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 Concord, York Region
Concord Flat Roof Repair, Installation, and Replacement
We repair, replace and install flat roofs across Concord 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 Concord, Up Close
Concord is warehouse and industrial country, and the roofs match: single tenant distribution buildings, multi unit industrial condos and manufacturing plants carrying acres of low slope membrane in one continuous field. Much of that stock went up in the 1990s and early 2000s, which puts it squarely at first replacement rather than another patch. These roofs fail in predictable places. Rooftop units, curbs, exhaust fans and the pipe penetrations feeding them outnumber anything on a house, and every one of them is a seam. Add service traffic walking the same path to the same unit, plus ponding around interior drains that were never set quite low enough, and the field goes soft before the membrane itself does.
What We Do on Concord Roofs
Concord work is mostly commercial: moisture scanning to map wet insulation, leak tracing from inside the building, curb and penetration reflashing, drain bowl and sump repairs, walkway pad installation, section by section tear off and re roofing, plus emergency flat roof repair 24/7 when production cannot stop.
Where Concord 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 Concord
Large industrial fields belong on mechanically fastened TPO or PVC, with PVC preferred where kitchen or process exhaust drops grease and chemical fallout on the membrane. Two ply SBS still suits smaller office sections, and legacy tar and gravel comes off during tear off. 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 Concord
The conditions that decide how long a roof here lasts, and what we detail differently because of them.
- Truck traffic, highway salt and industrial grit settle on Concord roofs and grind into the membrane surface wherever crews walk, which is why walkway pads pay for themselves quickly.
- Single field roofs pond easily: a deck that has deflected slightly between joists holds water at midspan long after the drains have finished, and standing water finds the laps.
- Rooftop mechanical is serviced constantly here, and most membrane damage comes from dropped tools, dragged ladders and unsupported gas lines rather than from weather.
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.
Flat Roofing in Richmond Hill: Best Systems for 2026
A practical 2026 guide to flat roofing in Richmond Hill: best membrane systems, real installed costs, Ontario Building Code insulation and drainage rules.
Commercial Flat Roofing in Markham: 2026 Guide
Commercial flat roofing in Markham: 2026 costs, membrane systems, drainage and Ontario Building Code rules, permits and maintenance for GTA building owners.
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.
Concord Flat Roofing Questions
Straight answers to what people ask us about a roof on this street.
Do I need a full tear off, or can a new membrane go over the old roof in Concord?
It depends on what is under the membrane. If a scan and a cut test show the insulation is dry and the deck is sound, a recover can be an option on a Concord industrial roof. Once the insulation is saturated, a recover simply traps that water and voids most manufacturer warranties, so tearing off to deck is the honest answer. We core test before quoting.
Which membrane suits a large Concord warehouse roof?
For wide open industrial fields, mechanically fastened TPO or PVC is the usual choice: light coloured, weldable seams, and fast to install over big areas. PVC is worth the premium on a Concord building venting kitchen or process exhaust, because it stands up to grease and chemical fallout that will soften TPO. Two ply modified bitumen still works on smaller sections.
How fast can you respond to a leak over production space?
We run emergency flat roof repair 24/7, so an active leak over machinery or stored product in Concord gets a same day temporary seal to stop water entry. Permanent repair follows once the area is dry and we can open the assembly up to see how far the wet insulation has spread. Wherever possible we work around your operating hours.
Can roof work happen while our Concord facility stays open?
Yes. Industrial re roofing is normally staged so only one section is open at a time and each section is dried in before the crew leaves. Deliveries, hoisting and hot work get scheduled around shifts, and interior protection goes up under any area being torn off. Most Concord tenants keep running straight through the job.
Nearby Areas We Also Cover
Flat roofing in the streets either side of Concord:
Vaughan • Maple • Woodbridge • Thornhill • All of York Region
Google Reviews
Reviews From Across the GTA
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Free, No Obligation
Get a Free Flat Roof Quote in Concord
Free, no-obligation quotes across Concord and the rest of York Region, and a 24/7 emergency line on (647) 333-3528.