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
Richmond Hill's 1990s and 2000s stone and brick homes are reaching their first full roofing cycle, and the original flashing work is usually what fails first.


Four core services, each with bespoke local knowledge applied to Richmond Hill'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.
“Richmond Hill's fast growth era produced a consistent set of installation defects rather than a consistent set of failures. Knowing the difference is what separates a $900 flashing repair from a $16,000 replacement quote, and we would rather write the first one.”
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.
“Richmond Hill's fast growth era produced a consistent set of installation defects rather than a consistent set of failures. Knowing the difference is what separates a $900 flashing repair from a $16,000 replacement quote, and we would rather write the first one.”
Rated 5 out of 5Our 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.
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.
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.
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.
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 Richmond Hill. If you don't see your neighbourhood listed, we almost certainly cover it.
Yes, from Langstaff and Doncrest along the Markham and Vaughan boundaries, north through Crosby, Westbrook, and Jefferson, to Oak Ridges and the streets around Lake Wilcox. The drive north takes longer, in winter especially, so the time we give you at booking is specific to your address.
Sometimes, yes. Properties on or near the Oak Ridges Moraine can draw conservation authority review where the work changes grading, on top of the permit Richmond Hill's building department on Yonge Street issues for structural roof work or foundation alterations, and a like with like reroof usually needs neither. That check happens before the quote is written, which keeps a review from surfacing partway through the job.
Yes. The retail and office stock through those corridors runs largely on flat membrane systems now reaching the end of their service life. These roofs fail at drains that have ponded long enough to soften the substrate and at lap seams that have lost adhesion, rather than in the open field, and they need membrane specific technique.
Because the housing here is unusually uniform, and on uniform housing pattern recognition is most of the job. We have been working in Richmond Hill since 1999, and after opening up enough of this era's wall intersections you learn what the original crews did in a hurry, often well enough to name the failure from the driveway.
Yes, on the condo buildings along the Yonge Street corridor and on houses with a concrete balcony or terrace above living space. The call usually starts with a ceiling stain in the room or unit below, or with rust marks and loose concrete at the balcony edge, both signs that water has been getting past the membrane for a while. We diagnose first, repair the concrete and the waterproofing together, and write up the findings with dated photographs, as our balcony repair and waterproofing service page describes in more detail.
They need more time rather than a different trade. The big houses in Bayview Hill carry some of the most involved rooflines in Richmond Hill, with multiple valleys, dormers, and long runs where the roof meets stone veneer, and each of those junctions has to be checked on its own instead of being judged from the field of the roof. That is why estate rooflines are quoted by scope, and why a full replacement on one sits above the typical range for the city.
Richmond Hill runs a long way north to south and changes underfoot as it goes. The south end around Langstaff, Doncrest, and North Richvale sits on the same slow draining ground as neighbouring Markham and Vaughan. Moving north through Crosby and Westbrook the housing gets newer and the lots larger. Jefferson and Oak Ridges sit on the moraine itself, where the soil is more permeable and groundwater behaves differently.
That matters more below grade than above it. Two houses of the same age and builder, one in Doncrest and one in Oak Ridges, will not have the same basement problem, and the systems that fix them are not interchangeable.
Nothing gets quoted before it is diagnosed. A roof means tracing the path from attic and roof surface until the failure is named; a foundation means locating the entry rather than the symptom.
Each diagnosis is written up with dated photographs, setting out what broke, what caused it, and the scope of a proper fix. On this housing stock that report frequently saves an owner five figures, because the honest answer is so often a defect at one intersection rather than a roof at the end of its life.
Richmond Hill grew fast through the 1990s and 2000s, and the housing that came out of it is recognisable: large detached homes with brick and stone veneer, ambitious rooflines carrying multiple valleys and dormers, and a great many intersections where one roof plane meets a wall. Those intersections are where these houses leak, and they leak because the original flashing was installed at production speed rather than badly designed.
That distinction matters commercially. A step flashing that was never properly woven into the veneer is a defect in the installation, not a failure of the roof, and it is usually repairable without touching the shingles. Owners are frequently quoted a full replacement for what is a day of flashing work at a single wall intersection.
The north end of the municipality sits on the Oak Ridges Moraine, which changes the below grade picture. Ground up there drains differently from the clay through the south end near Langstaff and Doncrest, and a basement problem in Oak Ridges frequently traces to groundwater moving through permeable soil rather than to pressure against a foundation wall.
Richmond Hill's fast growth era produced a consistent set of installation defects rather than a consistent set of failures. Knowing the difference is what separates a $900 flashing repair from a $16,000 replacement quote, and we would rather write the first one.
Richmond Hill grew fast through the 1990s and 2000s, and the housing that came out of it is recognisable: large detached homes with brick and stone veneer, ambitious rooflines carrying multiple valleys and dormers, and a great many intersections where one roof plane meets a wall. Those intersections are where these houses leak, and they leak because the original flashing was installed at production speed rather than badly designed.
That distinction matters commercially. A step flashing that was never properly woven into the veneer is a defect in the installation, not a failure of the roof, and it is usually repairable without touching the shingles. Owners are frequently quoted a full replacement for what is a day of flashing work at a single wall intersection.
The north end of the municipality sits on the Oak Ridges Moraine, which changes the below grade picture. Ground up there drains differently from the clay through the south end near Langstaff and Doncrest, and a basement problem in Oak Ridges frequently traces to groundwater moving through permeable soil rather than to pressure against a foundation wall.
"Richmond Hill's fast growth era produced a consistent set of installation defects rather than a consistent set of failures. Knowing the difference is what separates a $900 flashing repair from a $16,000 replacement quote, and we would rather write the first one."
Blue Knight, Richmond Hill
We come to you, assess the roof, and give you a written quote. You are not obliged to proceed. Most estimates completed same week.