Flat roof repair and installation across Scarborough
Scarborough Flat Roof Repair, Installation, and Replacement
Flat and low-slope roofing is the whole business here. Installation, replacement and repair across Scarborough, with 24/7 emergency response and a free written quote first.
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 Roofing Across Scarborough
Scarborough has more low slope roof area per block than almost anywhere else in Toronto, because of how it was built. The retail is arranged as strip plazas rather than main street storefronts, and every one of those plazas is a single large flat roof with rooftop units, kitchen exhaust and multiple tenants underneath. The 1960s and 1970s apartment blocks that line Kingston Road, Lawrence, Eglinton and Markham Road are the same story at a larger scale. On the residential side, the bungalows, back splits and side splits that fill the postwar subdivisions carry flat roofed carports, garages and rear additions. Closer to the Bluffs the exposure changes, with open wind off Lake Ontario loading roof perimeters that were installed with older edge details.
Why Flat Roofs Are Everywhere in Scarborough
- Scarborough retail is built as strip plazas, and a plaza is one continuous low slope roof serving every tenant beneath it.
- The borough has a large stock of mid century apartment blocks whose original low slope assemblies are long past their intended service life.
- Postwar bungalows and split level houses across Scarborough carry flat roofed carports, garages and rear additions that need periodic membrane replacement.
Residential and Commercial Flat Roofing in Scarborough
Two different kinds of roof, two different ways of working. Both are everyday work for these crews.
Residential
Homes and Additions in Scarborough
Scarborough houses generally have good access, room to stage material and simple roof geometry, which keeps residential work efficient. Most jobs are a flat carport, garage or rear addition roof: we tear off to the deck, replace soft sheathing, correct slope toward the drainage edge and rebuild the flashing where the flat roof meets the sloped main roof or a wall. Modified bitumen and EPDM are both common choices here. We also handle porch canopies, sunrooms and enclosed side entries.
Commercial
Commercial Buildings in Scarborough
Plaza and apartment roofs are the backbone of our commercial work in Scarborough. These are large membrane fields with many penetrations, rooftop units, kitchen exhaust and internal drains, and they usually need tapered insulation to fix long standing ponding. We install TPO, PVC, EPDM and modified bitumen, rebuild drains and sumps, and phase tear off so tenants and residents stay open and dry. Emergency flat roof repair is available 24/7 for leaks over occupied space.
Flat Roofing Services in Scarborough
Everything we do sits on a low-slope roof. Residential first, commercial second, and one number for an emergency at any hour.
Residential
Residential Flat Roofing
Rear additions, garages and row house decks. Tear-off to sound deck, new two-ply or single-ply membrane, and rebuilt flashing where the flat section meets the slope.
Replacement
Flat Roof Replacement
Core samples first, then a full tear-off, dry insulation, corrected slope and a new membrane, quoted in writing before anything comes off.
24/7
24/7 Emergency Flat Roof Repair
Active leaks, storm damage and open seams, answered around the clock. We stop the water first, then come back and fix the cause properly.
Daylight
Residential Flat Roof Skylights
Curb-mounted units framed into the deck, flashed by roofers and tied back into the membrane, plus replacements where the glazing has fogged.
Commercial
Commercial Flat Roof Installation
TPO, PVC, EPDM and modified bitumen on commercial and industrial low-slope roofs, phased so the building keeps operating.
Commercial
Commercial Flat Roof Skylights
Domes, barrel vaults and glass units, curbed and flashed by roofers, plus smoke vents and roof hatches surveyed in the same visit.
Residential
Attic Insulation and Ventilation
The cavity under the deck, to an R-50 to R-60 target where the depth allows it, with the venting strategy settled rather than left half of each.
Guide
Compare Every System
Six systems compared on lifespan, seams, fire behaviour, cost tier and the deck each one suits, so the quote you get is one you can read.
Flat Roof Systems We Install in Scarborough
We are not tied to one membrane. The system we quote for a roof in Scarborough is the one that suits the deck, the drainage and the way the building is used. Compare every system side by side.
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
Where We Work in Scarborough
The plan opens on Scarborough. Every borough and every GTA region we cover is on it.
Select a region on the plan
Areas we serve in Scarborough: Agincourt North, Agincourt South-Malvern West, Bendale South, Bendale-Glen Andrew, Birchcliffe-Cliffside, Centennial Scarborough, Clairlea-Birchmount, Cliffcrest, Dorset Park, East L'Amoreaux, Eglinton East, Golfdale-Cedarbrae-Woburn, Guildwood, Highland Creek, Ionview, Kennedy Park, L'Amoreaux West, Malvern East, Malvern West, Milliken, Morningside, Morningside Heights, Oakridge, Scarborough Village, Steeles, Tam O'Shanter-Sullivan, West Hill, West Rouge, Wexford/Maryvale, Woburn North.
Not listed? Call and ask. If we work the street next to yours we work yours.
What We Watch For on a Scarborough Flat Roof
The conditions that decide how long a roof here lasts, and what we detail differently because of them.
- Plaza roofs collect grease from restaurant exhaust and take constant service traffic from rooftop unit maintenance, both of which wear the membrane locally.
- Ponding is widespread on older Scarborough plaza and apartment decks that have deflected over time, and frozen ponds work seams apart every winter.
- Wind exposure near the Bluffs and along the lakeshore loads roof perimeters and edge metal, and older edge details lift first.
- Blocked internal drains on large plaza roofs put significant water weight on the deck and send it straight into tenant ceilings.
Recent Flat Roofing Projects
Real jobs photographed on site across Toronto and the GTA. Our projects are not tagged to a single area, so these are the most recent rather than the nearest.
Lumbered Slope Build and Two-Ply System, Toronto
A lumbered slope framed over a flat roof deck to move water toward the drains, with a two-ply system installed over it.
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 for Scarborough
Membranes, drainage, insulation and what this climate does to a low-slope roof.
Emergency Roof Repair in Scarborough: What to Do First
Emergency roof repair in Scarborough: what to do in the first hour, 2026 repair cost ranges, insurance guidance, and how to stop a leak before it spreads.
Flat Roof Replacement in Scarborough: 2026 Cost Guide
Flat roof replacement Scarborough costs in 2026: real price ranges by roof size, membrane options, permit rules, timelines and how to compare contractor quotes.
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.
Flat Roofing Questions From Scarborough
The questions we are asked most often on roofs in this part of the city.
Do you repair strip plaza roofs in Scarborough?
Yes. Plaza roofs are one of our main commercial jobs in Scarborough. We handle leak tracing across multiple tenant units, sectional repairs, drain and sump rebuilds, curb flashing around rooftop units and full tear off and replacement. Work is phased so tenants stay open, and we can prioritise the sections over units that are already taking water.
Can you replace an apartment building roof in Scarborough?
Yes. Scarborough has a large stock of mid century apartment buildings, and their low slope roofs are usually well past the original design life. We tear off, address wet insulation, install tapered insulation to remove ponding, rebuild drains and detail all the mechanical curbs and vents, using single ply or modified bitumen depending on the building and the budget.
What does a flat roof replacement cost in Scarborough?
Flat roof replacement typically runs about $8 to $15 per square foot, depending on the system chosen, the number of existing layers to remove, the condition of the deck and insulation, and the amount of drain and curb work required. Large plaza roofs price differently from a small carport. We give a free no obligation quote after inspecting the roof.
Do flat roofs near the Scarborough Bluffs need different detailing?
Roofs closer to the Bluffs and the Scarborough lakeshore see more sustained wind, and on a flat roof that load concentrates at the perimeter and corners. Edge metal that is loose or under fastened lifts first and takes membrane with it. On exposed roofs we tighten perimeter fastening patterns and make sure the edge metal is properly secured and sealed.
How quickly can you get to a flat roof leak in Scarborough?
We run 24/7 emergency flat roof repair across Scarborough. For active leaks in plazas, apartment buildings and homes, the first visit focuses on stopping the water: clearing blocked drains, sealing failed seams and flashing and covering open areas. We then assess the wider roof condition and quote the permanent repair or replacement separately.
Free, No Obligation
Request a Free Quote in Scarborough
Tell us what the roof is doing and we will come and look at it. No charge, and no obligation to proceed.
Call Us
Office Hours
Open 7 days a week: 7:00am to 11:30pm
Emergencies
The line above is answered 24/7 for anything that cannot wait, including weekends and statutory holidays.
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Free, No Obligation
Get a Free Flat Roof Quote in Scarborough
Call Flat Roofs Toronto at (647) 333-3528 for a free no obligation quote on your Scarborough flat roof.