01Flat, shingle, metal. Commercial and residential.
Roof Repair
- Roof leak repairs
- Emergency tarping
- Storm damage repair
- Shingle repairs & replacement
- Flat roof repairs (EPDM, TPO, Mod-Bit)
- Flashing repairs
- Drain issues
- Rooftop troubleshooting
Serving Don Mills
Roofing & Waterproofing in Don Mills
Don Mills was Canada's first planned community, and it was built with flat roofs at a time when almost nowhere else was. Seventy years on, that is a specialist job.
25+Years on GTA roofs
60 minEmergency response
Licensed& fully insured
TorontoRegion served
Our Services in Don Mills
What we do in Don Mills.
Four core services, each with bespoke local knowledge applied to Don Mills's specific building types and conditions.
01
02Below grade. Balcony. Terrace. Parking deck.
Basement Waterproofing
- Basement leaks
- Below-grade waterproofing
- Sump pump installation
- Balcony leaks
- Terrace leaks
- Underground parking waterproofing
- Crack injections
- Concrete slab leaks
0324 hours a day. On site within 60 minutes across the GTA.
Emergency Roof Repair
- Flooding response
- Storm & wind damage
- Fire-related roof & building repairs
- Insurance claim support
- Temporary protection & tarping
- Structural drying coordination
- Emergency rebuilds
04Comprehensive reports a lender will accept.
Roof Inspection
- Residential inspections
- Commercial roof assessments
- Industrial inspections
- Drone inspections
- Thermal imaging
- Moisture detection
- Forensic leak investigations
- Insurance reports
01Flat, shingle, metal. Commercial and residential.
Roof Repair
02Below grade. Balcony. Terrace. Parking deck.
Basement Waterproofing
0324 hours a day. On site within 60 minutes across the GTA.
Emergency Roof Repair
04Comprehensive reports a lender will accept.
Roof Inspection
Why Blue Knight
Why Don Mills property owners choose us.
01Emergency
60-Min Response
Active leaks anywhere in the GTA get same-day priority dispatch. We answer at 2am, including weekends and holidays.
02Coverage
Licensed & Insured
Complete liability coverage on every job. All work is documented and you are protected from start to finish.
03Transparency
Written Reports Every Time
Inspection reports, repair documentation, and scope estimates in writing before we touch anything.
04Experience
25+ Years on GTA Roofs
We've worked on tens of thousands of GTA buildings. We recognise failure patterns before they become emergencies.
05Diagnosis
Find the Cause First
We trace the actual failure mode before proposing a scope, and we quote what that scope requires rather than inventing urgency.
“Most residential roofers in Toronto are shingle crews, and a shingle crew on a Don Mills flat roof will produce something that sheds water for two years. This neighbourhood needs membrane technique, and that is a different trade with different training.”
01Emergency
60-Min Response
Active leaks anywhere in the GTA get same-day priority dispatch. We answer at 2am, including weekends and holidays.
02Coverage
Licensed & Insured
Complete liability coverage on every job. All work is documented and you are protected from start to finish.
03Transparency
Written Reports Every Time
Inspection reports, repair documentation, and scope estimates in writing before we touch anything.
04Experience
25+ Years on GTA Roofs
We've worked on tens of thousands of GTA buildings. We recognise failure patterns before they become emergencies.
05Diagnosis
Find the Cause First
We trace the actual failure mode before proposing a scope, and we quote what that scope requires rather than inventing urgency.
“Most residential roofers in Toronto are shingle crews, and a shingle crew on a Don Mills flat roof will produce something that sheds water for two years. This neighbourhood needs membrane technique, and that is a different trade with different training.”
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.
1 / 3
Rated 5 out of 5
Blue Knight was, by far, the best. Responsive, ethical, totally professional — and their crew went above and beyond at no extra charge.
Toronto, ON·Google
Rated 5 out of 5
They installed a full new roof in one day. The crew worked around the house without us hardly knowing they were there.
North York, ON·HomeStars
Rated 5 out of 5
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.
Toronto, ON·Google
Rated 5 out of 5
Luciano did not try to sell me a new roof. Appreciated the honesty — he showed up when he said he would.
Etobicoke, ON·Google
Rated 5 out of 5
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.
Scarborough, ON·Google
Rated 5 out of 5
Flat roof replacement on a commercial unit. Clean, fast, no surprises on the invoice. The crew left the site cleaner than they found it.
Mississauga, ON·GuildQuality
Rated 5 out of 5
Called after a storm damaged our roof. Someone was on site within hours, tarped everything, and had us fully repaired before the next rain.
Vaughan, ON·HomeStars
Rated 5 out of 5
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.
North York, ON·Google
Rated 5 out of 5
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.
Richmond Hill, ON·HomeStars
1 / 9
GTA Roofing Projects Since 1999
Featured Projects.
Where We Work
Rooftops across the GTA.
From downtown Toronto to the 905 and beyond, one crew, one warranty, twenty-five years of GTA rooflines.
Toronto
Greater Toronto Area
Extended Service Area
Service availability may vary. Call (647) 383-8664 to confirm coverage for your area.
Where We Work
Rooftops across the GTA.
From downtown Toronto to the 905 and beyond, one crew, one warranty, twenty-five years of GTA rooflines.
Toronto
Greater Toronto Area
Extended Service Area
Service availability may vary. Call (647) 383-8664 to confirm coverage for your area.
Areas Served
Neighbourhoods & areas we serve in Don Mills.
We work across all areas of Don Mills. If you don't see your neighbourhood listed, we almost certainly cover it.
Don Mills
Banbury
Graydon Hall
Parkway Forest
Flemingdon Park
Victoria Village
Henry Farm
FAQ
Don Mills roofing questions.
The whole area, from Banbury and Graydon Hall in the north down through the original Don Mills core to Flemingdon Park and Overlea, and east into Victoria Village. Our shop is a short run from all of it, so response times here are among the fastest anywhere we work.
Yes, through Toronto Building. Structural roof work and foundation alterations need a permit; a like for like membrane replacement generally does not. Some of the original Don Mills housing is now recognised for its architectural significance, and where that affects a proposed alteration we establish it before quoting rather than after.
It is a core part of the business rather than an add on. We run membrane crews on modified bitumen, EPDM, and TPO across commercial and institutional buildings throughout the GTA, and the same people work on Don Mills housing. That is the reason we are worth calling here specifically.
Don Mills and the surrounding North York flat roof stock have been part of our work throughout the twenty five years we have been operating. The housing is unusual enough that experience compounds quickly: once you have opened up enough of these assemblies you know which decade each replacement came from and what it will have underneath.
In Depth
A Neighbourhood Built Flat
The reason Don Mills needs a different contractor comes down to the assembly rather than the aesthetic. A conventional Toronto house sheds water down a slope and vents its attic through soffit and ridge. A Don Mills house frequently does neither. The roof is a membrane holding water out by continuity rather than by gradient, and the space below it is often a shallow cavity with no practical access.
That changes everything downstream. There is no attic to inspect from, so moisture has to be traced by other means. There is no slope to help a repair drain, so the detail has to be right rather than merely adequate. And there is no forgiveness in the system: a shingle roof with one bad course leaks a little, and a membrane with one bad seam leaks properly.
How We Work in Don Mills
Every visit starts with diagnosis rather than a quote form. On a membrane roof that means finding where water is entering the assembly rather than where it is appearing inside, and those can be a long way apart because water travels laterally under a membrane until it finds a penetration.
The written report names what failed, why, and what fixing it properly involves. On a building of this kind that frequently includes an honest statement about the remaining life of the whole system, because a patch on a membrane in its final years is money spent to defer a decision by one season.
Nearby Service Areas
Other areas we serve near Don Mills.
About Don Mills
What we know about buildings in Don Mills.
Don Mills was laid out in the early 1950s as Canada's first fully planned community, and the architecture was deliberate rather than incidental. Low modernist houses, generous setbacks, curved streets following the ravine system, and a great deal of flat and shallow pitched roofing at a moment when the rest of Toronto was building gable roofs over brick.
That decision still shapes every roofing conversation here. A Don Mills house frequently has no attic in the conventional sense, no ridge to vent, and a roof that is a membrane rather than a covering. Seventy years on, the original systems have been replaced once or twice, and the quality of those replacements varies enormously depending on whether the crew understood what they were working on.
The neighbourhood also holds mid-rise apartment stock and a significant amount of institutional and office building from the same era, most of it flat roofed and much of it now on membrane well past its warranted life.
Most residential roofers in Toronto are shingle crews, and a shingle crew on a Don Mills flat roof will produce something that sheds water for two years. This neighbourhood needs membrane technique, and that is a different trade with different training.
About Don Mills
What we know about buildings in Don Mills.
Don Mills was laid out in the early 1950s as Canada's first fully planned community, and the architecture was deliberate rather than incidental. Low modernist houses, generous setbacks, curved streets following the ravine system, and a great deal of flat and shallow pitched roofing at a moment when the rest of Toronto was building gable roofs over brick.
That decision still shapes every roofing conversation here. A Don Mills house frequently has no attic in the conventional sense, no ridge to vent, and a roof that is a membrane rather than a covering. Seventy years on, the original systems have been replaced once or twice, and the quality of those replacements varies enormously depending on whether the crew understood what they were working on.
The neighbourhood also holds mid-rise apartment stock and a significant amount of institutional and office building from the same era, most of it flat roofed and much of it now on membrane well past its warranted life.
"Most residential roofers in Toronto are shingle crews, and a shingle crew on a Don Mills flat roof will produce something that sheds water for two years. This neighbourhood needs membrane technique, and that is a different trade with different training."
Blue Knight, Don Mills
Ready to schedule your estimate?
We come to you, assess the roof, and give you a written quote. You are not obliged to proceed. Most estimates completed same week.