Flat roof repair and installation across North York
North York Flat Roof Repair, Installation, and Replacement
Low-slope work across North York, on houses and on commercial buildings. Free written quotes, manufacturer and workmanship warranties, and 24/7 emergency repair.
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 North York
North York covers a huge range of building types, and low slope roofs run through all of them. The 1950s and 1960s bungalows, side splits and back splits that fill Willowdale, Bathurst Manor and Downsview typically carry a flat roofed carport, breezeway or rear addition. Newer infill and custom rebuilds on those same lots often go the other way and put a fully flat modern roof over the whole house. Along Yonge, Sheppard, Finch, Wilson and Lawrence there are long runs of low rise commercial: plazas, medical and dental offices, banquet halls and auto shops, all on membrane roofs with rooftop units. Add the apartment slabs of Flemingdon Park and Don Mills and the industrial pockets around Downsview and Keele, and North York has more low slope roof area than most of the city.
Why Flat Roofs Are Everywhere in North York
- Postwar North York housing is full of flat roofed carports, breezeways and rear additions that are now on their second or third membrane.
- Infill and custom rebuilds across Willowdale and Bayview put modern full flat roofs on residential lots, which need proper drainage design from the start.
- The low rise commercial strips along Yonge, Sheppard, Finch and Wilson are built on low slope roofs carrying heavy rooftop mechanical loads.
Residential and Commercial Flat Roofing in North York
Two different kinds of roof, two different ways of working. Both are everyday work for these crews.
Residential
Homes and Additions in North York
On older North York homes we usually replace a flat carport, breezeway or addition roof and rebuild the flashing where it meets the sloped main roof or the house wall. On modern flat roofed infill homes the whole roof is low slope, often with a roof deck, parapets and internal drains, and those need a fully detailed membrane system with proper tapered insulation. In both cases we tear off to the deck, replace wet sheathing and correct the slope so water reaches the drain instead of sitting.
Commercial
Commercial Buildings in North York
North York commercial roofs are typically plazas, offices, banquet halls and light industrial buildings with a lot of rooftop equipment. We rebuild curbs and flashing around HVAC units, kitchen exhaust and vents, clear and rebuild drains and sumps, add tapered insulation to eliminate ponding, and install TPO, PVC, EPDM and modified bitumen systems. Work on occupied plazas is phased around business hours, and 24/7 emergency flat roof repair is available when a leak hits a tenant unit.
Flat Roofing Services in North York
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 North York
There is no single right membrane for North York. These four cover the work, and the quote explains which one we are recommending and why. 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 North York
The plan opens on North York. Every borough and every GTA region we cover is on it.
Select a region on the plan
Areas we serve in North York: Avondale, Banbury-Don Mills, Bathurst Manor, Bayview Village, Bayview Woods-Steeles, Bedford Park-Nortown, Black Creek, Bridle Path-Sunnybrook-York Mills, Clanton Park, Don Valley Village, Downsview, East Willowdale, Englemount-Lawrence, Fenside-Parkwoods, Flemingdon Park, Glenfield-Jane Heights, Henry Farm, Hillcrest Village, Humber Summit, Humbermede, Lansing-Westgate, Maple Leaf, Newtonbrook East, Newtonbrook West, Oakdale-Beverley Heights, Parkwoods-O'Connor Hills, Pelmo Park-Humberlea, Pleasant View, Rustic, St.Andrew-Windfields, Victoria Village, Westminster-Branson, Willowdale West, Yonge-Doris, York University Heights, Yorkdale-Glen Park.
Not listed? Call and ask. If we work the street next to yours we work yours.
What We Watch For on a North York Flat Roof
The conditions that decide how long a roof here lasts, and what we detail differently because of them.
- Rooftop mechanical units on North York plazas create dozens of penetrations and constant service foot traffic, and both are common leak sources.
- Restaurant and banquet hall exhaust deposits grease on the surrounding membrane, which shortens its life if it is not addressed at replacement.
- Ponding water sits on older, deflected plaza and apartment decks and freezes in place through the winter, working seams apart.
- Snow build up where a flat carport or addition meets a taller sloped roof leads to ice damming right at the transition flashing.
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 North York
Membranes, drainage, insulation and what this climate does to a low-slope roof.
Commercial Flat Roof Replacement in North York: 2026 Costs
Commercial flat roof replacement in North York: 2026 costs per square foot, membrane options, permits, timelines and how to compare contractor quotes.
Flat Roof Repair in North York: Costs and Common Problems
Flat roof repair north york costs for 2026, the most common low-slope roof failures on local homes, and how to tell when a repair beats full replacement.
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 North York
The questions we are asked most often on roofs in this part of the city.
Do you replace flat carport and breezeway roofs in North York?
Yes. Flat carports, breezeways and rear additions on postwar North York homes are one of the most common jobs we do. These roofs are small but they take the full snow load sliding off the main roof. We tear off to the deck, replace any soft sheathing, correct the slope toward the drainage edge and rebuild the flashing at the house wall.
Can you roof a modern flat roofed house in North York?
Yes. Full flat roof homes are increasingly common on North York infill lots, particularly in Willowdale and around Bayview. These roofs need parapet flashing, internal or scupper drainage, tapered insulation and a properly detailed membrane, and any roof deck area needs protection over the membrane. We install single ply and modified bitumen systems suited to that construction.
Do you work on plaza roofs along Yonge and Sheppard in North York?
Yes. Low rise commercial plazas along the main corridors of North York are standard commercial work for us. Those roofs carry heavy rooftop units, kitchen exhaust and multiple tenant demising conditions. We handle sectional repair, full replacement, drain rebuilds and curb flashing, and we schedule the work so tenants can keep trading.
Why does water pond on my North York flat roof?
Ponding on a North York flat roof usually comes from deck deflection between joists, drains that were set too high, crushed or compressed insulation, or a blocked drain and scupper. Standing water accelerates membrane breakdown and freezes into a load in winter. The fix is normally tapered insulation to build proper fall plus a drain rebuild, done as part of a replacement.
Do you offer emergency flat roof repair in North York?
We provide 24/7 emergency flat roof repair throughout North York for active leaks in homes and commercial buildings. The priority on the first visit is stopping water entry: clearing blocked drains, sealing open seams and flashing, and covering damaged areas. Once the leak is controlled we assess the roof properly and give you a free no obligation quote for the permanent fix.
Free, No Obligation
Request a Free Quote in North York
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.
Google Reviews
Reviews From North York
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Free, No Obligation
Get a Free Flat Roof Quote in North York
Call Flat Roofs Toronto at (647) 333-3528 for a free no obligation quote on your North York flat roof.