Roof Repair in Downtown Toronto

Yes. We work on TPO, EPDM, modified bitumen, and built-up systems on commercial properties throughout downtown.

Yes. Heritage parapets with through-wall flashings and coping stones require careful material selection and workmanship. We have experience on historic downtown buildings.

We coordinate directly with building management. We provide notice protocols, loading dock requirements, and waste removal plans as part of our project planning.

Yes. Balcony membrane failures are one of our most common downtown calls, and the leak is usually at the slab-to-wall junction, the drain, or a railing post rather than through the open surface. Those details are repaired first, and where the slab shows spalling we sound it and fix the concrete before any coating goes on.

Yes. Each report carries dated photographs, the failure described by location and cause, the materials used, and any follow-up items, laid out so a property manager can file it and a condominium board can act on it without a separate explanation.

Because on a masonry building the water is travelling inside the wall, not down through the roof. Water that penetrates a parapet above a failed through-wall flashing enters the wall cavity and runs down until it finds a path out, which might be a floor slab bearing, a window head, or a service penetration well below. This is why chasing the stain is the wrong method on these buildings and why we survey the parapet, the coping joints, and the roof-to-wall termination as a system. It is also why a repair confined to the roof membrane frequently changes nothing.

It is a concealed membrane or metal layer built into the masonry beneath the coping, designed to catch water that gets into the wall and drain it back to the exterior through weeps. It matters because masonry is not waterproof and was never expected to be, the flashing is what manages the water that inevitably gets in. When it fails or is omitted during a coping reset, the wall has no way to shed that water and it goes downward instead. Reinstating it means taking the coping off and rebuilding the detail, which is more invasive than sealing the joints and is the only version that lasts.

Yes, and they need a different diagnostic approach. Downtown Toronto has a substantial and growing stock of vegetated assemblies, and a leak under one cannot be found by looking at the surface. Locating the breach means electronic leak detection or removing growing medium in a targeted area based on where the water is appearing below, which is why the survey work matters more than the repair. We also assess the drainage layer and root barrier, because a blocked drainage course under a green roof creates standing water across a wide area rather than a single leak.

Yes, and it is the normal condition downtown rather than the exception. What it requires is planning agreed in advance: hoisting or crane arrangements and the permits they need, loading dock scheduling, a defined route for materials and debris, working hours that respect the noise by-law and tenant operations, and notification to occupants for anything affecting access or producing odour. Torch-applied and adhesive systems in particular need the intake locations identified beforehand so fumes do not reach occupied space.

It can, and it is worth establishing early rather than discovering at permit stage. On a designated property, alterations affecting heritage attributes may require approval, and visible elements such as coping stones, cornices, and anything altering the roofline profile are the most likely to be scoped in. That does not usually prevent proper repair, it affects material selection, detailing, and timeline. We flag it during assessment and specify to match the original where the character of the building requires it.