01Flat, shingle, metal. Commercial and residential.
Roof Repair
- Roof leak repairs
- Emergency tarping
- Storm damage repair
- Shingle repairs & replacement
- Metal roofing
- Flat roof repairs (EPDM, TPO, Mod-Bit)
- Flashing repairs
- Drain issues
Leaside's 1920s to 1940s brick houses have been extended, re-roofed, and refinished many times over. We know where these buildings leak, from addition tie-ins and unused chimneys to foundations that are far older than the finished basements above them.


Four core services, each with bespoke local knowledge applied to Leaside's specific building types and conditions.
01Flat, shingle, metal. Commercial and residential.
02Below grade. Balcony. Terrace. Parking deck.
0324 hours a day. On site within 60 minutes across the GTA.
04Comprehensive reports a lender will accept.
01Flat, shingle, metal. Commercial and residential.
02Below grade. Balcony. Terrace. Parking deck.
0324 hours a day. On site within 60 minutes across the GTA.
04Comprehensive reports a lender will accept.
Active leaks anywhere in the GTA get same-day priority dispatch. We answer at 2am, including weekends and holidays.
Complete liability coverage on every job. All work is documented and you are protected from start to finish.
Inspection reports, repair documentation, and scope estimates in writing before we touch anything.
We've worked on tens of thousands of GTA buildings. We recognise failure patterns before they become emergencies.
We trace the actual failure mode before proposing a scope, and we quote what that scope requires rather than inventing urgency.
“Leaside owners renovate, and they expect the roof and basement work to match the standard of the rest of the house. We have worked on Toronto homes since 1999 from our North York base, and on a Leaside house we know to check the addition tie-ins, the chimneys nobody uses any more, and the original drainage before recommending anything.”
Active leaks anywhere in the GTA get same-day priority dispatch. We answer at 2am, including weekends and holidays.
Complete liability coverage on every job. All work is documented and you are protected from start to finish.
Inspection reports, repair documentation, and scope estimates in writing before we touch anything.
We've worked on tens of thousands of GTA buildings. We recognise failure patterns before they become emergencies.
We trace the actual failure mode before proposing a scope, and we quote what that scope requires rather than inventing urgency.
“Leaside owners renovate, and they expect the roof and basement work to match the standard of the rest of the house. We have worked on Toronto homes since 1999 from our North York base, and on a Leaside house we know to check the addition tie-ins, the chimneys nobody uses any more, and the original drainage before recommending anything.”
Rated 5 out of 5Blue Knight was, by far, the best. Responsive, ethical, totally professional — and their crew went above and beyond at no extra charge.
Rated 5 out of 5They installed a full new roof in one day. The crew worked around the house without us hardly knowing they were there.
Rated 5 out of 5I emailed at 4 a.m. and spoke with someone that same day. Estimate and completed work all within one day. Pricing was fair, work was excellent.
Blue Knight was, by far, the best. Responsive, ethical, totally professional — and their crew went above and beyond at no extra charge.
They installed a full new roof in one day. The crew worked around the house without us hardly knowing they were there.
I emailed at 4 a.m. and spoke with someone that same day. Estimate and completed work all within one day. Pricing was fair, work was excellent.
Luciano did not try to sell me a new roof. Appreciated the honesty — he showed up when he said he would.
We had a leak diagnosed by two other contractors who could not find the source. Blue Knight found it on the first visit and fixed it the same week.
Flat roof replacement on a commercial unit. Clean, fast, no surprises on the invoice. The crew left the site cleaner than they found it.
Called after a storm damaged our roof. Someone was on site within hours, tarped everything, and had us fully repaired before the next rain.
Had a slow basement leak for years. Every other company just caulked it. Blue Knight found the actual source and did a proper waterproofing job. No issues since.
Our neighbours recommended them for a valley repair. Small job, but they treated it like it mattered — showed up on time, matched the shingles perfectly, and charged exactly what they quoted.
From downtown Toronto to the 905 and beyond, one crew, one warranty, twenty-five years of GTA rooflines.
Service availability may vary. Call (647) 383-8664 to confirm coverage for your area.
From downtown Toronto to the 905 and beyond, one crew, one warranty, twenty-five years of GTA rooflines.
Service availability may vary. Call (647) 383-8664 to confirm coverage for your area.
We work across all areas of Leaside. If you don't see your neighbourhood listed, we almost certainly cover it.
We source appropriate materials for heritage rooflines and specify carefully when matching original systems is important to the homeowner.
Yes. Staging areas, bin placement, and the route debris takes off the roof are agreed before work starts, and gardens, hedges, and hard landscaping near the walls are covered. Side yards between Leaside houses are often tight, so we plan ladder positions to stay off the planting and clear of the neighbour's property.
Yes. Additions and dormers have turned many simple Leaside gables into roofs with several slopes, valleys, and wall junctions, and that is the kind of re-roof we do most often here. The new roof is detailed so every tie-in between the original house and the newer sections is flashed properly rather than sealed over.
Yes. Many Leaside basements were finished during a renovation while the original foundation and clay drainage beneath them were left alone, so we assess the whole system: cracks, parging, window wells, downspouts, and the drainage line. The fix might be crack injection, a sump pump, new drainage, or waterproofing inside or outside the wall, depending on what the assessment finds.
Yes. The Laird corridor has commercial and light industrial buildings with flat roofs, and we repair and replace flat roofing there as well as on the houses. Work on an occupied building is scheduled around the business, and the written report is laid out so an owner or property manager can budget against it.
Yes. Many Leaside chimneys have served nothing since the house was converted to gas, and an unused stack holds moisture, loses its mortar, and eventually leaks where it meets the roof. Depending on its condition we can repoint, recap, and reflash it, or take it down below the roof and close the opening, and we price both options in writing.
Yes, and pre-purchase inspections are a frequent request here, because a renovated Leaside house can carry three or four roof sections of different ages. We assess each one separately, report on the addition tie-ins and chimneys as items of their own, and deliver the written report within 24 hours of the visit.
Leaside's houses were built well: solid brick, sound masonry chimneys, and roof framing sized with a margin to spare. That quality is the reason so many of them have been kept and renovated rather than replaced, and it is also why the roof work they need now has to be done with the same care. A well-built 1930s house deserves counterflashing let into the masonry and step flashing woven into the courses, not a bead of caulking run along the brick.
We match materials to the house, protect the finishes and gardens around the work, and keep owners informed at each stage. Where original copper or slate details survive, we repair them in kind. Where a slope needs replacing, the written estimate explains why, what the deck is likely to need once the old layers are off, and how the new roof will tie into any additions.
Most Leaside jobs happen on houses that are lived in and often recently renovated, so the way the work is run matters as much as the work itself. We give a written estimate before anything starts and never quote by phone, because a price given without seeing the roof or the basement is only a guess. Staging, bin placement, and daily cleanup are agreed in advance, and interior finishes near the work are protected before anything is opened up.
When the job is done we walk through it with you, and you keep the written report with dated photos of what was found and what was replaced, including the flashing and membrane that end up hidden under the finished roof. If a question comes up months later, call us, and the report means we can answer it from the record rather than from memory.
A Leaside basement often looks like the newest part of the house. It was finished during a renovation with new drywall, flooring, and lighting, while the foundation wall behind it and the clay drainage tile at the footing stayed exactly as they were built in the 1930s or 1940s. When that original drainage silts up or collapses, water shows up in the most expensive room in the house, usually after a heavy rain.
We start by finding out how the water is getting in. On most Leaside streets it is surface water sent to the wall by downspouts, window wells, or settled grading, and correcting those can be enough on its own. Where the drainage has failed or the foundation has cracked, we propose crack injection, interior drainage with a sump pump, or exterior waterproofing, with the extent of any finish removal written into the proposal.
Leaside was planned as a town before the First World War and built out mostly between the 1920s and the 1940s. The result is street after street of solid brick detached and semi-detached houses on regular lots, with gabled roofs, masonry chimneys, and on some of them slate, copper, or other original details that are still in place. The construction was good, which is why so few of these houses have been knocked down. It is also now eighty to a hundred years old, and most of what keeps the water out has been replaced at least once.
What sets Leaside apart is how much of it has been renovated. Rear additions, second storeys, enlarged dormers, and finished basements have changed the shape of most houses on the street, and every change created a new joint between original construction and newer work. On the roof, those joints are where persistent leaks start. Below grade, a basement finished to a high standard often sits on original clay drainage and a foundation wall that was never built to keep a finished room dry.
We work across Leaside, from the residential streets between Bayview and Laird to the commercial and light industrial buildings along the Laird corridor, on everything from a single flashing repair to a full roof replacement or a basement waterproofing system. Each visit ends with written findings and dated photos, and you have a written estimate in hand before any work begins.
Leaside owners renovate, and they expect the roof and basement work to match the standard of the rest of the house. We have worked on Toronto homes since 1999 from our North York base, and on a Leaside house we know to check the addition tie-ins, the chimneys nobody uses any more, and the original drainage before recommending anything.
Leaside was planned as a town before the First World War and built out mostly between the 1920s and the 1940s. The result is street after street of solid brick detached and semi-detached houses on regular lots, with gabled roofs, masonry chimneys, and on some of them slate, copper, or other original details that are still in place. The construction was good, which is why so few of these houses have been knocked down. It is also now eighty to a hundred years old, and most of what keeps the water out has been replaced at least once.
What sets Leaside apart is how much of it has been renovated. Rear additions, second storeys, enlarged dormers, and finished basements have changed the shape of most houses on the street, and every change created a new joint between original construction and newer work. On the roof, those joints are where persistent leaks start. Below grade, a basement finished to a high standard often sits on original clay drainage and a foundation wall that was never built to keep a finished room dry.
We work across Leaside, from the residential streets between Bayview and Laird to the commercial and light industrial buildings along the Laird corridor, on everything from a single flashing repair to a full roof replacement or a basement waterproofing system. Each visit ends with written findings and dated photos, and you have a written estimate in hand before any work begins.
"Leaside owners renovate, and they expect the roof and basement work to match the standard of the rest of the house. We have worked on Toronto homes since 1999 from our North York base, and on a Leaside house we know to check the addition tie-ins, the chimneys nobody uses any more, and the original drainage before recommending anything."
Blue Knight, Leaside
We come to you, assess the roof, and give you a written quote. You are not obliged to proceed. Most estimates completed same week.