Flat roof repair and installation for East York homes and buildings
East York Flat Roof Repair, Installation, and Replacement
Residential and commercial flat roofs across East York: tear-offs, re-roofs, membrane repairs and drainage corrections, quoted in writing with no obligation.
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 East York
East York is a compact borough of modest interwar and postwar housing, and its flat roofs are mostly additions rather than whole buildings. The 1920s to 1950s bungalows, one and a half storey houses and wartime semis south of Eglinton were built with sloped roofs, then extended over the decades with flat roofed rear kitchens, family rooms, sunrooms and garages. Leaside sits at the other end of the range, with larger homes carrying flat roofed rear additions and a light industrial and retail strip along Laird Drive. Thorncliffe Park adds a cluster of 1960s apartment slabs and institutional buildings with large low slope roofs and rooftop mechanical equipment. The common thread is a small flat area tied into a sloped roof, which is exactly where snow load, ice and flashing failures concentrate.
Why Flat Roofs Are Everywhere in East York
- Rear additions on East York bungalows and one and a half storey houses were almost all built flat, and many of those roofs are now decades past their original membrane.
- Detached and semi detached garages behind the older streets carry small flat roofs that get ignored until the garage ceiling fails.
- Thorncliffe Park apartment blocks and the Laird Drive commercial strip need full commercial low slope systems with proper drainage and mechanical curb detailing.
Residential and Commercial Flat Roofing in East York
Two different kinds of roof, two different ways of working. Both are everyday work for these crews.
Residential
Homes and Additions in East York
Most East York residential work is a flat rear addition of a few hundred square feet tied into a sloped main roof. We rebuild the transition flashing where the two meet, correct the slope toward the drainage edge where the deck has sagged, and replace wet sheathing before the new membrane goes down. Modified bitumen suits these small roofs well. We also reroof garages, sunrooms and porch canopies, and we detail around skylights that were cut into additions later.
Commercial
Commercial Buildings in East York
Commercial low slope work in East York centres on Laird Drive, Overlea Boulevard and the Thorncliffe Park apartment and institutional stock. These roofs are large, carry rooftop units and vents, and often have twenty or more penetrations that all need proper curbs and flashing. We handle tear off and replacement in phases so tenants keep operating, rebuild ponding areas with tapered insulation, and offer 24/7 emergency flat roof repair for buildings where a leak affects occupied units below.
Flat Roofing Services in East 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 East York
Four systems cover almost every flat roof in East York. Which one belongs on yours depends on the size of the deck, the perimeter detailing and how water leaves it. 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 East York
The plan opens on East York. Every borough and every GTA region we cover is on it.
Select a region on the plan
Areas we serve in East York: Broadview North, Danforth-East York, Leaside-Bennington, O'Connor-Parkview, Old East York, Taylor-Massey, Thorncliffe Park, Woodbine-Lumsden.
Not listed? Call and ask. If we work the street next to yours we work yours.
What We Watch For on an East York Flat Roof
The conditions that decide how long a roof here lasts, and what we detail differently because of them.
- Snow sliding off the main sloped roof onto a small flat addition creates a deep drift and an ice dam right at the transition flashing.
- Mature trees along the older East York streets drop leaves and seed into scuppers and drains, and a flat addition roof ponds within one storm of a blockage.
- Freeze thaw cycling opens seams and flashing laps on older modified bitumen, and East York has a lot of membrane that is well past its service life.
- Ravine edges near the Don Valley bring extra debris and wind exposure on roofs backing onto the slope.
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 East York
Membranes, drainage, insulation and what this climate does to a low-slope roof.
Flat Roof Repair in East York: 2026 Guide
Flat roof repair in East York: 2026 costs, common membrane failures, repair versus replacement advice, permit rules, and how to choose the right roofer.
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.
Flat Roofing Questions From East York
The questions we are asked most often on roofs in this part of the city.
Do you work on flat rear additions on East York houses?
Yes, that is the most common residential job we do in East York. Rear kitchens, family rooms and sunrooms added to bungalows and one and a half storey houses were built with flat roofs, and after a few decades the membrane and the transition flashing both need replacing. We tear off to the deck so we can see and correct the slope and any rotted sheathing.
What flat roof system suits an East York bungalow addition?
For a small flat addition on an East York bungalow, two ply modified bitumen is usually the practical choice. It handles foot traffic, details well around the wall transition where the addition meets the main roof, and copes with snow load. EPDM is a good alternative on larger, simpler rectangles with few penetrations. We recommend based on the actual roof rather than a default.
Do you repair apartment building roofs in East York?
Yes. East York has a significant stock of mid century apartment buildings, particularly around Thorncliffe Park, and we handle both repairs and full low slope replacement on them. That work includes drain and scupper rebuilds, tapered insulation to remove ponding, curb and flashing detailing around rooftop mechanical units, and phased scheduling so residents are disrupted as little as possible.
How fast can you respond to a flat roof leak in East York?
We provide 24/7 emergency flat roof repair across East York. For an active leak the first visit is about stopping water entry and protecting the interior, which usually means clearing a blocked drain, sealing the failed seam or flashing and covering the area. Once the roof is stable we assess the full condition and quote the permanent repair or replacement.
Is a flat roof in East York worth replacing or just patching?
It depends on how much of the membrane is failing. If leaks are isolated to one seam or one flashing detail and the rest of the field is sound, a repair is reasonable. If the surface is blistered, seams are opening in several places or the insulation below is wet, patching only buys a season. A properly installed flat roof should give roughly a 20 to 30 year service life.
Free, No Obligation
Request a Free Quote in East 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 East York
These come straight from our Google Business Profile. We cannot edit them, reorder them or take one down, and the rating in the header is whatever Google is showing today.
Free, No Obligation
Get a Free Flat Roof Quote in East York
Call Flat Roofs Toronto at (647) 333-3528 for a free no obligation quote on your East York flat roof.