are quoted at 20 to 30 year service life, while two ply modified bitumen sits at 15 to 20. What decides the real number on a Vaughan roof is maintenance: drains kept clear, walkway pads where mechanical gets serviced, and flashings checked each season. Manufacturer and workmanship warranties both apply.
Nearby Areas We Also Cover
Flat roofing in the streets either side of Vaughan:
Woodbridge • Concord • Maple • Thornhill • All of York Region
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Reviews From Across the GTA
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Get a Free Flat Roof Quote in Vaughan
Free, no-obligation quotes across Vaughan and the rest of York Region, and a 24/7 emergency line on (647) 333-3528.